The silver Empress Bass Compressor includes features and controls normally only seen in high-end studio equipment, such an input and gain eduction metering, independent attack and release controls, a mix knob for parallel compression and an external sidechain insert. The Bass Compressor pedal also adds a fully variable sidechain high pass filter and a two position ‘tone + colour’ circuit which adds gentle tone sculpting and harmonic distortion, giving your bass some delicious character.