Supro Tremelo

 The SUPRO 1310 Tremolo pedal is an analog effect that recreates two of the most popular vacuum tube based modulation found in American amplifiers of the 60’s.
The Supro Tremolo AMPLITUDE / HARMONIC switch allows the musician to choose between these distinctly different, vintage effects. AMPLITUDE mode provides the traditional swampy, tremolo sounds generated by bias modulating the power tubes in the original Supro amps.
HARMONIC mode provides the psychedelic tones of Leo Fender’s brownface and blonde amps from the early 60’s. Leo’s unique "harmonic tremolo" effect is implemented within the output stage of the pedal to create an "amp-like" modulation experience.

The Supro Tremolo pedal features pre-amp and power amp sections, with an actual output transformer deployed to recreate the magnetic saturation and coloration of the original vacuum tube based effects found in these historic amps. Along with the standard modulation controls for speed and depth, the Supro Tremolo also features a gain circuit that allows the musician to overdrive the output stage, right where the modulation effects are created. The GAIN control sets the amount of “preamp” gain in the pedal. As you turn the gain up, the “power amp” circuit will gradually be pushed into overdrive. This control gives you a wide range of sounds from clean to grind, with magnetic saturation occurring as the power section is pushed into overdrive. As you crank up the gain, the overall output level of the Supro Tremolo is automatically compensated in order to maintain consistent signal level. This allows the musician to use the GAIN control to alter the texture of the modulation effects without an overwhelming increase in audio output level.

This Supro pedal features a TRS port for expression pedal control of the Speed knob. The external Speed knob sets the maximum value, while an internal trimmer sets the minimum Gain.

Supro stompboxes are hand-assembled in Port Jefferson, NY, USA. These state-of-the-art pedals feature custom-tooled, anodized, brushed-aluminum enclosures, 9V battery or AC-powered operation, rear-mounted metal jacks, easy-access side-mounted battery drawer, noiseless (click-free) true-bypass switching and unique, expression pedal functionality.