The Keeley Bassist, also known as the Keeley Bassist Limiting Amplifier, is a compression pedal that pulls in technology typically reserved for rack units, particularly the Corp 4320 chip. Control your sound with the Compression, Threshold, and Gain knobs for the ultimate in bass compression. Its high-fidelity, VCA-based system can handle massive signals without compromising your bass's tone. Think of it as a rackmount limiter squashed into a pedal at your feet.