An active, wear-free expression pedal equipped with a precise magnetic sensor. Known from the Lehle Volume pedals, this sensor uses the Hall effect, named after Edwin Hall, to measure the strength of magnetic fields. In the Lehle Dual Expression the Hall sensor is accurately calibrated to the built-in magnet and the control range of the pedal – where the pedal moves only the magnet, whose distance is measured by the Hall sensor.

Two digital potentiometers, working with analogue voltages, are used for the precise and reliable generation of the expression data. Both outputs can control nearly all common devices with expression inputs from 5k to 100k, regardless if TS, TRS or RTS – the polarity can be switched and stored using the soft-push buttons. Alternatively, the 10k output can be set to work as a latching or momentary switch, if the pedal is pushed in fully toe position. Via the USB socket you can send MIDI data to a computer, in order to control midi compatible software.