Want classic analog envelope filtering in a pedalboard-friendly pedal You need the MXR Bass Envelope Filter! Dial in the perfect amount of filtering through without sacrificing your low end with the Dry and Effect controls. Dial in the right amount of sensitivity for your level of attack and you're off and running! Plus, the Bass Envelope Filter boasts true bypass, so when you bypass the pedal your tone stays intact. It's time to get your funk on with the Bass Envelope Filter!