I have a 94 twin amp, the one with 2 inputs and no tremolo. This model is confusing, since there are several iterations of this amp. I'm presently trying the standard Fender reverb pan the 4AB3C1b. it seems to work ok, but the sound is different, good reverb but fast decay. When used in my 74 silver faced twin it sound just right, it has a much nicer reverb and decay. The Part number in the service manual for the 94 Twin Amp shows P/N 064063. I made a few calls on this part number, but no one was sure which pan I'm looking for any ideas, thanks in advance.