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Page 4

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CONTROLS

LiketheMP‐1,theMP‐1‐CHANNELhastwocontrols,OD1andOD2,tosetthedrivelevelofthe

firsttwostagesandthefollowingstages3and4.Withthisflexibility,theguitaristcannotonly

settheamountofdistortion,butcontrolthelevelofevenand

oddharmonicdistortion.Even

harmonicsaregeneratedbyclippingonesideoftheguitarsignalinsteadofboththetopand

bottomsidesofthesignalforoddharmonicdistortion.Evenharmonicsaresmoothand

hollow,whileoddharmonicsarecrunchy,harsh and,withpropersettingofthetonestack,

“hairy.”Trysomeofthesettingsshownbelowtohelpgetyoufamiliarwithhowthecontrols

work.



ThereisoneINPUTjackandoneOUTPUTjack.KeepinmindthattheMP‐1‐CHANNELisa

stompboxandrunsatINSTRUMENTlevels,notLINElevels.



TheVOICINGswitch

setsthe12AX7gainanddriveequalizationforCLEANandDISTORTION

biasing.TheMASTERcontrolsetsthelevelofthesignalcomingfromthefourgainstagesof

the12AX7s.(Thereare2stagesper12AX7vacuumtube.)



Thetonestack(BASS,MID,TREBLEandPRESENCE)isanactivefilter

whichmeansitcancut

ANDboostthesignal.Whenallthetonestackcontrolsaresetto12:30o’clock,thefrequency

responseis“flat”–noboostorcut.ThereisadifferencebetweentheMIDcontrolsofthe

originalMP‐1andtheMP‐1‐CHANNEL.ADAincreased

therangeoftheMIDcontrolintheMP‐

1‐CHANNELsomodernguitarplayerscangetaradical“scoop”ofthemidfrequencies.The

amountofMIDboosthasalsobeenincreasedsoplayerscangeta“low‐powercombowitha

10‐inchspeaker”soundforfuzzycompingand

soloing.

Ada MP-1-CHANNEL User Manual

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