Ada MP-1-CHANNEL - POWERING UP THE MP-1-CHANNEL

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TheADAMP‐1‐CHANNELisdesignedfortheguitaristwhowantstheauthentictoneofthe
renownedMP‐1MIDITUBEPREAMPinaneffectspedalenclosure.TheMP‐1‐CHANNELuses
thesamevacuumtubedesignoftherack‐mountedMP‐1PREAMPofthelate1980sto
accomplish
thisgoal.Two12AX7vacuumtubescreatethetone–VOICEDasCLEANand
DISTORTIONforsmoothwarmthorsparklingdefinitiontoresponsiveoverdriveandhigh‐gain
distortion.ThesignalisthenpassedthroughtheADAtonestackforshapingandharmonic
emphasis.

TheMP‐1‐CHANNELpedalhasa
TrueBypassfootswitchandrunsoffa standard12‐voltAC
adapter.InsidetheMP‐1‐CHANNELthevoltageisincreasedto270voltstoobtainthebest
performancepossiblefromthe12AX7s.UnliketheoriginalMP‐1,theMP‐1‐CHANNELisnot
MIDIprogrammable,notstereoand
hasnochoruseffect.TheMP‐1‐CHANNELisasingle
channel,monopedal.

POWERINGUP
ThebestwaytopoweruptheMP‐1‐CHANNEListosetthePOWERswitchoff,plugintheAC
adapter(ADApartnumber240005)orpedalboardpowersupply(12Vat800mA),andturnon
thepowersupply,butnottheMP‐1‐CHANNEL.ThensettheMP‐1
‐CHANNELPOWERswitch
on.Thevacuumtubesrequirealotofcurrenttostayhot,andsomepowersuppliescannot
providethis.WerecommendtheADAACadapterbecausesomegenericACadapterswill
“shutdown”forprotectionandcausetheMP‐1‐CHANNELPOWERLEDtoflashafew
times
beforestayingon.Thisdoesnotcauseanydamage,butcanbeabitannoying.Afterthetubes
warmup,theguitarsignalispassedtotheOUTPUTjack.
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