Posted by metasonix [ 68.126.151.108 ] on June 15, 2004 at 01:43:51:
In Reply to: Re: williamson amp posted by Manualblock on June 13, 2004 at 16:55:10:
OK, if you must:
6SN7s
about 10-15 dB
Fixed (negative grid) bias
I would stick to the classic circuit. Don't mess with it
unless you are familiar with designing differential
amplifier stages.
807s are great. The cheap Chinese ones aren't, but NOS
are still relatively easy to find. 6550s or KT88s
are even better--more gain, tougher screen grid.