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. Go through the complete assembly guide below and make sure that you understand all the steps.