Used Hermida Audio Zendrive. This is one incredible pedal! These were designed from the ground up by former NASA designer Alfonso Hermida and are designed to emulate the tone of a Dumble amplifier. The gain ranges from super light overdrive up to a mild distortion. The volume, gain and tone knobs basically do exactly what you expect, while the voice knob allows you to dial in extra high-mids, definition and cut. You can pull a whole bunch of tasty, creamy, touch-sensitive tones out of this one with very little effort, giving you the rich harmonics of a high-gain drive with the definition and clarity of a clean boost. Truly great pedal.

Model: Hermida Audio Zendrive (Lovepedal reissue)
Made in: USA
Type: light to mid gain overdrive/distortion
Power: regular 9v supply
Equivalent new street price (approx): $309
Mods: velcro attached
Accessories: original box and manual
Condition notes: minor marks only, excellent condition

Here's a handy HD video demo to give you the idea!