Vertex Ultraphonix Overdrive — Vertex's all-analog take on a Dumble ODS. Three controls: Volume, Filter and Gain. It behaves like an amp rather than a fuzz box: it cleans up when you roll the guitar volume back and stays articulate when you lean on it.

Works perfectly. All three knobs, footswitch, true bypass.

Cosmetically used. The black enclosure has handling marks and there is velcro on the bottom. Nothing dented or cracked.

Runs on a standard 9V DC center-negative supply.

No box or manual.

No power supply included.