The outboard spring reverb unit is with surf guitar and many other iconic guitar sounds from the sixties. Its distinctiveness, compared to the internal spring reverb found in most Fender-style amps, lies in its placement in front of amp, which causes the reverb signal to distort and intensify beyond what the internal circuit could achieve.

Additionally, featured a Dwell knob, which controlled the intensity of the springs' response to the guitar signal, and a Tone knob that allowed greater control over the reverb sound. Function as a tube preamp, it also colored the sound entering the amp. These characteristics to a unique reverb sound that is difficult to replicate At Catalin, we endeavored to capture this sound and believe we have succeeded.

 addition to the classic three-knob control configuration of the original we have incorporated-quality discrete preamp, adjustable via the Volume knob, providing a substantial clean when desired.