@Hgeifman, @Crubio - Thank you so much. Those recommendations are very useful!
I was planning on calling my friend today. I don't think he had to replace the tubes - but I am not sure. I know he sent the amp in to Jolida at least once when he owned it, but I am not sure what the issue was that time.
@zd542 - the problem seems more exacerbated in one channel - but overall, the problem seems to be across both channels as the overall power output seems to have dropped.
@Timo62 - if this was a fuse problem, would the amp be working at all? I see all the EL-34 power tubes light up and glow and that means the heater circuits are working.
I was planning on calling my friend today. I don't think he had to replace the tubes - but I am not sure. I know he sent the amp in to Jolida at least once when he owned it, but I am not sure what the issue was that time.
@zd542 - the problem seems more exacerbated in one channel - but overall, the problem seems to be across both channels as the overall power output seems to have dropped.
@Timo62 - if this was a fuse problem, would the amp be working at all? I see all the EL-34 power tubes light up and glow and that means the heater circuits are working.