Shuguang Treasure 300B-Z in Audio Note amplifiers?

Thanks, David. If you have the high gain version of the Quest amps, what 6SN7 are you using in them?

FWIW, I don't find my Conquest Silver amps with the stock 300B tubes to be particularly warm. In fact, they are a little more tipped up than I expected.

I'm using RCA 5692 red base tubes, which I have found rounds out the sound to my liking.