Does anyone actually know what the difference is, if any, between a FENDER GT-12AX7R and a FENDER GT-ECC83S.
I got a brand new Fender Bassbreaker 30R in the shop for repair and it has installed GT-ECC83S at position V1 and V2 (input gain, tone buffer and effects drive) and GT-12AX7R at t V3 (phase splitter).
Asked Fender directly and could not get an answer there either?
Anyone out there got any insights?
Thanks