Keeley Synth-1 Reverse Attack Fuzz Wave Generator

The Synth-1 allows you to create fuzzed-out synth waves! Use the Filter and Blend controls to mix your guitar with the fuzz from the synth. Go from churning slow-gear reverse swells to sounding like a light saber.


The Keeley Synth-1 is a guitar-triggered, single-note wave generator. You control the tone of the wave with the Filter Control. The lead-in time or swell of the note is controlled with the Attack knob. Then use the Blend control to remove the natural tone from your guitar as you slide through synth-sounding fuzz waves. Use an expression pedal to control the Filter, and now you have Wah-Wah-like control of the Synth-1.



  • Synth Wave Generator – Create fuzzed-out, single note synth sounds

  • Reverse Attack – Volume Swell Effect – put your guitar in slow gear!

  • Chaos Switch – change dimensional triggering and octaves and stuff

  • Filter – shape the EQ and tone of your fuzz wave

  • Wave Selector – change wave modes on the fly with your foot!

  • Control the Blend of your natural guitar and the wave generator

  • Side Mount Expression Jack for TRS control of the Filter

  • Top Mounted Jacks, True-Bypass

  • Designed and Made in the USA



From unnatural fuzz noises to pseudo-harmonic, random glitchy counterpoint, the Keeley Synth-1 makes you the Master of the Art of Noise.