om d e570 preamp-om1

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Operator

s ManualPlease, first read this manual carefully!

Full Tube Guitar Preampwith MIDI-Control

TUBE PREAMP 570


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2

Tube

AmpTechnology

Tube

AmpTechnology


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Table of Contentspage

IntroductionFeatures and Functionality at a GlanceContentsFront Panel Features:

Rear Panel Features:

Practical Info and Tips

Glossary,Troubleshooting

Technical Data,Tube Map, Tube Exchange ServiceWiring of Principal ConnectorsRemote Control OptionsFront Panel Diagrams for Noting Settings

Note:

:

Handling and Care

Preamp Defeat; Clean and Crunch Channel Control Features

Input; Lead I and Lead II Channel Control FeaturesNoise GateWrite/CopyPower

Mains, Mains Fuse, Ground Lift Switch

Detailed Specifications and Ratings

You'll find an ancillary pamphlet accompanying this owner's manual entitled

Instructions for the Prevention of Fire, Electrical Shock and Injury.Be sure to read it before you plug in and power up the amp!

Technical specifications are subject to change without notice.

Modern/Classic, Mega Lo Punch,Stereo FX Loop

Noise Gate: Mute Depth, Threshold Level

Stereo Output: Right & Left, LevelStereo FX Loop: Send, Return Right & LeftAuxiliary InputMIDI Section and Footswitch Ports

Balanced Line Out: Level, Overload LED, Line Out Status,XLR Ground, Line Output Frequency Compensated

CAUTION! Please read and heed the following:

Status-LED: Indications

Front and Rear Panel Diagrams

445

6910131415

151616

1717181821242526

282930313233

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Congratulations! Preamp E570 mostadvanced versatileGuitarpreamps

sophisticatedguitarpreamp all-tubetechnologystate-of-the-art

microchipcircuitry avastrangeof great fundamental tones

controlledremotelyviaMIDI switchableNoiseGate

frequency-compensated stereo out 4x12" speaker cabinetemulation

ease of use remarkably intuitive

handlingexcellent sound-shaping options greatest flexibility

a gigging workhorsestudio home recordingfinely-tweaked, MIDI controllable sound-shaping functions

wealth of disparate soundsfour basic sounds , , and

ultra-advanced tone-generating machineplaying pleasure value to boot

Four basic channels

Preamp Defeat Function:

Modern and Classic sound-shaping buttons

Two Gain variants

Two voicing sections

Various sound-shaping buttons

With the , you now own one of theand availabletoday!

This marriesthe unrivalled tone of to theawesomesound-shapingmightof control featurespoweredby

. Thiselegant combination putsat your fingertipsand an all but inexhaustible reservoir of compelling

variationsallof whichmaybe .What'smore,thepreampboastsahost of hip& practical features:To mention just a few,youget afor theCrunch,LeadIandLeadIIoverdrivechannels.Inaddition,theamp

sports a featuring.Youcansendabalancedsignal toamixingconsoleviatheXLRports,oran

unbalancedsignaltoarecordingdeviceviathestereojack.

1. a logical control feature array, utmost and

;2. and courtesy of the manyvoicing options and special features, and 128 MIDI presets offering a bevy ofprogramming options;

3. that also sports a speaker simulation system, making ita handy tool for and ;

4. a combination ofproviding instant access to a ;

5. the ; with two variable andswitchable Gain levels and two voicing options ( and )for each basic sound, you actually have 16 fundamental sounds to choose from;

6. an that will give you years of and .

-> : , , and with separate Gain,Treble and Volume knobs.

-> This bypass circuit lets you combine the 570 preampwith further preamps or multi-effect processors to extend the range of your19" rack system's sound-shaping options.

-> : Determine the basic voicing of all four channels, giving you a broader, deeper tonal spectrum to work with.

-> for each of the basic channels: andlet you activate directly two different gain settings for every channel.

> : one EQ for and (Main Channel 1),and another for and (Main Channel 2).As a special feature, every channel sports a dedicated Treble knob.

-> tuned to match the tonal requirements of

the given channels: and for and ,and for the two Lead channels.

This affords you:

Features and Functionality at a Glance

Clean Crunch Lead I Lead II

Modern Classic

Clean Crunch Lead I Lead II

Gain Boost Hi Gain

Clean CrunchLead I Lead II

Bright Ultra Bright Clean CrunchContour Mid Edge

-

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-> Use this circuit to insert stereo effect devicesinto the signal chain.Programmable stereo effect loop:

->The preamp can also be muted via MIDI controller 7.

-> Use this circuit to insert stereo effect devicesinto the signal chain.

->A stereo jack offers ansignal for recording to tape deck or PC.-> for routing

the preamp signals to mixers or recording gear.-> serve to integrate the preamp into a MIDI system.-> , accessible via 16 MIDI channels.->The Preamp E570

The Serial Amp Control Port accepts the Custom Z-9 Footswitch (optional); use itas a conventional switcher to select channels and two sound-shaping functionsdirectly. Then there's the MIDI In, which accepts the Z-9 for use as a simple MIDIfootcontroller or any other MIDI footcontroller. Finally, the preamp is equippedwith a stereo jack that takes a dual footswitch, allowing you to switch the fourchannels remotely.

-> for suppressing noise in the ,and channels.

Amongthehallmarksof thisfinepreamp arepainstakingworkmanship and finishingas well as rigorously tested and carefully selected quality components. You'll findguidelinesoncareandmaintenanceof tubeampsonpage24.UndertheheadingTips

fromthe designer, you'll come acrosspractical tipson the aforementioned featuresthroughout the manual. All critical information concerning the operation of thispreamp is preceded by "NOTE", "CAUTION", "Read and heed" or some other eye-catchingcomment.We'recallingyourattentionto theseremarksfor reasonsof safetyorothercompellingmotives,sopleasegivethemdueconsideration.

Everyoneat ENGL isconfident that theand aresureto delight you:

Thoughthispreamp isrelativelyeasytohandleandyou'reprobablyraring to give it ago, Irecommend that you read the owner'smanual thoroughlybefore youpower itup.

1. ENGL E570 Tube Preamp;2. mains cord;3. this manual;4. a pamphlet entitled

.

Stereo Effects Loop:

unbalanced, frequency-compensated line out

Balanced, frequency-compensated XLR line stereo outputs

and ports128 MIDI presets

offers three different remote interface ports:

Programmable Noise Gate

E570tubepreamp'sextraordinaryversatilityoutstandingfeatures Simplyplugin,playandbeinspired

bythetubetoneofyourENGL570preamp!

Afewwordsofwisdomfromthedesigner:

MIDI In Thru

Crunch Lead ILead II

Instructions for the Prevention of Fire,Electrical Shock and Injury

Contents:

Master knob:Overall output level control.aster knob:Overall output level control.

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Front Panel FeaturesAt thebackof themanual,you'll find fold-out diagramsof the front and rear panels.As you're reading the descriptions of the preamp's features, you'll gain a betterunderstandingof thetopicofdiscussionifyouunfoldandrefertothemaswego!

Thisoption comes in handy when you want to insert another preamp or an effectprocessor into aserial loopalongwith theENGLPreamp570.If theotherpreampcanalso be bypassed, you can switch between the two preampson the fly or even runthembothat thesametime.If youwanttoconnectasecondpreamp,insert it intothestereo effectsloop andset thePreamp Defeat statusandFXLoopstatusactivewhenyouwant activate thesecondpreamp.You couldevendaisychainseveralpreampsoreffectprocessors.

Clean channel Gain control. This knob determines the preamp's input sensitivity inCleanmode;useit tosetthedesiredinput level.

The amount of distortion depends on your guitar'spickups and the Gain Boost (3)setting.InCleanmode,single-coilpickupsmaybeginsaturatingthepreampwhentheknob is set to about the two o'clock position;pickups with very high output levels

(humbuckersoractivepickups)willevokemildoverdriveatevenlowersettings.If youwantsqueakycleantone,simplybackoff theGainknobaccordingly.

Booststhe input sensitivityof Main Channel 1, and .The red LEDabovethisbutton lightsup to indicate ison. can also beswitched viaMIDIprogramchangecommandortheCustomZ-9Footswitch.

Asitsnamewould imply, servesprimarilytoup Cleanand Crunch channel

input levels, extend both channels' gain ranges. In effect, thisfeaturegivesyou twoadditional variationson these two channels'basicsounds.For example,youcould settheCleanchannelGainknobto thehighest settingatwhichyourguitarsignalremainsdistortion-free, just under the preamp clipping threshold. Then when you activate

,youwill overdrive theClean preamp slightly, yielding a grittier tonewell-suitedforrockriffs.AnotherCleanchanneloption istousethe asavolumebooster.Todo this,activate anddial inaCleanGainknobsetting,makingsurenot topushthepreamp intoclippingzone.Considerthisyourhigh-volumecleantone,sayfor cluckinglead lines. Switching off gives you a softer clean tone for chord work.

Switchbackandforthbetweenthetwoasdesired.

A tip from the designer:

Atipfromthedesigner:


Clean CrunchGain Boost Gain Boost

GainBoost

GainBoost

GainBoostGainBoost

Gain Boost

1 PREAMP DEFEAT

2CLEANGAIN

3GAINBOOST

Thisisabypassthatcutsthepreampoutof thesignalchainwhenyoupressthebutton.In thiscase,the input signal isrouteddirectlyto theSendjack.TheLEDlocatedabovethebuttonilluminatesto indicatethepreampisbypassed.

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4CRUNCHGAIN

5BASS

6MIDDLE

7TREBLECLEAN

8TREBLECRUNCH

Gain control for theCrunch channel. Thisknob determinesinput sensitivityinCrunchmode;useittodial inthedesiredamountofpreampdistortion.

Extremely high gain and volume levels in Crunch mode can producepowerful feedback.Avoidfeedbacksqueals;theycanleadtohearinglossanddamagespeakers! At higher volumes, back off the Gain and Treble levelsin order to prevent

uncheckedfeedback!

Single-coil pickups will evoke mildly overdriven sounds at settings somewherebetween10and3o'clock.Trysettingsbetween9and1o'clock for pickupswithhigh-output humbuckersor activepickups.Bear inmind theGainBoost function.You canactivateit viaanENGLCustomZ-9FootswitchorapreprogrammedMIDIpresettogetanevenbigger,beefiercrunchtoneonthefly.

This is the preamp voicing section's passive low-frequency EQ for Main Channel I'sCleanandCrunchmodes.

This is the preamp voicing section's passive midrange frequency EQ for MainChannel I's Clean and Crunch modes.

This is the preamp voicing section'spassive high-frequency EQ for Main Channel I'sCleanmode.

This is the preamp voicing section'spassive high-frequency EQ for Main Channel I'sCrunchmode.

Tohelpyougetacquaintedwiththepreamp'sfundamentalsounds,Irecommendthatyouset all tonecontrolsto orslightlyhigher thanthecenteror12o'clockposition.Forhigher-gainCrunch sounds, your best bet isto turn the Treble Crunch knob down toprevent thepickupsand speakersfromgenerating feedback (asetting in the10-to -1

o'clockrangeisrecommended).TheCleanand Crunchchannelsareequipped withdedicatedTrebleknobsso youcantweak the topend of each of the two channelsseparatelyto suit your tasteand thegiven sonic scenario. You will find that grittier tonesgenerally sound better with atouch less treble because preamp saturation makeshigher frequencies figure moreprominentlyin the signal.Bear inmind that youalso have the two Normal Bright (9)andUltraBright (10)buttonsat yourdisposal for shapingthehighfrequencyrange. Isuggest you get into thehabit of dialing in lower Treble settings. That way, you canprogramvarious MIDI presets with one or both Bright options, remotely and haveplentyof tonalvariationsatyourfingertips.

CAUTION:



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9NORMALBRIGHT

10ULTRABRIGHT

11CLEANVOLUME

12CLEAN

This feature boosts the upper end of the high frequency range in Main Channel 1,and . ItseffectivenessdecreasesasGain settingsincrease. The red LED

above thisbutton lightsup to indicate the Normal Bright function ison. ThisfeaturecanalsobeswitchedviaMIDIprogramchangeorCustomZ-9Footswitch.

Foracrisp orglassytone,activatethe .Thissettingbrightensthesoundof humbucking or muddy pickups. Don't let the namesconfuse you:actuallyaddressesa higher frequencyrangethan .Notealso that theGainknob influencesthissound-shaping function'sintensity.Furthermore,itstonal impactvaries slightly in Modern and Classic modes, particularly when you are driving thepreampintotheclippingzone.

LocatedintheCleanandCrunchpreampstageof MainChannel1,thissound-shapingfunctionboostsslightly lower high frequencies.Unlike (9), itsintensityremainsthe same irrespective of the Gain knob setting. The LED above the buttonlightsupto indicatetheUltraBright functionison.It canalsobeactivatedremotelyviaMIDIprogramchangeorCustomZ-9Footswitch.

Thisvoicingoptionupsthetwangfactorinherentincertaintypesofguitars,andletsyouputasetof soniccowhornsonthosethat lackit.Feelfreetocontrolthissound-shapingfunctionremotelyviaMIDI.Butwhicheverwayyouchoosetouseit,Irecommendthatyoudon'toverstatetop-endfrequencies.Backoff thetwoTrebleknobstoavoidharsh,cuttingorover-the-topbrightness.InClassicmode,high-frequencypeaksaredampened

anywaywhenthepreampstartsclipping.InModernmode,thetonecanbecomeverygrittyand raw,particularlywhenBright functionsareactivated.That'snot necessarilybad;forsomesounds,thiseffectcanbequitecompelling.Isuggestyouliterallyplayitbyearexperiment freelyandyouaresuretodiscovermanyinterestingand inspiring top-drawertones.BesuretogivetheModern/Classicsound-shapingfunctionsagoodworkout.Isuspectyou'llbedelightedbythearrayof tones,particularlyasyouadddifferentguitarsandpickupstothemix.

Determines the Clean channel's level. Use this knob to adjust the Clean channel'svolumeanddial in thedesired balance incomparisonwith the other channels' levels.Because thisknob islocated preeffect loop,it also determinestheeffect send level inClean mode. The green LED to the right of the knob lightsup to indicate the Cleanchannelison.

Pushthisbuttontoactivatethepreamp'sCleanchanneldirectly(inreciprocationwith, , , and ).ThegreenLEDto theright of theClean

Volumeknob (11) lightsupto indicate theClean channel isactive.TheClean channel

mayalsobeactivatedviaMIDIprogramchange,theENGLCustomZ-9Footswitch,oradualfootswitch.

Clean Crunch

NormalBright Normal BrightUltraBright

NormalBright

Crunch Lead I Lead II Preamp Defeat



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13CRUNCHVOLUME

14CRUNCH

15MODERN/CLASSIC

16M.L.P.:MEGALOPUNCH

Determines the Crunch channel's level. Use thisknob to adjust the Crunch channel'svolume and dial in the desired balance with the other channels' levels. Because thisknob ispre effect loop, it also determinesthe effect send level in Crunch mode. TheyellowLEDtotherightof theknoblightsuptoindicatetheCrunchchannelison.

Press thisbutton to activate the preamp'sCrunch channel directly. (in reciprocationwith , , , ), TheyellowLEDto the rightof theCrunchVolume knob (13) lights up to indicate the Crunch channel is active. The Crunchchannel may also be activated via MIDI program change, the ENGL Custom Z-9Footswitchoradualfootswitch.

Thissound-shapingfeaturevoicesthebasictonal characterof thefourClean,Crunch,Lead IandLead IIchannels,thechoicesbeingamorecontemporarysoundorvintage-approved tone. The LED above the button lights up to indicate isactivated.

and can also be activated via MIDI program change or the ENGLCustomZ-9Footswitch.

When set to , the preamp's response is a touch less dynamic, with fewermidrange frequencies in the mix. This voicing is particularly prominent when thepreamp stage ( , ) is overdriven, making the right choice forheavier styles. Classicmode isthe wayto go for vintage tube tone. If you want yourlead lines to pack a mightier punch, I recommend that you activate in

Lead/Modern mode,or generallyopt for Classicmode.When inClassicmodeandathigher Gain settings,deactivate for a more focused, tighter low end.ThoughthedifferenceinthetwovoicingsismoresubtleintheCleanchannel,youwillnotice that elicitsa more dynamic response;thisisattributable to the ECC83triode stage. The result is a slightly smoother, less edgy tone. Here's a hip

configurationforyou:Setupyourrigso that thepreampisrightat thecusp of clipping that is, the point where the clean signal begins to break up andtransition to a dirtier tone and turn up the Treble knob. In Classic mode, higherfrequencies are dampened - an effect known as soft clipping yielding a more

homogenous, balanced tone. You can achieve thiskind of tone bydialing in higherGain knobsettingsfor the Clean channel knobsor activating . The Crunchchannel also puts out mild, rock-approved grind:Activate and dial in lowergainlevelsbysetting somewhereinthe9-1o'clockrange.

Whenactivated,thisfunctionboostslow-end frequenciesin all fourpreampchannels.The red LED above the button lightsup to indicate thisfunction ison. It mayalso beactivatedremotelyviaMIDIprogramchangeorCustomZ-9Footswitch.

effects vary, particularly in Lead channel Modern and Classicoperating modes. When is on, it boosts the bottom-end meaning that itaudiblyincreasessound pressure.WhenClassicmode isactivated, theeffect depends

Clean LeadI LeadII PreampDefeat

ClassicModern Classic

Modern

Crunch Lead Modern

Contour

MegaLo Punch

Classic

Classic/Modern

Gain BoostCrunch

CrunchGain

Mega Lo Punch'sModern



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on theGainknob setting and isnot nearlyaspronounced.At veryhigh Gainsettingsanddependingonthetypeof pickup,thesignal'slowendmaybecomerathermuddy.When you configure the amp in Classicmode and dial in a high gain level, I stronglysuggestyoudeactivateMegaLoPunch.

Pressthisbuttontoactivateanddeactivatethe .TheredLEDabovethebuttonlightsup to indicate isactivated.Youcanalso switch the onand offviaMIDIprogramchangeorCustomZ-9Footswitch.

The integrated programmablestereo effect loopoffersyoutheoptionof callingupaconnectedoutboardsignal processor'seffect atwill viaMIDIand assigning thiseffectto thepreamp'sdifferent channelsasdesired.Asanalternative,youcanusetheeffectloop to integrate an additional preamp into the system. In this case, use

and to switch to and fro between the 570 preamp and theconnectedoutboardpreamporcombinethetwodevices.

"unbalancedinput jack.Plugyourguitarinhereusingashieldedcord.

Depending on the type of cord and its shielding, you may occasionally encounterinterference from sourcessuch as radio stationsor powerful magnetic fields. Whenthisoccurs, tryconnecting yourguitar to theamp usingdifferent cords.What'smore,to minimize signal degradation due to high-frequency loss, use the shortest cordsfeasible (as a rule, the shorter the cord, the less susceptible it is to high-frequency

attenuation).

This knob determines the Lead I channel's input sensitivity and preamp saturationlevel.

ExtremelyhighgainandvolumelevelsinLeadmodecanproducepowerfulfeedback. Avoid feedback squeals; they can lead to hearing loss and damagespeakers! At highervolumes,backoff theGainandTreblelevelsandpossiblyPresencelevelsof aconnectedpowerampinordertopreventuncheckedfeedback!

ThetwoLeadchannels' fundamental tonesarenotworldsapart: boastsslightlylessgainandbottomend,but itsspeedier response makes it a great choice for briskriffingandlightningleadruns.

Pressing thisbutton upsinput sensitivity, thereby increasing the amplification factorand theamountof distortion inbothMainChannel 2'sLead Iand Lead IImodes.TheLED above thisbutton lightsup to indicate isactive. This feature can also beswitchedviaMIDIprogramchangeorCustomZ-9Footswitch.

When activated, supercharges the amplification factor, switching from

FXLoopFX Loop FX Loop

PreampDefeat FX Active Loop

Lead I

Hi Gain

Hi Gain Soft



CAUTION:



17 FXLOOPACTIVE

18INPUT

19LEADIGAIN

20HIGAIN

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Lead HeavyLead

Hi GainSoft Lead

HiGain

Lead IILead I

Lead I's

to and putting both Lead channelsinto high gear.Thisdoublesthenumber of basic sounds in Main Channel 2. The Soft Lead setting suffices for high-output pickups-even for playing leads-so you can leave off if your guitar isshred-approved. settings also work for chugging rhythm riffs or asalternativecrunchsounds,so give 'ematry.Butbyallmeans,for scorchingultrahigh-gain lead sounds with truckloads of sustain or for power chords with a monster

bottom-end,go fortheHeavyLeadvariantwith activated.

This knob determines the Lead II channel's input sensitivity and preamp saturationlevel.

ExtremelyhighgainandvolumelevelsinLeadmodecanproducepowerfulfeedback. Avoid feedback squeals; they can lead to hearing loss and damagespeakers! At highervolumes,backoff theGainandTreblelevelsandpossiblyPresencelevelsof aconnectedpowerampinordertopreventuncheckedfeedback!

The two Lead channels' fundamental tonesare not worldsapart: boastsa bitmoregainand bottomend than ,andworksverywell forfat,in-your-facesolosand chunky riffs with a big bottom end with plenty of low-frequency punch. Itsresponse isnot quite asspeedyas , and the low-end can turn muddyat highGainsettingsincombinationwithhigh-testosteronepickups.

This is the preamp voicing section's passive low-frequency EQ for Main Channel 2'sLeadIandLeadIImodes.

Thisisthe preamp voicing section'spassive midrange EQ for MainChannel 2'sLead IandLeadIImodes.

Thisisthepreampvoicingsection'spassivehigh-frequencyEQforLeadImode.

Thisisthepreampvoicingsection'spassivehigh-frequencyEQforLeadIImode.

Tohelpyougetacquaintedwiththepreamp'sfundamentalsounds,Irecommendthatyou set all tone controlsto about the center or 12 o'clock position. For higher-gain,high-volumeleadsounds,yourbestbet isto turntheTrebleknobdowntoprevent thepickupsandspeakersfromgeneratingfeedback(asetting inthe9-to-1o'clockrangeisrecommended).If your power amp -say, an ENGL tube power amp - featuresa Presence knob, youcould turnup thepreamp'sTreble knob abit andbackoff thepower amp'sPresenceknob when in Lead mode. If your power amp isnot equipped with a Presence knob

(meaningthat thepoweramp'sfrequencyresponseisfairlylinear),it isrecommendedthatyousetthetwoTrebleknobsto relativelylowvaluesinordertoprevent feedback.Besides,over-the-topTreblesettingsresult inoverlyaggressive,piercingleadtones.

CAUTION:



21LEADIIGAIN

22BASS

23MIDDLE

24TREBLELEADI

25TREBLELEADII

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TheLead IandLead IIchannelsareequippedwithdedicatedTrebleknobsso youcantweakthetopendof eachof thesetwochannelsseparatelytosuit yourtaste.Thoughthis passive voicing section's controls range is narrower than that of a comparableactive system, itsEQ curve istweakedspecificallyfor itsdesignatedpurpose,and willgive you satisfying results.What'smore, in combination with thetwo sound-shapingbuttons and , you haveheapsof voicing optionsfor tailoring basic

soundstotaste.

shapesmidrangefrequenciesforMainChannel2'sLeadIand Lead IImodes.When activated, Contour boosts low mids from 300 to 600 hertz as well as thefrequency at 1500 hertz. Note that the Contour setting influencesthe functionalityand range of the Mid knob (23). The LED above the button lights up to indicate

isactivated.This feature mayalso be switched viaMIDIprogramchange ortheENGLCustomZ-9Footswitch.

Though this voicing section is passive and its control range is therefore somewhatnarrower, with and you have two additional tools available forshaping the midrange. And for good reason music is made in the mids, and thesefrequenciesarecritical todialing inhappening lead tones.Youcanemploy toscoop mids radically and conjure rabid heavy metal tones or boost them to elicitassertiveleadsounds.

Thissound-shapingtool addressesmidrange frequenciesbyslightlylowering theMid

knob'sfrequencyspectrum.TheLEDabovethebuttonlightsuptoindicate isactivated. This feature can also be switched via MIDIprogram change or the ENGLCustomZ-9Footswitch.

Like , is a passive voicing feature. Consequently, its effect on thesoundscape is rather subtle. Technically speaking, it actually re-voicesthe Mid knob.Activating smoothesout lead tones' rough edges. Deactivatingand thins out the lead tones' midrange, creating a more brittle tone. Thisbrandof toneisbettersuited for rhythmworkbecause it isnot asaggressiveoroverly

assertive.Different combinationsof and yield fouradditional tonalvariants in Main Channel 2, and these variations can be programmed, stored andaccessedviaMIDI.

Determines the Lead I channel's level. Use this knob to adjust the Lead I channel'svolumeanddial in thedesired balance incomparisonwith the other channels' levels.Because thisknob islocated preeffect loop,it also determinestheeffect send level inLead I mode. The red LED to the right of the knob lights up to indicate the Lead Ichannel ison.

Contour Mid Edge

Contour

Contour

Contour Mid Edge

Contour

MidEdge

Contour Mid Edge

Mid Edge Mid EdgeContour

MidEdge Contour



26CONTOURACTIVE

27MIDEDGE

28LEADIVOLUME

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29LEADI

30LEADIIVOLUME

31LEADII

32MASTER

33NOISEGATE

Pushthisbuttontoactivatethepreamp'sLead Ichanneldirectly(inreciprocationwith, , , ).TheredLEDto therightof theLeadIVolume

knob(28)lightsupto indicateLeadIchannelisactive.ItmayalsobeactivatedviaMIDIprogramchange,theENGLCustomZ-9Footswitch,oradualfootswitch.

Determines the Lead II channel's level. Use thisknob to adjust the Lead II channel'svolumeanddial in thedesired balance incomparisonwith the other channels' levels.Because thisknob islocated preeffect loop,it also determinestheeffect send level inLead IImode. The red LED to the right of the knob lightsup to indicate the Lead IIchannel ison.

Pushthisbuttontoactivatethepreamp'sLeadIIchanneldirectly(inreciprocationwith, , , ). The redLEDto the rightof theLead IVolume

knob(30)lightsup to indicatetheLeadIIchannel isactive.ItmayalsobeactivatedviaMIDIprogramchange,theENGLCustomZ-9Footswitch,oradual footswitch.

Master volumeknob.Located post effect loop,it controlstheoverall preamp outputlevel.Youcan also set themaster level to 0viaMIDIcontroller 7.To learn how to dothis,seesection57inthe chapter.

TheMasterknobaffordsyouinstantaccessto thepreamp'soverall output level.It lets

you quickly adjust the master volume without having to modify the individualchannels'volumes.Remotecontrolvia(MIDI)footswitchisaniftylittleutility:If yourarsenalincludesMIDIgear - for instance, the ENGL Z-15 MIDI Footcontroller - you can use the preamp'smaster volumemutecircuit to swiftlyand convenientlyset thepreamp'soutput levelto0duringshortbreaksorwhenswitchingaxes.

Pressthisbutton to activatean onboard and suppressexcessnoise in the

Crunchchannel orthetwoLead channels.Control theNoiseGateusing thetwoLevelThreshold(40)andMuteDepth(39)knobsonthebackof thepreamp.TheLEDabovethe button lightsup to indicate the isactivated. This feature can also beswitchedviaMIDIprogramchangeortheENGLCustomZ-9Footswitch.

:The mayopenup inadvertentlywhenthe isactivated,ahigh-gainLeadchannel isselected,andthevolumeexceedsthe Threshold knob setting. At veryhighvolume and gain settings, thismaygenerate instant feedback, particularly if your guitar is facing the speakers. Ratherthan musical and controlled, this is the shrill, unpleasant and potentially harmfulvarietyof feedbacksquealingthat sendsyouraudienceand fellowmusicianspacking.

Though the preamp is not more susceptible to feedback when the isactivated, the fact that it suppresses extraneous noise meansyou can't hear those

Clean Crunch LeadII PreampDefeat

Clean Crunch LeadI Preamp Defeat

RearPanelFeatures

Noise Gate

Noise Gate

NoiseGateNoiseGate

Noise Gate


IMPORTANTnote;pleasereadandheed

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telltale signs that feedback is swelling and consequently can't take measures tosuppressit.For thisreason,makeanextraeffort tobecareful when the isactivated:Before you approach the preamp or 19" racksystem and speaker cabinetwithyourguitar inhand,turn theguitar'svolumeknob to thefar left position(to0sothatnosignalisaudible)topreventthepickupsandspeakersfrominteracting!

Noise isa definite no-no in many situations. For example, studio etiquette demandsthat youkeep a lid onextraneousnoiseduringshort breaks.It'sinthenatureof high-gain rigs to generate undesirable peripheral noise in overdriven channels. This isattributable to the physical properties of an amp's constituent components, inparticular itsactive components. That's right;those cherished tubesare the culprits.TheNoiseGate isa tool that letsyousilence thisnoiseduring breaksbywayof signalmute circuit. Note that electric guitars pick up interference signals, and these areamplifiedtremendouslyathighgain levelsin Leadmode.Themost commonsourceofnoise is 50 or 60 hertz mains hum, particularly when the guitar is positioned neartransformers and power units. Because in worst-case scenarios this humming canattain extremely high levels, the Noise Gate can hardly distinguish between themusical signal and noise. Thismakes it hard to find the right Threshold setting. It isentirelypossibleforthishummingandothernoisetorisetoalevelthatdeactivatesthe

and therefore becomes audible. My advice is to stay as far away fromtransformersandpowerunitsasspaceallows.

NoiseGate

Noise Gate


34WRITE/COPYPressthisbutton to store the modified settingof a programmable feature to a MIDImemoryslot (generallycalled apreset).Here'show to distinguishbetween and

:withtheformeryou'reactuallyprogrammingorwritinganewMIDIpreset,withthelatteryou'remakinganexactduplicateof anexistingpreset.Thesystemwill selectaWriteoperationwheneveryoueditaMIDIpreset,that is,whenyouhavemodified aprogrammablefeature.You'll knowthat thisisthecasebecausetheStatusLEDflashessteadilywhenyoueditoneorseveralprogrammablefeatures.Ifyoupressthebuttonand did not edit a MIDIpreset,the systemwill select . Thismeans that the given preset becomes the source, and its contents are dumped toanotherpresetandstored there.

Thesystemquits modeautonomously

ifyoudonotselectanewMIDIpresetwithinabout30seconds.Thepreset programming process--theWritecommand, that is--isnot carried out assoon as you press the button. Pressing the button merely initiates the process. Youmust hold it down forabout asecond until theStatusLEDflashesthreetimesinrapidsuccession.Thismechanismisdesignedtopreventinadvertentprogramming.Youcancancel theprogrammingprocessatanytimebeforetheStatusLEDfirst illuminatesbyreleasing theWritebutton.Again, thepresetwill onlybeprogrammedsuccessfully ifyoupressandholdthebuttonuntiltheStatusLEDflashesthreetimes.

Write

Copy

Copy

CopyWhenyoupressthisbutton,theStatusLEDlightsup

continuouslyto indicate isactivated.

You'll have to go through a similar routine to copya preset once you select a targetpreset:WhentheStatusLEDextinguishes,thecopyoperationisunderwayandcanno

longer be cancelled. The LED flashes three times to indicate the preset was copiedsuccessfully. You can cancel the copyoperation byreleasing the key, but only for aslongastheLEDlightsupcontinuously.

Copy

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IMPORTANTnote;pleasereadandheed

Moregood-to-knowinfo:

:MIDIpreset 1activateswhen the preamp ispowered up.If you want to edit and/orstore other MIDIpresets, youmust connect a MIDIfoot board or another MIDIsenddeviceto the port (55)andusethisoutboarddevicetoselect thedesiredMIDIpresetonthepreamp.

Note that the StatusLEDalso indicatesthe statusof componentsunrelated toand .Themicrocontroller runsashort systemcheckafteryouswitch thepreampon.Shouldit findadefect inthememorychip(EEPROM),theLED

PresstheWrite/Copycopybuttontoconfirmthatyougotthemessage.Onceyouhavedone this, the system will be ready to run, although you may encounter problemswhenattemptingtoselectorstoreMIDIpreset.

MIDIIn

WriteCopy

35POWER

MainsConnector

CAUTION:

37MAINSFUSEBOX:

CAUTION ALWAYSmakesurereplacementfusesareofthesametypeandhavethe

sameratingsastheoriginalfuse!Tothisend,pleaserefertothefuseratingstable.

38GROUNDLIFTSWITCH

Please note:

Mains power on/off.

At thebackof themanualyou'll findafoldedpageofferingdiagramsof thefront andrear panels. Please unfold and refer to it as you read through the descriptions offeaturesandfunctions!

Plug the mains cord in here. For European models, use a standard non-heatingequipmentconnectorcable.

Makesureyouusean intact mainslinecordwithagrounded plug! Beforeyou power the preamp up, ensure the voltage value printed on the label under themainssocket isthesameasthecurrentof thelocalpowersupplyorwalloutlet.Please also heed the guidelines set forth in the separately included pamphlet,

.

Therearchambercontainsthemainsfuseandthefrontchamberasparefuse.:

This switch severs the circuit connecting the preamp's internal ground to the wallreceptacle's ground terminal. You can set the switch to when youhaveconnectedasignalprocessororpowerampandwant toprevent thetwodevices'groundsfromformingagroundloopthatmanifestsinannoyinghumming.

A ground loop is an extraordinary condition. Under ordinarycircumstances, ensure the button isset to to earth the preamp to the mainsground,therebypreventingungroundedlinenoise!

Rear Panel Features

InstructionsforthePreventionof Fire,ElectricalShockandInjury

Ground Floated

Ground

will flashinapatternof fiveshortbursts.

36

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39MUTEDEPTH

40THRESHOLDLEVEL


41STEREOFREQUENCYCOMPENSATEDLINEOUTPUT

42OVERLOAD

43LEVEL


Thisknob setting determinesto which extent the level dropswhen theactivemutesthesignal;inotherwords,it setstheresidualvolumelevel.Thefurtheryou

twist the knob clockwise, the greater the drop in (noise) level when themutesthesignal.

Usethisknob to set athresholdvalue(that is,thenoise level)at which theactivatesto suppressthesignal.Thefurtheryoutwist theknobto theright,thehigherthesignal level at which the kicksin.The can beactivated anddeactivatedasrequired for theCrunchchannelandthetwoLeadchannelsbypushingthefrontpanelbutton(33).

, and generatedifferent levelsof noise,and Ituned theENGL 570preamp's accordingly.However, there issome minormatchingvariancebetween the three. (Lead channel and activated)standstobenefitmost fromthe ,so Isuggest that youtweakitstwoknobsforthismode.

Thisstereo"jackservesastheoutputof thefrequency-correctedlinefilter.Itdeliversanunbalancedstereo-signaland it isequippedwithaground terminal.You canpatchthepreampsignal routed throughthisjacktoarecorderoraPC'saudiocardviasometype of adapter (depending on the type of inputs on the audio card). Dial in thedesiredsignal levelviatheLevelknob(43).

ThisLEDlightsupto tell youtheLineOut issaturated.If it illuminates,simplyrollbackthesignallevelusingtheLevelknob(43).

Thisknob determines the level of the frequency-comensated Line outputs (41 & 44,45).Useit toadjust thepreamp'slineoutput signal level tomatchtheinputgainof themixingdeskorrecorder'sinput.

The following factors determine Line Out level: the preamp input level (Gain), thegiven channels' Volume knobs, and to some extent, the tone controls and sound-shapingbuttons'settingsaswellasthepositionof theMasterknob.Thosearea lotofvariables, so Irecommend you proceed asfollows:Configure buttonsasdesiredanddial inthedesiredsettingsonthefrontpanel.Adjust thelevelsof connectedFXdevicesandsignalprocessors.Finally,usetheLevelcontrol toadjust thelinelevel.TheLineOutisnotoverloadeduntil theOverloadLED(42)lightsupcontinuously.Youcanpushthelevelupto thispoint tomatchamixerdeskorrecorder'sinput levelrequirements.Usethegivendevice'sinputsensitivityorgaincontrol to fine-tunethelinelevel.

NoiseGate

Noise Gate

NoiseGate

NoiseGate NoiseGate

Crunch Soft Lead HeavyLeadNoise Gate

HeavyLead Hi GainNoiseGate

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44&45FREQUENCYCOMPENSATEDLINEOUTBALANCED

46LINEOUTGROUND

IMPORTANTNOTE:

47LEVEL

48STEREOOUTPUTRIGHT

49STEREOOUTPUTLEFT

50FXLOOPRETURNRIGHT

Thesearethefrequency-corrected(compensated)andbalancedrightandleft channelline outputs. Pin 2 and 3 of the XLR jack carry the signal, pin 1 =N.C. or grounddependingonthepositionof theGroundswitch(46).

Youcaninsert thesignalsroutedthroughtheseoutputs directly into a mixing console or recording gear equipped with balanced

inputs. The advantage of a balanced circuit is that this type of connection will notcreateagroundloop,providedof course it iswired correctly.Dial inthedesired signallevelforthetwobalancedlineoutputsbyadjustingtheLevelknob(43).

Thisswitchassignspin1of thetwoXLRsocketstoground(GroundtoPin1).You'll findthisoption comesinhandywhen youwant to earth the circuit youhave routed to amixingconsoleorrecordingdevice.

Youencounter something called aground loop if yourpreamp isconnected to a mixing console or recording gear and pin 1 of both devices' XLRconnectorsserveasgroundterminals(theXLRGroundbuttononthepreamp isset toGround to Pin 1). A ground loop is readily identified by the infernal hummingemanating fromyour speakers. Set this button to the position "Ground Floated" tosolvetheproblem!

Thisbuttondeterminestheoutput levelof thestereooutput jacks.Pressthebuttontosetahigherlevel (upto +15dB)suitablefor driving lesssensitivepoweramps.Do notpress if you need a lower level (up to -5 dB) to feed the signal to additional signal

processorsorextremelysensitivepowerampinputs.

This unbalanced " line out jack carries the preamp's right channel signal. You canpatch the signal routed to this jack to a power amp or a signal processor using ashieldedcordequippedwith"plugs.

Thisunbalanced"lineoutjackcarriesthepreamp'sleftchannelsignal.Youcanpatch

thesignalroutedtothisjacktoapoweramporasignalprocessorusingashieldedcordequippedwith"plugs.

Connect theright FXLoop input toasignalprocessor'sright channeloutput/send jackusing the shortest possible shielded cord equipped with 1/4" plugs. Activate anddeactivateitviatheStereoFXLoop(17)button.Inthesignalpath,theislocated post channel Volume controlsand and pre the Master volume control andtheoutputdriverstage.

StereoFXLoop

Thesignal routedto thisoutputlimitstheresponseof aguitarcabinet.

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51FXLOOPRETURNLEFT

52 FXLOOPSEND

53AUXILIARYINPUT

54MIDITHRU

55MIDIIN

CAUTION:

56 POWER SUPPLY FOR THE ENGL MIDI FOOTCONTROLLER

Please read andheed:

Connect the left FX Loop input to a signal processor'sleft channel output/send jackusing the shortest possible shielded cord equipped with 1/4" plugs. Activate anddeactivateitviatheStereoFXLoop(17)button.Inthesignalpath,theis located post channel Volume controls and and pre the Master control and theoutputdriverstage.

Connect this output to a signal processor's input/return jack using theshortestpossibleshieldedcordequippedwith1/4"plugs.ActivateanddeactivateitviatheFX Loop Active (17)button. In thesignal path, the islocated postchannelVolumecontrolsandpretheMastercontrolandtheoutputdriverstage.

Thisisthepreamp'sancillaryinput.Thecircuit iswired inserieswith the input locatedonthe front panel.Use it to connect thepreamp to a19"rack setup.The front panelinput haspriority.Inotherwords,whenyouinsert apluginto thefront panel jack(1),thesignalroutedinviatheAux.Inputiscutoff.

This5-pin DIN port patches incoming MIDIdata fromthe (55) to any otherconnectedMIDIdevice.

This5-pin DIN port acceptsdata sent bya MIDIsender (for example, the ENGL MIDI

Z-12,Z-15,orZ-9foot controllers)or fromor routedthroughanotherMIDIdevice.Switch no.56 letsyouactivate the preamp'spower supply if youhave an ENGLMIDIfootcontrollerconnectedtothisport.

Before you connect any other MIDI footswitch or effects device, alwaysmakesurethatswitchno.56issettotheright toavoiddamagingthedevice.

This selector activates a MIDI In port power supply for connected ENGL MIDI footboards.Powerisfedto theboardviatheMIDIcircuit.Whentheswitchisset to theleft

position,power isrouted to theMIDIInport'spin1andpin2(refer topage30forpinassignments). If youchoose to useanotherMIDIfoot board,besure to set theswitchtotheright toavoiddamaging it.If thefootboardyouareusing isdesignedtohandlephantompower, consult itsoperating manual to learn how it iswired (that is,whichpinscarryitspower supply)andwhat itsvoltageandcurrent specificationsare. If thevoltageandcurrentspecificationsandwiringmatch,youmaysettheswitchto thelefttopowerthisfootboardviatheMIDIcable.

Note that a MIDI foot board maynot draw more than 200milliamperesof current if youwant to power it viathisport.Youmust also checkandverify if thisMIDIfoot board isable to handle11voltsof alternating current (AC)! If

you are in anydoubt, be sure to consult a specialist, meaning an amp technician orelectronicsengineerwhoearnsalivingwithascrewdriver!

StereoFXLoop

FX Loop

Stereo FX Loop

MIDI In

18


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57MIDICHANNEL&VOL.0


58FOOTSWITCH:SERIALAMPCONTROLPORT

Usethisset of encodingbuttons(1,2,3,4and5)to assign theMIDIchannel.Thistellsthe preamp'sMIDIsystem over which channel it will receive MIDIprogram changecommands. Your choicesare the standard 16 MIDI channels (numbered from00 to15), aswell asOMNImode(wherebyall MIDIdata isreceived regardlessof the MIDIsend channel). The encoding button settingsfor a specific channel and OMNImode

arelisted inthefollowingtable.Encoding buttonnumber 6 letsyouprogramthe preamp so that it ismuted when itreceivesaMIDIcontroller7command.When thiscommandhasavalueof 0(and lessthanandequal to 5),thepreamp'smastervolume ismuted.At valuesgreater thanorequal to5,thepreamp isbackonlineat thevolume level determinedbythecurrentlyactiveMasterknob.Setting the encoding button S6 to ON activates Master Volume Mute.Setting the encoding button S6 to OFF deactivates Master Volume Mute.

MIDI channel assignment using the encoding buttons:

MIDI-channel: S1 S2 S3 S4 S5 S6OMNI OFF XX XX XX XX XXCH1 ON OFF OFF OFF OFF XXCH2 ON OFF OFF OFF ON XXCH3 ON OFF OFF ON OFF XXCH4 ON OFF OFF ON ON XXCH5 ON OFF ON OFF OFF XX

CH6 ON OFF ON OFF ON XXCH7 ON OFF ON ON OFF XXCH8 ON OFF ON ON ON XXCH9 ON ON OFF OFF OFF XXCH10 ON ON OFF OFF ON XXCH11 ON ON OFF ON OFF XXCH12 ON ON OFF ON ON XXCH13 ON ON ON OFF OFF XXCH14 ON ON ON OFF ON XXCH15 ON ON ON ON OFF XXCH16 ON ON ON ON ON XX

As the table indicates, encoding button 1 switches between Polyand OMNImode.Bear this in mind for practical applications, because this is a fast way to go fromapresetPolychanneltoOMNImodeandviceversa.

Thisserial data input accepts theCustomENGL Z-9 Footswitch (optional), which lets

you control various preamp functions remotely. Connect the Z-9 Footswitch to theserial amp control port using a cord equipped with stereo " jack plugs. ThisMIDI-

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enabledfoot board isacustomdesignthat switcheseverypreampfeaturedesignatedas footswitchable in this manual. To learn if a given feature may be controlledremotely, refer to its description herein. The MIDI In port is disabled when the Z-9Footswitchisconnected.

Connect only the ENGL Z-9 Footswitch to this6.3 mm(1/4") stereo jack!Connectinganyotherswitchingdevicemaydamageitand/orthepreamp'scircuitry!

TheCustomZ-9Footswitchwasdesignedwiththenon-MIDIguitarist inmind.It'ssureto delight if you don't or won't use MIDI systems. Based on a rather nifty switchingconcept, it provides direct access to the four channels and As analternative to the option,youcanopt to control anyother switchablepreamp functions, for example , , etc. Another tremendousbenefit of thismicrocontroller-driven foot board isthat it connectsto theamp viaaneasilyobtained,standardstereocord.Butthat'snot thelastof theZ-9'sadvantages:Atsomepoint,youmaydecidetorampuporconnect toaMIDIsystem.Thiswon't rendertheZ-9obsoletebecauseitalso servesasasimpleMIDIfoot boardwithaMIDIOUT(5-pin DIN connector) that selects10 MIDIpatches (or presets, if you prefer). Again, Iwant toemphasizethat youshouldneverconnectanotherfoot boardto thisjack:TheZ-9 controls the preamp via a proprietary ENGL serial data protocol, and the SerialAmpControl Port wasdevelopedexclusivelyforENGLamps.Noother foot boardwillworkandinfact islikelytodamagethefootboardorpreamp'scircuitry!

Use thisjack to connect a conventional footswitch with two switching functions(forexample,theENGLZ-4)that let youaccessthefourchannels , , and

. One of the two switches activates Main Channel 1 and 2, while the otheractivatestheselected MainChannel'stwo subordinatechannels, and or

and , as the case may be. The onboard channel switching facility, toinclude switching,isdisabledwhenyouplugafootswitchintothisjack.

A footswitch maybe equipped with LEDs indicating the given switchingstatus. Each of the two switches is provided with 15 milliamperes current, whichsufficestopowerastandardLED.The jack's mono terminal selects the Main Channel, while the stereo terminal selectsthe sub channel (refer to Pin Assignments on page 30).

CAUTION:


59FOOTSWITCH:CH1/CH2,SUBI/II

Notealso:

Preamp Defeat.Preamp Defeat

Modern/Classic Hi Gain

Clean Crunch LeadI

Lead IIClean Crunch

Lead I Lead IIPreampDefeat

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A few words from the designer on your ENGL 570 Preamp's sounds andsettingsaswellassomepracticaltips:

A great deal of effort went into tuning this tremendously versatile tube preamp; Idevoted particularly painstaking attention to the details: The Clean and Crunchchannelsarematched so that theirGainrangesoverlap somewhat;thesamegoesfor

and . This is intentional, and serves very sensible sound-sculptingpurposes. For instance,higher Gain settings(in the12-to-3o'clock range, dependingon pickups) push the Clean channel into moderate overdrive, and activating GainBoostpropelsthischannelinto thedirt zonethatmuchearlier.Thismeansyoucanusethischannelforultracleanchordwork,jazz-stylecompingandcluckingchicken-pickedlead lines. And courtesyof that typical tube overdrive, it meansthe same channel isgreat grittier riffs and leads, with the amount of dirt hinging upon how hard youattackthestrings.If youaddtheguitar'svolumeknobto thesonicequation,yougetavast spectrumof fine tonal distinctionsinjust thisonechannel.Thesamegoesfor the

Crunchchannel:Itsspectrumrangesfromclean(whenGainissetnohigherthanabout10 o'clock, depending on pickup) to fat, wooly, and warmtube overdrive at higherGain settings. High-output pickups such as humbuckers will even serve up enoughoomph for punchy leads. Though these application areas overlap somewhat, theCrunch and Clean channels are voiced differently. Crunch features an additionaltriode, making it a tad more dynamic and eliciting a slightly different frequencyresponse.Whenusedincombinationwithhigh-outputpickups,Irecommendthatyouroll off the bottom-end (and give a wide berth) a touch to forestalllow-endmud.MainChannel I( and )voicing controlsrespond differentlythan thoseof

MainChannelII.Inconsequence,Isuggest thatyoustartbydialinginsettingsbetween12and3o'clock,tweakingeachto tasteandcomparingthedifferences.Again,Ioptedfor passive tone controls, which putseach knob's control range at about 10 dB. Asyou'reexperimenting withmodifying settings,youmaynotice that when theCrunchor Lead channelsare in Classicmode and you arepushing the preamp hard, the EQseemsslightlylessassertivethaninModernmode.All these optionsharbor vast and musicallymeaningful sonicpotential. I'mconfidentthat theGainknobs, tone controlsandsound-shapingbuttonswill let youconjureallthe soundsyou have in mind and that you'll discover a world of toneswhile you're

tweaking.On top of all that, with and , you have two voicing options for everypreamp channel: Particularly in the high-gain channels, these give you two verydistinctive distorted sounds for each channel. The contrast between the two sonicflavorsisnot merelya matter of different gain levels.Thestructuresof the saturatedsignals differ, and each is fine-tuned to work its tonal magic with a specific genre.

packsamightylow-endthumpandboaststruckloadsof gainthat'sthewaytogotoforheavy-duty,powerchordriffingtypicalof contemporarystyles.Note that you can tighten up and focus Lead channel tones using the two sound-shapingbuttons and .Tweakedforafatter,warmersound,addsahealthyhelpof midsaroundthe500-hertzmark.Thetwoparameters and

putaremarkablearrayof low-endtweakingoptionsatyourfingertips.

Lead I Lead II

Mega Lo Punch

Clean Crunch

Modern Classic

Modern

Contour MidEdge ContourBass

MegaLoPunch

OntheSubjectofSoundsandSettings

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MegaLoPunch

LeadI'sLead II

Lead IILead I Hi GainSoft Lead

Heavy Lead

Lead I Modern Lead II Modern Lead I Classic Lead IIClassic

Soft Lead

NoiseGate

NoiseGate

Soft Lead Hi GainCrunch NoiseGate

Noise Gate

NoiseGate

Noise Gate

sound-shapingbutton isprogrammable,providinginstantMIDIaccesstoahostof sonicconfigurations.In addition, I made a point of tuning the two Lead channels to respond slightlydifferently: responseisa bit moreaggressive,fasterandmoreprecise itallbutlungeswhen you attack strings. , on the other hand, is not quite as testy. Itsresponse isnot asrabid,and with an extra sprinkling of low end added to the sonic

recipe, it also deliverswarmer tone. demandsrather precise technique,whilethemore forgiving iseasier to handle.The feature givesyou two morevoicing options for each of the two Lead channels- (moderate Gain level)and (ultra high Gain shred). What's more, you can even tweak eachindividuallyusing thededicatedGain,VolumeandTrebleknob.Thisbringsabunchofbenefitsto you,including greater freedomand moreprecision insound-shaping.ThefourSoft Leadvariants( + , + , + , +

) run the gamut of crunch tonesfromlight (with the Gain knob set no higherthan 11o'clock) to heavycrunch (with the Gainknob somewhere between 10and 1o'clock),with tonal propertiesdiffering quitemarkedlyfromCrunch channel sounds.Thesemodeseven let youdial in relatively lean clean sounds.So if clean isyour thingandyourmusicmandatesarangeof different cleanvariants,simplyset theGainknobbelow the9o'clockmarkand select (Lo Gain)to seewhat youcancomeupwith.Because it ischock fullof tone-tweaking tools,thispreamp issureto surpriseyoutimeand again with new sonic variants. However, there'sno need to panic in face of itssophisticatedfunctionality.At ENGL,easeof useisparamount.Wedesignallourampsso that players can dial in great sounds from the start - without hours spentresearching themanualandstrugglingwithsettings.Despitebeingsoeasytouse,the

ENGL 570 preamp puts into thehandsof the innovative,creative guitarist anall butinexhaustiblebonanzaof sound-shapingresources.And Iamconvincedthatguitaristswithmoretraditional leaningsareequallywell-servedwiththispreamp'ssmorgasbordof tastytubetone!

Theadvantageof a that isinstalled inandmatchedtothepreamp isthat itletsyou fine-tuneitsthresholdwithextremeprecision,therebyseparating theuseful,musical signal fromuselessbackgroundnoise.Indeed,this wasdesignedtoaddressthesignalthemost beneficial spot inthesignal chain-thepreamp-to makeitmore effective. First and foremost, it is designed to suppress ambient noise such ashissingandhummingduringbreakswhentheLeadchannel isinHeavyLeadmode.Forthisreason, Ituned itsthreshold (that'sthe level at which thegate triggers) range tosuit this preamp mode, and then adjusted it for (Lead channel,deactivated)and configurations.To get acquainted withhow theworks, I suggest you start bysetting the Threshold knob to the far left (opensat low signal levels) and slowly twist it clockwise to gradually raise the gate'strigger threshold.When theknob arrivesat the far right position, the willnot triggeruntil thesignal reachesaveryhighlevel.Thismeansthat thepreampmust

amplify the guitar signal considerably to open up (or deactivate) the . Inpractice,yourbest bet forsuppressing loudnoisewhenrunningLeadchannelsathighGainlevelsisto set theThresholdknobhigher than12o'clock.If you'redoingthe low-

AfewcommentsontheNoiseGate:

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gainthinginCrunchorSoft Leadmodes,dial inalowerThresholdknobsetting(below12 o'clock) to prevent the gate from throttling notes (that is, the musically usefulsounds)astheydecayparticularlyif youliketoworktheguitar'svolumeknob.

Forreasonsof convenienceandhandlingease,wemadeprogrammingsoundstoMIDI

presetsapieceof cake.Becausethispreamp offersso manyprogrammableswitchingfunctions, isindeedahandytool.It letsyoucopythesettingsof oneMIDIpresetto another. You'll come to appreciate its utility when you begin programming yourown presets.Dumpinga stored setup fromone MIDIpreset to another,and editingandstoring changesin the target preset, isso must faster andmore convenient thanprogramming fromscratcheverytime.MIDIpreset 1 iscalled upautomaticallywhenyou switch the preamp on. This ensures that when you power up, the settings forprogrammablesound-shapingfunctionsareimmediatelyenabledintheconfigurationstoredinthemost recentprogrammingsession-withouthavingto firstconnectaMIDIfootboard.

1. Select thedesired MIDIprogram(also called a preset or patch)using a MIDI footboardconnectedtotheamp's (55).2. Set all programmable featuresasrequired, configuring , , ,

, , and so forth asyou please.All programmable functionsaredesignatedassuchintheirdescriptionsherein.3.TheStatusLEDflashesto indicateyouhaveeditedoneorseveralsettings.4. Pressand hold the Write/Copybutton (34) for about one second until the StatusLEDextinguishes,andthenflashesthreetimesinrapidsuccession.Thecurrentsettings

of allprogrammablefunctionsarenowstoredintheselectedMIDIpatch.

1. Select the desired MIDI preset using a MIDI foot board connected to the E570preamp'sMIDIInport.Thisisthepreset that youwant to copy,which iswhyingeek-speakit iscalledthe"source."2.PresstheCopy/Writebuttonbriefly.It isessential thatduringthisroutineyoudonotchange the settingsof programmable functions in the selected source preset. ThatStatusLEDlightsupcontinuouslyto indicatethatCopyisactivated.3.Select thetargetpresetviatheMIDIfoot board;youhaveapprox.30secondstodo

this.(ThepreampautomaticallyquitsCopymode30secondsafterit isactivated.)4. Pressand hold the Write/Copybutton (34) until the StatusLED extinguishes, andthen flashesthreetimesin rapid succession.Thecurrent settingsof all programmablefunctionsstored inthesourceMIDIpatch(that'sthepresetyouselectedfirstwhenyouactivated )havenowbeendumpedtothenewlyselectedtargetpreset.

Programmingsounds(settings,actually)toMIDIpresets:

Theprogrammingprocessinsteps:

Copying:

Copy

MIDIInHi Gain Countour Lead I

MegaLo Punch Noise Gate

Copy

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HandlingandCare:

Keep the preamp safe fromhard knocksand shocks. Tubesare fragile and tend tosufferwhenexposedtomechanicalstress!

Let the preamp cool down before you transport it. Ten 10 minutes or so will do to

sparethetubes.

Tubestakesome20secondstowarmupafteryouswitchthepoweron.Makeahabitofgivingyourpreampplentyof timetoget toastybeforeyoustartplaying.

Avoid storing the preamp in damp or dusty rooms to spare jacks, switches andpotentiometers.If youdon't usethepreampall thetime,Irecommendthatyoudrapeacoveringoverittoprevent theintrusionofdust.If youinstallyourpreampina19"rack,closetherack'slidwhennotinuseforextendedperiods.

Neverusecausticor scouring detergentsto cleanthepreamp'shousing,front or rearpanels.Useasoft,dampclothorspongewithdilutedsoapsudsorastandardbrandofmilddishwashingliquidinstead.Neverusesolventstheycandissolvethefrontandrearpanel labels.Keep liquidswell awayfromthepreamp,particularlythe interior of thehousing.

Makesureaircancirculateat the twosidesandrearpanel of thepreamp toallow foradequatecooling,whichincreasescomponentlife.

Highambient temperaturesplaceanadditional strainondiversecomponents;so if atall possible, avoid operating the preamp at temperatures far higher than 30C forlonger periods.Running thepreamp at mainsvoltagesexceeding thenominalmainsinputvoltageoverlongerperiodscanalsoshortencomponentlife.

Replace tubes with selected tubes that satisfy ENGL selection criteria to forestallmicrophonicproperties,undesirablenoiseand lossof Gain.Tubereplacement isa jobbest left toexperiencedandauthorizedspecialists.

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Glossary

MIDI-Preset:

MIDIChannel:

MIDI-VolumeandMasterVolumeMute:

Inthismanual,MIDIprogramsarecalledpresetsandpatches.Though the MIDI standard defines program numbers 000 to 127, almost all MIDIdevices and foot boards indicate and control these programs using a 1-to-128

numberingscheme.

MIDI specifications define 16 channels for sending and receiving MIDI data. Theencoding buttons on the back of the preamp determine the MIDI data receiverchannel.MIDIchannels:1to 16,orOMNI(meaningthat all 16channelsreceiveMIDIdata).

Thisoption letsyouaccessthe preamp'sMaster Volume Mute function viaa suitableMIDI foot board. This foot board must like the ENGL Z-15 - be able to send MIDIcontroller 07 data. In order to afford access to Master Volume Mute, this functionmustbeenabledusingthecorrespondingencodingbuttononthebackof thepreamp.

The Status LED above the Write/Copy (34) button indicates the followingconditions:

1. A programmable function's (or functions') setting(s) has (have) been edited;Indication: LED flashes regularly; What to do: If desired, restore this MIDI preset'soriginal configuration (e.g. by selecting it again); the Status LED also extinguishesonce the new setting has been stored.

2. Copy process was activated by pressing the Write/Copy button;Indication: LED lights up continuously; What to do: If desired, cancel the Copyoperation by changing the setting of a programmable feature; the Status LED alsoextinguishes once the preset has been copied.

3. Memory error (possibly a defect in the EEPROM); Indication: LED flashes in fiveshort bursts; What to do: Press the Write/Copy button (this resets the LED, butdoes not solve the problem).

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Troubleshooting

Programmable features fail to respond when you change settings:

The preamp fails to respond when you try to switch presets via MIDI foot board.

The preamp is not providing an output signal / no sound is emanating from thespeaker/s.

The speaker, recodring device or P.A. system is emitting humming noises:

->Powerful static charges, strong radio signals or mains voltage spikes can affectmicrocontroller-driven systems, setting them to an undefined status (commonlycalled a hung chip). In this event, your only choice is to reset the system.

Simply switch the preamp off and on again.->If a reset doesn't solve the problem that is, the chip is still hung there

is a defect in the control system (presumably on the logic board holdingthe microcontroller). In this case, consult an authorized service centeror a professional specialist.

->Is the MIDI foot board connected to the MIDI IN port (55)?->Is the MIDI cord you are using intact and wired properly?

(Refer to page 30 for pin assignments.)->Is the preamp set to the MIDI channel over which the MIDI foot board is sending

program change commands? You can set the encoding button S1(57) to OMNIreception to check if the preamp is actually receiving data.

->Is another foot board (the ENGL Z-9 or a two-way footswitch) connected andtherefore blocking MIDI reception?

->Are all cords (guitar, effect, poweramp and speaker) connected properly

and are they functional?->Unplug connected effectors and see if the preamp works fine without these

peripheral devices.->Check the function of the connected poweramp and the cabinets.->Is the Noise Gate activated in one of the Lead channels and the Threshold (40)

knob set to a high value? Deactivate the Noise Gate (33) for a quick check.->Are the Master knob and the Gain and Volume knobs set to a value

greater than 0? If any of these knobs is set to 0, no signal is routedto the preamp's outputs.

->Did you send via MIDI foot board a MIDI controller 7 command witha value less than or equal to 5? This activates Master Volume Mute,thereby silencing the preamp.You can check this by deactivating the Master Volume Mute by resettingthe appropriate encoding button (57) accordingly.

->You may be looking at a faulty tube or another defect. In this case,be sure to take the preamp to an authorized, professional service center.

->Is the Ground Lift switch (38) set to Ground? If you are operating the

preamp with other grounded gear (power amp, effect devices) connected,this switch must be set to the "Ground floated" position; otherwise, it's goodbye

26


27/34

silence, hello humming! In this case, the preamp will hum even without a guitarconnected.

->Cords connected to the input, effect loops or to the power amp may not beshielded properly. Replace them to check if this is indeed the case.

->The preamp or speaker cords may be picking up interference from powerfulmagnetic fields (for example, of nearby power transformers or electrical motors).

Reposition the preamp and connector cables.->The preamp or speaker cords may be picking up radio signals, for example,from activated mobile telephones or powerful local transmitting stations nearby.Switch off mobile phones while troubleshooting noise problems.

->If you are feeding the signal to recording equipment or a mixing console viathe preamp's and the XLR Ground (46) button is set to Pin 1 to Ground,the problem may be a ground loop that has been formed with the connecteddevice's ground. Set the button to Ground Lifted.

Line Out

27


28/34

Technical Data

Input sensitivity

Output level

Power consumption:

Fuses:

Important:

Tubes:

Logic control system:

System interfaces:

Dimensions:

Weight:

Input:Effect Return:

SEND, level range:Level Lo:Level Hi:Frequ. Comp. Line Out:

external:at 230/240 mains voltageat 100/115/120 mains voltageinternal:

V1:V2, V3:V4:Consult Tube Map

to view tube array

Processor, software:

Memory:

MIDI:

Serial Amp Control:

28

from -20 dB, nominal, max. 0 dB;from -20 dB nominal, max. 0 dB;

from -20 dB to approx. 0 dB max.;

0,25 ATL0,5 ATL

.

ca. -5 dB max.;ca. +15 dB max.;ca. 0 dB max., (depends on frequency);

ECC83 selected;ECC83 standard;

Mute, value >5 = defaultMaster Volume level;

kg

approx. 35 watts (VA) max.;

(0,25 amps slo-blo)(0,5 amps slo-blo)

2 x 0,315 ATL (0,315 amps slo-blo)

AT89C52 C with internal 8K Flash Memory forsoftware source code; Upgradeable withexternal Programmer;EEPROM 93C66 for data retention;

Asynchronous data protocol according to the

MIDI standard;

Proprietary ENGL asynchronous data protocol

19" rack, 2 rack spaces, 360 mm overall depth,approximately 300 mm chassis depth;

approx. 8

Replace these with fuses of the same type andrating only!

ECC83 F.Q., input tube;

Replace tubes with selected sets only!

MIDI program changes 0 - 127;MIDI channels 1 - 16MIDI controller 7 (main volume), value 0-5 =Master Volume Mute,


29/34

29

Tube Map:

Tube replacement report:

1. Replaced on: _ _ _ _ _ _ _ 20 _ _ _ Replaced by: _ _ _ _ _ _ _ _ _ _ _ _ _ _

Replaced tube(s): _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Reason: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _


Replaced tube(s): _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Reason: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _


Replaced tube(s): _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Reason: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

V1 V2 V3 V4 PowerTransformer

internalMains Fuses


30/34

30

Wiring of Principal Connectors

*: AC voltage is routed to pin 1 and 2 only when button 56is set to ENGL MIDI Footcontroller.

LINE OUT BALANCED (44 & 45), XLR male connector

Pin 3:signal -

Pin 1 - or ground,depending on theposition of the switchXLR GROUND (46)

Pin 2: signal +

page: 17

MIDI IN (55), DIN connector

Pin 1 - power supplyapprox.11 volts AC *

Pin 4 - MIDI-data wirePin 5 - MIDI-data wire

Pin 2 -power supply

approx.11 volts AC *

Pin 3 - N.C.

page: 18

Stereo1/4" jack

Serial Amp Control Port (58)

+ 5 volts

Data

Ground, GND

Very important:use a stereoplug only!Connect ENGLCustom Z-9Footswitch only! page: 19

Stereo1/4" jack

Dual Footswitch (59)

CH1/CH2

Sub I/II

Ground, GND

Use a stereoplug only!

page: 20


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ON/OFFON/OFF

R

Amp

Tube

FOOTPEDAL

Z-4

Options for controlling the ENGL 570 Preamp remotely:

3. Two-way footswitch (e.g. ENGL Z-4): Connect two-wayfootswitches to the amp by plugging a stereo " cordinto jack no. 59.Functions: Ch.1 / Ch.2 (Main Channels) andSub Channel I/II Clean - Crunch and Lead I - Lead II.This means you can't activate sub channels directly,

and must first switch to the other Main Channel.As an alternative to a two-way footswitch, you can connecta MIDI switcher (the ENGL Z-11 will do nicely) to this jack (59)

to control the two switching functions.

31

3.

1. MIDI foot board (for example, the ENGL Z-12 or ENGL Z-15 pictured above): Connectthe foot board to the preamp using a standard 5-pin DIN cable. All 5 terminals of bothconnectors must be wired in a 1:1 configuration: MIDI data transmission requires two wires,and the ENGL MIDI foot board uses two more wires for purposes of power supply.This combination affords access to all of the amp's 128 MIDI presets.The Z-15 foot board also lets you control Master Volume Mute via MIDI controller.

2. ENGL Custom Z-9 Footswitch: This special foot board connects to the preampvia a stereo cord plugged into the Serial Amp Port (58) or via a 5-pin DIN cord

plugged into the MIDI IN port (55). The former option affords switching accessto channels and two special functions (for example, Hi Gainor Mega Lo Punch).In the latter setup, the Z-9 serves as a MIDI foot board that accesses

the first 10 MIDI presets.

1.

1. 2.

or

1./2. 2. 3.

GROUND LIFT

SWITCH

GROUND

FLOATED

GROUND

INPUT

AUXILIARY

SEND

FX LOOP

RETURNLEFT

RETURNRIGHT

STEREO OUTPUT

LEFTRIGHTLEVEL-20/0 dB

LEVEL RIGHTBALANCED

FREQUENCYCOMPENSATEDLINE OUTPUT

OVERLOAD GROUNDTO PIN 1

GROUNDLIFTED

LINEOUTGROUND

LEFTBALANCED

STEREO

0 dB c< appearsat the left;select the

desired MIDI Channelvia Down or Up;

press 0 to store the settingor press 9 to quit the Setup.

MIDIFootcontroller

Z-15

Cn.1 SetupWrite

Linear PositveCn. value down

Linear NegativeCn. value up

Log. PositiveCn. initial value

Log. Negativeconfirm MPN

Cn. S. I.10 msSwitch Loop 1

Cn. S .I. 20 msSwitch Loop 2

Cn. S. I. 30 msSwitch Loop 3

Cn. S. I. 50 msSwitch Loop 4

Cn.2 SetupEnd

Internal ContinuousController:

Activate MIDI ProgramDirect Access Mode;press 1 or 2 to send

controller commands;press 3 to switch between

controller default and

initial values.

MIDI ProgramBank Mode:

Active after power up;Press Up & Down

to select bank 1 - 13;press 0 to 9 to selectdesired MIDI program

no. (MPN)

Controller 1 Setup forCont. Controller 1:

Press 0 in thefirst bank (00x)

until >Cn.1< appears.Changing settings:Controller number:

Down or Up.Controller curve:

1, 2, 3, 4.Controller command

send interva:5, 6, 7 8.

Press 0 to store.

MIDI ProgramDirect Access Mode:

Press 0 in thefirst bank (00x)

until >Cn.1< appears;or

press 9 in thelast bank (12x)

until >Cn.2< appears,then press 9;

press Down or Up to

select the desired MPN;press 4 to confirmselected MPN.

AmpTechnology

Tube

R

PowerSupply

7-12 Volts AC9-15 Volts DC

300 mA

MIDIOut

Cont.Controller 1Input

Cont.Controller 2< Input

Switch Loop3 & 4

Switch Loop1 & 2 >

Switch Loop Setup:Activate MIDI ProgramDirect Access Mode;

select the desired MPN,press 4 to confirm;

set switch loop statusto on or off using

5, 6, 7, 8for the respective loop.

Press 0 to store.

Controller Setup forCont. Controller 2:

Press 9 in thelast bank (12x)

until >Cn.2.< appears;Changing settings:Controller Number:

Down or Up.Controller curve:

1, 2, 3 4.Controller command

send interval:5, 6, 7, 8.Press 0 to store.

SwitchLoop 1

SwitchLoop 2

SwitchLoop 3

SwitchLoop 4

R

AmpTechnology

Tube

CustomFootswitch

Z-9

S.A.C.:Channel 1

S.A.C.:Channel 2

S.A.C.:Channel 3

S.A.C.:Channel 4

S.A.C.:Function 1

S.A.C.:Function 2

MIDI:Patch 1/6

MIDI:Patch 2/7

MIDI:Patch 3/8

MIDI:Patch 4/9

MIDI:Patch 5/10

MIDI:Bank A/B

Power Supply7-14 Volts AC9-20 Volts DC

approx. 100 mA

MIDIOut

Serial AmpControl Out

Caution !Connect To

AmplifierOnly!

Design byHorst Langer

Setting up functions:To assign amp switching

options to Functionbuttons 1 and 2,

press Channel 1 andthe desired Function

button simultaneouslyuntil the LED flashes.

Confirm by pressing thetarget Function button.Press Channel 1, 2, 3, 4buttons (once or twice)

to select the desiredswitching feature.Press the other

Function button forabout one second

to store.

AlternativePower Supply

refer to theOperator's Manual


32/34

Noting Settings:

Sound title: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Preset: _ _ _ _ _ _ _ _ _

comment: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

32


comment: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _


comment: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _


comment: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _


comment: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

POWER

TUBE PREAMP 570

CLEANGAIN

INPUT BASS

CRUNCHVOLUME

CLEANVOLUME

MIDDLEBASSCRUNCH

GAINTREBLECRUNCH

LEAD IGAIN

LEAD IIGAIN

MIDDLE LEAD IIVOLUME

LEAD IVOLUME

ULTRA

BRIGHT

PREAMP

DEFEAT

MID

EDGE

MASTERVOLUME

TREBLECLEAN

TREBLELEAD II

TREBLELEAD I

GAIN

BOOST

NORMAL

BRIGHT

CONTOUR

ACTIVE

CLEAN

LEAD I

CRUNCH

LEAD IINOISE

GATEWRITE/

COPY

MODERN

CLASSIC

FX LOOP

ACTIVE

HI GAIN

M.L.P.

Tube

Amp

R

POWER

TUBE PREAMP 570

CLEANGAIN

INPUT BASS

CRUNCHVOLUME

CLEANVOLUME

MIDDLEBASSCRUNCH

GAINTREBLECRUNCH

LEAD IGAIN

LEAD IIGAIN


LEAD IVOLUME

ULTRA

BRIGHT

PREAMP

DEFEAT

MID

EDGE

MASTERVOLUME

TREBLECLEAN

TREBLELEAD II

TREBLELEAD I

GAIN

BOOST

NORMAL

BRIGHT

CONTOUR

ACTIVE

CLEAN

LEAD I

CRUNCH

LEAD IINOISE

GATE

WRITE/

COPY

MODERN

CLASSIC

FX LOOP

ACTIVE

HI GAIN

M.L.P.

Tube

Amp

R

POWER

TUBE PREAMP 570

CLEANGAIN

INPUT BASS

CRUNCHVOLUME

CLEANVOLUME

MIDDLEBASSCRUNCH

GAINTREBLECRUNCH

LEAD IGAIN

LEAD IIGAIN


LEAD IVOLUME

ULTRA

BRIGHTPREAMP

DEFEAT

MID

EDGE

MASTERVOLUME

TREBLECLEAN

TREBLELEAD II

TREBLELEAD I

GAIN

BOOSTNORMAL

BRIGHT

CONTOUR

ACTIVE

CLEAN

LEAD I

CRUNCH

LEAD IINOISE

GATE

WRITE/

COPY

MODERN

CLASSICFX LOOP

ACTIVE

HI GAIN

M.L.P.

Tube

Amp

R

POWER

TUBE PREAMP 570

CLEANGAIN

INPUT BASS

CRUNCHVOLUME

CLEANVOLUME

MIDDLEBASSCRUNCH

GAINTREBLECRUNCH

LEAD IGAIN

LEAD IIGAIN


LEAD IVOLUME

ULTRA

BRIGHTPREAMP

DEFEAT

MID

EDGE

MASTERVOLUME

TREBLECLEAN

TREBLELEAD II

TREBLELEAD I

GAIN

BOOSTNORMAL

BRIGHT

CONTOUR

ACTIVE

CLEAN

LEAD I

CRUNCH

LEAD IINOISE

GATE

WRITE/

COPY

MODERN

CLASSICFX LOOP

ACTIVE

HI GAIN

M.L.P.

Tube

Amp

R

POWER

TUBE PREAMP 570

CLEANGAIN

INPUT BASS

CRUNCHVOLUME

CLEANVOLUME

MIDDLEBASSCRUNCH

GAINTREBLECRUNCH

LEAD IGAIN

LEAD IIGAIN


LEAD IVOLUME

ULTRA

BRIGHT

PREAMP

DEFEAT

MID

EDGE

MASTERVOLUME

TREBLECLEAN

TREBLELEAD II

TREBLELEAD I

GAIN

BOOST

NORMAL

BRIGHT

CONTOUR

ACTIVE

CLEAN

LEAD I

CRUNCH

LEAD IINOISE

GATEWRITE/

COPY

MODERN

CLASSIC

FX LOOP

ACTIVE

HI GAIN

M.L.P.

Tube

Amp

R


33/34

36 3938 40

54

37

Typenschild

page: 20


34/34

Tube

AmpTechnology

Tube

AmpTechnology

Gertebau GmbHGermany

Internet: http://www.engl-amps.com

RR

om d e570 preamp-om1

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