2 Epiphone Valve Jr.•Mercury Upgrade Kit
ThisprojectanditsdocumentationistheresultoftechnicalinvestigationsmadebytheengineeringstaffofMercury Magnetics.Thedisclosureoftheinformationhereinmaypertaintoproprietaryrightsand
thefurnishingofthesedocumentsdoesnotconstituteanexpresedorimpliedlicensetousesuchmaterials.
Ifyoudonotknowhowtoreadaschematic,westronglyrecommend
thatyoutakethisprojecttoaqualiedtechnicianforinstallation.
AllMercury Magneticsproductsare100%handmadebyusinCalifornia,USA.
Copyright©2006–2011byMercury Magnetics.AllRightsReserved.Mercury Magnetics,Multi-Choke,Mini-Choke
and“TheHeart&SoulofYourAmp”sloganaretrademarkslicencedtoMercury Magnetics.Axiom,APSandToneCloneare
registeredtrademarkslicensedtoMercury Magnetics.EpiphoneandValveJr.aretrademarksofGibsonGuitarCorp.Mercury
MagneticsisnotafliatedwithwithGibsonGuitarCorp.Thisprojectanditsdocumentationistheresultoftechnicalinvestigations
madebytheengineeringstaffofMercury Magnetics.Thedisclosureoftheinformationhereinmaypertaintoproprietaryrights
andthefurnishingofthesedocumentsdoesnotconstituteanexpresedorimpliedlicensetousesuchmaterials.
Mercury MagneticsproductsareUL(UnderwritersLaboratoriesInc.)recognizedcomponentsfortheUSAandCanada.OBJY2
componentsystems,electricalinsulation,E120568.ULRecognition,class130(b)–Class200(n).OBJY8componentsystems,
electricalinsulation,certiedforCanada,class130(b)–Class200(n).
Mercury MagneticstransformersandotherproductsareincompliancewiththeEuropeanUnionRoHSDirective2020/95/ECwith
respecttothefollowingsubstances:lead(Pb),mercury(Hg),cadmium(Cd,hexavalentchromium(CR(VI)),polybrominatedbiphenyls
(PBB),andpolybrominateddiphenylethers(PBDE).
Attention: Modifying your Epiphone Valve Jr. amp voids the factory warranty!
Circuitry modications and design by
Sergio Hamernik and Alan Cyr
Manual written and designed by
Paul H. Smith
9167IndependenceAve.
Chatsworth,CA91311
(818)998-7791•FAX:(818)998-7835
Skype:paul.patroneteorpatrick.selfridge
www.MercuryMagnetics.com
info@MercuryMagnetics.com
ThismanualisfortheValveJr.
PCB VERSION 2 or 3 ONLY!
(Pleaseseetheidenticationnotesinthis
manualtodeterminewhichversionyouhave.)