Hear Your Tone, Not Your Volume Pedal Instead of relying on a mechanical potentiometer like most volume pedals, the Lehle Stereo Volume Pedal employs a magnetically controlled Blackmer VCA to give you amazingly precise control over your volume without any worries about wear and tear. Designed with live performance in mind, the Stereo Volume treats your signal with maximum integrity ? your tone comes through exactly as intended across the entire range of the pedals sweep. And its perfect for dual amplifier rigs, with the ability to split a mono signal to two separate outputs. If a volume pedal is a critical component of your guitar rig, then youll definitely appreciate the precise operation and amazing durability the Lehle Stereo Volume offers.Magnetically controlled VCA for long-term reliability The Lehle Stereo Volume volume pedal uses a magnetic field to control your signal level ? that means there isnt a mechanical potentiometer