Ada MP-1-CHANNEL - MP-1-CHANNEL CONTROLS; Drive and Gain Controls; Tone Stack and Master Controls

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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.
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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.)
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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.