This is a used Trace Elliot SMX Dual Compressor cosmetically in fair condition and is fully functional. No box or power supply. Batteries are included. Will run off a 18v 2.5mm barrel adapter (not standard 2.1mm Boss size) or 2 9v batteries.

"Trace Elliot SMX: This old, long out of production pedal has a cult following among bassists. It is a dual-band comp, which was very rare at the time it was produced. Unusual features include: separate knobs to control the amount of compression for the high and low sides of the crossover; a "tilting" EQ knob that emphasizes either the highs or the lows; and a second footswitch to bypass only the high band of the compression (meaning only the lows would get compressed)."