PieJam is a simple audio mixer for Raspberry Pi. It provides a graphical touch interface which should be used with the official 7” Raspberry Pi touchscreen. It needs some external audio interface, most USB based ones should work.

This documentation is work in progress and should give a brief overview of the functionality.


  • Dynamic configuration of inputs and outputs

  • Panning, stereo balance and volume controls

  • Mute and solo

  • Flexible routing between mixer channels

  • Fx chain per mixer channel

  • Support for LADSPA plugins

  • Parameter control through MIDI CC

User interface

Audio device settings


Audio input settings


Audio output settings


MIDI input settings


Mixer Perform View


Mixer Edit View


Fx chain


Fx browser


MIDI Learn