Posted by manualblock [ 69.112.43.172 ] on November 22, 2005 at 20:28:08:
Nelson Pass has a real nice SS class A amp design in this months issue.
It is an old John Lindsey Hood design using "three gain stages with the middle stage consisting of a NPN transistor used as a phase splitter driving the positive half of the output stage and the negative half with symmetric signals of opposite phase." (NP)
Real simple looking but very high performance according to Nelson.
Which brings up a point I wish to make concerning older,( from the 60's) transistor amps in that they sometimes have a real nice presentation if you don't push them too hard.
I use an old Fisher that I swear sounds like a tube amp. Nice and smooth. So; does anyone know if that is a consequence of design or parts choices?
Another thing nice is the very last sentence of the article he says he will no longer critique the sound of his designs; you must build it and see for yourself. Thats a good position to take.
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