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Whoa,

Posted by jihad on October 10, 2010 at 13:12:24:
there is no magic formula. I just mentioned one particular topology I liked.

I'm familar with all those circuits you mentioned. The circuit I'm using has added CCS to the input long tailed pair and a complementary CCS to the VA stage. The bias generator is much better than the one in the Hitachi design. It's simple, basic and has good sound, kinda like Nelson's F5 is simple yet sounds soooo good.

Vertical MOSFETs biased high(er) do much better in practice than their reputation would suggest. I agree laterals sound much better. I had some IRF640 and IRF9640s on hand at the time, what can I say. Next build I'll use some 2sk1058/2SJ162 or equiv.

I like the McCormack DNA-1 Deluxe alot (the real McCormack, not the CJ era stuff). I beleive that's jfet/mosfet/bipolar, so there you go, there is no one solution to everyeone's problem.