This is a compressor from Chase Bliss Audio. It's a modulation effect that utilizes the compressor function, allowing for diverse applications depending on your ideas. It also excels as a harmonic tremolo and ring modulator. Works perfectly, complete with the original box. Chase Bliss's CLEAN effect offers a wide range of sounds with MIDI compatibility. - Brand: Chase Bliss - Model Name: CLEAN - Color: White - Input/Output Terminals: MIDI, OUT (Stereo) Thank you for looking.