The Black Panel Fender Princeton Reverb is one of the crown jewels of mid-'60s combo amps. This classic amp added a tube-driven reverb circuit to the popular Princeton student combo, and has been among the most widely used recording amps since its introduction in 1964. 12 to 15 watts of power from a pair of 6V6GT tubes can be fairly clean, or can push the 10" speaker into submission with an absolutely perfect, tight drive sound. The reverb is luscious and mates well with the tremolo circuit to bring some ambience to the sound that truly cannot be emulated with any kind of modern stomp box.