The Surfy Industries - SurfyTrem Deluxe is an all analog pedal delivering that classic "vibrato" channel sound. Based on bias modulation the Brown setting brings classic 1961-62 Fender Showman brown-panel harmonic tremolo, riding the frequency wave, moving up and down, alternating highs and lows. Often compared to the effect of a rotating speaker in a Leslie system, this is a highly coveted effect. The Black setting delivers '64 Fender black-panels sounds, known as "amplitude modulation," this effect brings more of an on/off sound, and the SurfyTrem Deluxe nails the vintage nuance.

The standout feature is the inclusion of a Volume control for adjusting the signal level, to dial in just the right amount of tremolo into your sound. Stereo in/out and 9-12V power