Uberschall Rev. 2 - Retubed Preamp, But Not Quite Happy

  • Thread starter Thread starter russellconner
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Hi ,Darek from Poland. I have a Bogner Überschall rev. blue [No serial number 095114]. Question about the stock preamp tubes? which are assembled by you? shungung 12AX7 or B? Maybe Sovtek 12AX7 WA? WB or WC? My amp has Sovtek WC but it's possible that the previous owner is there interceded. One more question, which preamp tubes which have a function? [Standing behind the amp, starting from the left V1 [clean channel? ], V2, V3, V4 then the second row v5 [phase inverter??] And v6 effects loop??
 
Bogner uses all Chinese 9th B preamp tubes and JJ EL34 tubes as stock. Anything other than that has been added by somebody else.
 
which preamp tubes which have a function? V1 [clean channel? ], V2 ?? , V3 ??, V4 ?? then the second row v5 [phase inverter??] And v6 effects loop??

Chinese 9th B = Sungung 12ax7 B ?
 
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