Quad Attenuator & Volume Pedal to CV Interface


Simple but handy utility module that gives you 4 attenuators. But not only that: it unlocks the possibility to control your modular with your feet!

Drive on, you crazy diamond!

Each of the channels can be connected with a stereo cable to a volume or expression pedal which will act as a voltage source and will output CV from the output!


  • 4 channel passive attenuator
  • channel A can act as a voltage source (max 9V)
  • each channel input is in fact stereo jack which can be used to connect the volume pedal to act as a CV source
  • if you use a normal mono-jack cable for the input it just acts as a standard passive attenuator
  • handmade locally by Bastl Instruments in Brno, Czech Republic

Technical details

  • 5HP width
  • PTC fuse and diode protected 10pin power connector
  • 35mm deep
  • current consumption: +12V: <25mA
  • pdf user manual download

DIY kit

You can build your own Clutch with our DIY kit (PCB +panel only, we recommend experienced users to pick these!). Go through the complete assembly guide below and make sure that you understand all the steps.