I live in italy and changed stock st70 power trasformer with Triode PA521 power transformer. I changed also the quad filter cap with the new dynakitparts 30/20/20/20 uF @ 550/600 VDC FP (twist-lock) can style (1) 30 uF @ 550 VDC (600V) Surge (3) 20 uF @ 550 VDC (600V) Surge. High Quality "Low ESR" high voltage caps mounted in a twist-lock style can.
I mount also a stock PC-3 board with 6gh8 and a matched quad of NOS Telefunken.
I would like keep this rectifier instead of GZ34 Tungsram because i tried it (a GE 5U4GB) and i like how it sound (bass better controlled and scene with better defined contours).
Can i mount now for ever a 5U4GB rectifier or there may be some problem?
I read the transformer's specification and it support tube like this and with that capacitor the surge should be ok too... isn't it?
Last edited by Tiziano73 on Wed Oct 10, 2012 2:29 pm; edited 1 time in total