音響制作工藝 DIY Audio Craft

Any comments on this circuit. I love it when I found it. I would modify it for 6SN7 or 12AU7

Hello Chung,

the circuit is nice !! I think using a 12AU7 as a driver wont be as good as 6BM8 wired in triode mode,
a. the output impedance of the 6BM8 will be a small fraction of a 12AU7
b. the input impedance of the driver transformer I think will be too low for 12AU7

BUT !! as I dont know the specs of the traffo I cant really say

best of luck


Joe

I do know 6BM8 wired in triode mode is superb sound

also I think the multi feedback path will not work as is with 12AU7
you will probably need redesign that whole section


Joe