Question for Van Alstine hybrid amp owners


His recent FET-valve hybrid amps employ 12AT7 tubes for the voltage gain stage. My experience with 12AT7 tubes (even NOS) in Llano Trinity amps has been that they are a bit rough in the upper mids, and not as "musical" as 12AX7 or 6922 types. But of course that could just be the Llano context. Do any VA amp owners have comments on this concern about his use of 12AT7?
ral

Showing 1 response by ral

Wow - thanks for that detailed report, Mryder. It would be nice to see more reports like this for other tube gear (especially hybrid preamps/amps) on Audiogon.

Since I first posted my question, I have experienced essentially the same results as you for several of the tubes mentioned above. In the end I went back to the stock JJ Tesla because they seem the least analytical, and just have a warm full sound. (Can't argue with their price/availability either!).