Negative feedback, voltage and output impedance

Sean,

The only amp I recall with user adjustable feedback is the Mesa Baron. I believe it is adjustable between 0 and 8db in 4 increments.

This is an amp I am considering purchasing, btw. It is a very flexible (can also switch between all triode and all pentode in 1/3 increments) dual mono amp and may be what I need in order to determine what works best with my ESLs (other than OTLs of course).

Kevin Hayes has also offered to make some mods to a PA100 for me which is another option.

Thanks.

Mike

All,

Thanks for the replies.

If I understand this correctly, if I want to buy a high power (voltage for ESLs) tube amp with low output impedance and low or no negative feedback, then I need to look at OTLs, correct?

Thanks.

Mike