Have a friends 3000A that he wanted me to check out. Cleaned and dexoit'd the controls. I had one of these before and knew there was a mod required to save speakers. This one I believe does not have the mod. ( Need to look again) Upon powering up, it worked and sounded good. I checked the DC volts at the speakers and it was 4 volts. Pretty sure that is not right, also setting the volume control at zero, still results in sound. Any advice would be appreciated, I think another post talked about someone developing a mod board but don't know where to get it. Think I should tell my friend to send it to someone who knows more.