1303 Boost Pedal

The Supro 1303 Boost Pedal is a "clean" pre-amp designed to push the front end of a tube amp. It features a J-FET based pedal design that delivers up to 20db noiseless gain boost. The pedal also offers optional High Pass or Low Pass filtering to contour the sound. The boost pedal remains clean and sweet at all settings, regardless of how hard it is pushed with other pedals earlier in the chain.

The control layout includes a single Volume knob and an oversized toggle switch to select BRIGHT, FLAT, or DARK overall frequency response. The BRIGHT mode enables a 3db/octave HP (high pass) filter, useful for thinning out humbucker guitars when adding boost to increase sparkle and prevent mud. The DARK mode enables a 3db/octave LP (low pass) filter, useful for fattening up single-coil guitars when adding boost to increase warmth and prevent harshness.

Additionally, the Supro Boost offers a TRS port for expression pedal control of the VOLUME knob, effectively turning the pedal into a high-fidelity, active volume pedal with user-adjustable minimum and maximum settings. The pedal is assembled in Port Jefferson, NY, USA, featuring custom-tooled, anodized, brushed-aluminum enclosures, 9V battery or AC powered operation, rear-mounted metal jacks, easy-access side-mounted battery drawer, and studio-friendly, noiseless (click-free) true-bypass switching.

Technical Specifications:
- Frequency linear boost up to 20db
- 6db per octave High Pass Filter option
- 6db per octave Low Pass Filter option
- Expression pedal control for VOLUME
- Accepts standard 2.1mm neg. tip power supply
- Runs on 9V battery (included)
- Pedal size: 12cm x 6.5cm x 6.5cm
- Current Draw below 20mA
- Original circuit design by Thomas Elliott