Quote:
Originally Posted by HOT TUBES 70
recheck your bias , some times amp techs talk about " bias drift " as the tubes burn in
they tend to sound " not right on ", also tone caps are famous for going south, it could
be many things , i know that amp well and they sound great when you spend some time
on them.
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+1
And fwiw, even relatively new valves can go bad quickly so be sure to check the tubes.
I'm also not sure how Tung Sol's would do in those amps. I'd spend a few dollars and check out a few others such as Penta's, JJ's and EHX in different positions to see how that helps.
As for the power section I recommend the SED Winged C's or Mullard EL-34's. I never did like EHX power tubes in my Jubilee amps. They made the tone disappear to my ears.