Short of catastrophic failures, tubes that are past their prime can sound “tired” or lackluster; you start noticing treble doesn’t have the life and sparkle you were used to. The best approach is to buy a new set of tubes before they are needed, then swap the new ones in periodically to see how they compare to the old set. If you don’t notice an improvement, put the old set back in.
When it sounds like a tube amp needs rejuvenating,
how can you determine whether the power tubes or the output tubes need to be replaced ? Or both ?
My amp is the VAC Phi 300 running 4 Psvane CV-181's up front and two quads of Shuguang Black Treasure KT-88's behind them.
Thanks -
-john
My amp is the VAC Phi 300 running 4 Psvane CV-181's up front and two quads of Shuguang Black Treasure KT-88's behind them.
Thanks -
-john