unico cd


2007-04-11 9:44 am
Hi, I need some info concerning the unico cd player from unison research. In fact I need to alter the gain, but, until know i was not able to read the VA stage from the PCB. The va stage is tube ECC82 based (differential) after a passive filter. Anyway a hint or a schematic or anything that can help it will most welcome, If anyone has a came a cross this player