I've had one of these (non-eq version) since the early 90's as my "throw and go" jamming amp...open mics, impromptu jam sessions, rehearsals, etc. Recently it seemed somewhat lifeless (no crispness to the highs and loose, undefined lows...much more boxy sounding than it used to be) to me so I figured it was time for a retube. Since its fixed bias, I've always just used Mesa EL84 and 12AX7 replacements with no issues. This time, the amp seems even more lifeless than it did before retubing.
What tubes does Mesa re-label and have they changed them in recent years? I've been retubing with stock that I bought back in the 90's but finally ran out and purchased new ones.
Any recommendations that might wake this thing back up?
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