... Yeah... I think I'm gonna have to pass on the Telefunkens... As cool as that potentially might be... Uh... No.
I hear ya on the mod factor... Seems like there is a never ending supply of overpriced parts that could be replaced to help get ya closer to building the perfect beast...
I'm not sure on whether to go w/ KT77's or just throw in a set of EL34's... I know w/ EL34's Marshall's recommended bias is at 90mV, but I'm not sure what I would set the bias at w/ the KT77's... I have been investigating, and it looks like in either case I would need to install a complete set of four valves to get the bias set correctly, then, if I desire... I could throw the YJ's back in...
... I guess this thread has made at least half the circle, eh? Started out talking about pre-amp tubes, and now... Power amp tubes, chokes, and tranny's... Hmm..