Lehle Mono Volume 90, Volume Pedal, Inputs and outputs are located on the side, Ideal for pedal steel players, Equipped with a precision magnetic sensor, Doesn't include a mechanical potentiometer, Volume from -92 dB (mute) to 0 dB (unity gain), or +12 dB (boost adjustable with potentiometer), No damping of higher frequencies, No sound loss, With the help of the MIN knob, the minimum volume can be set from 0-90%, Supply voltage is rectified, filtered, stabilised and doubled to 18V, Total dynamic range of 110 dB with a Blackmer VCA, Low-friction bearings, Brake can be finely adjusted, Buffered direct-out as an output for a tuner or a second amp, Power supply via a 9V - 15V DC or oder 7 - 12 V AC (coaxial power connector - polarity is not relevant, corresponding power suppy available under Article Nr #409939# (not included, must be ordered separately)