Comming from tube pre amps (bass guitar), I'm taking the plunge into tube power amps. One question that rises after reading and studying multiple schematics is the driver configuration used to drive the power pentodes, KT88 PP or PPP ultra linear in my case. I'd expect to see more CF's due to the low output impedance advantages, yet I mostly see 6SN7 in CC configuration. Can someone elaborate on the how and why for CC vs. CF? The drivers themselves will be provided with signal from a 12AX7 cathodyne with 56K plate and cathode resistors, comming from a 32dB pre amp. Any insight is very welcome.
Thanks!
Thanks!