- controls the volume of the dry (uneffected) signal
- controls the volume of a signal one octave below the input signal
This popular bass effect adds a deep note one octave below the note you're playing for a huge, stadium-filling tone. Compare this to any unit on the market and you'll be pleasantly surprised. The MXR tracks instantly with what you're playing, and continues to synthesize useful sub tones for lower fundamentals, where other pedals give up.