Hear Your Tone, Not Your Volume Pedal Instead of relying on a mechanical potentiometer like most volume pedals, the Lehle Mono Volume 90 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 pedal steel players in mind, the Mono Volume 90 treats your signal with maximum integrity — your tone comes through exactly as intended across the entire range of the pedal's sweep. And it's easy to fine-tune the pedal's response, with adjustable minimum and maximum levels (with up to 12dB boost too!). If a volume pedal is a critical component of your guitar rig, then you'll definitely appreciate the precise operation and amazing durability the Lehle Mono Volume 90 offers.Magnetically controlled VCA for long-term reliability The Lehle Mono Volume 90 volume pedal uses a magnetic field to control your signal level —