Lehle Mono Volume Pedal

The Lehle Mono Volume is a wear-free volume pedal that is equipped with a very precise magnetic sensor. This sensor utilises the Hall effect, named after Edwin Hall, to measure the strength of magnetic fields. In the Lehle Mono Volume, the German-made Hall sensor is precisely calibrated to the built-in magnet and the pedal's control travel. The pedal only moves the magnet; its distance is measured by the reverb sensor, which then controls a VCA.

The high-quality Blackmer® VCA (=Voltage Controlled Amplifier) from the USA replaces the mechanical potentiometer here. The principle of the voltage-controlled amplifier is based on the fact that the amplification is varied by the control voltage coming from the Hall sensor. This method enables much more precise operation than the usual mechanical potentiometers or optical sensors of conventional volume pedals, and also eliminates the noise typical of potentiometers and the cumbersome adjustment process. The Lehle Mono Volume transmits the full sound spectrum of the connected instrument over the entire control range. The input and output impedance always remains the same, so there is no treble attenuation as with a potentiometer. Internally, the input voltage of the pedal is rectified, filtered, stabilised and then doubled to 18 volts behind the power supply socket. This makes it very level-resistant and achieves an overall dynamic range of 110 dB.

The volume control of the Lehle Mono Volume ranges from -92 dB to 0 dB - i.e. from practically silent to equally loud. A potentiometer can be used to set a gain of approx. +10 dB.

The Lehle Mono Volume runs mechanically extremely smoothly and evenly, as it is equipped with low-friction plain bearings made of a high-performance polymer and there is no mechanical transmission of the pedal to other components. The pedal's movement can be adjusted very precisely using an adjusting screw.

The Lehle Mono Volume also has a buffered direct out. Everything from a tuner, DAW to a second amp can be supplied here without affecting the sound.