Up for sale is a McCaffrey Audio Reactor Boost Compressor, serial number 0032. This is a very low-production-number unit from a small-batch American boutique builder out of Wisconsin.

Condition is excellent. The pedal shows minimal cosmetic wear on the bottom and is fully functional.

Comes complete with everything from the original unboxing experience, which makes this a collector-worthy listing:

Original box with serial number label, the iconic McCaffrey Audio wax-sealed leather pouch, the personalized hand-signed letter from builder Ryan J. McCaffrey, and the original "Thank You" card. "Pure Organic Tone" as the man himself says.

The Reactor is a boost and compressor in one compact footprint, with three controls: Level, Fusion (compression amount), and Critical Mass (a 3-position toggle that tunes the bass response for single coil, modern humbucker, or vintage humbucker). Neutrik jacks, 9V standard negative-center power. Made in the USA.

Retail new: $160. Selling because it doesn't fit the current rig direction.

Ships well-packed, USPS Priority or UPS.