Charles1dad 5-14-2016
In one amplifier or system to a specific individual the Tung Sol could be clearly superior. Now placed in another system and different listener the Treasure KT 88 would be declared equal or superior sounding. I find that proclamations are rarely universal in audio, simply too many variables at play. If you find a terrific fit for your system that’s a beautiful thing, but extrapolation is difficult.
+1. Very well said, Charles.
And I would expect that to be particularly true with regard to extrapolations from the OP’s MC275 Mk IV. My impression is that all of the various incarnations of the MC275 have considerably lower output impedance, considerably higher damping factor, and use greater amounts of feedback than the great majority of other high quality tube amplifiers. There are undoubtedly many other differences between those amps and most other tube amps that could also invalidate extrapolation of the performance of a given output tube in those designs to performance in other designs. Not to mention variables involving the listener, the speakers, and the rest of the system, as you said.
Best regards,
-- Al
