Originally Posted by Glod
Hmm - then we have to throw in the Supra-X and the Maestro Aurum too, as models I suppose. OK, for now then
The Supra-X was a one off. I was kidding around.
I am sure he could build another one though.
Guess what .... there is another new tube type running in my Supra right now.
This tube has an octal base and the same pin out as a 6sn7. The tube parameters are different and really require a different bias etc... for optimum performance. However, so far this tube sounds very good even in this handicapped state.
This tube is sort of a "super 6sn7". The plate dissipation is 10 watts per triode section vs about 3 watts per section for a 6sn7gt. The amp sounds faster and the soundstage is both HUGE and extremely natural sounding. The bass is good, but not especially powerful or full sounding, and here is where the tube being optimized for the circuit would probably improve the performance considerably. This tube has a large heater current draw so you need atleast a Supra level transformer. I will let you know what I think of this tube after a couple weeks of testing.
I may send one of my amps in and have Mikhail optimize the circuit and see how much performance this tube can give. I was reluctant to do so until I had an idea if the tube could improve on the 6/12sn7 and 7/14n7's. After listening to the amp the last couple hours I am pretty sure this tube can. High power doesnt always equate to better sound but this tube seems to have both.