MXR Bass Envelope Filter M82Bass Envelope Filter Info: The Bass Envelope Filter delivers classic, analog, envelope filter sounds in an easy to use and compact pedal designed specifically for bass. Separate Dry and Effect controls let you dial in the perfect mix of effected and direct signals, so you can bring the funk without losing the low end. Its wide range of filter tones can be shaped with the Decay and Q controls, and a simple twist of the Sensitivity knob can tailor the