Quad Line Output & Headphones Amp


Four high-quality line outputs for your modular in a compact format. With line-level clipping, the indication is handy for both recording and live.

Great Both for Recording and Live Jamming

Headphone output can be quickly switched to listen to one of the stereo channels. It is also great for jamming because you can separately create a sound on your headphones and then flip a switch to mix it into the final mix directly with this module. Ciao! is a handy output module with independent volume control over each stereo channel.


  • total 4 line outputs
  • 2 balanced outputs (left and right)
  • 1 stereo output (could be used as second headphone output in an emergency)
  • headphone output
  • switch to select what plays in the headphones
  • switch to mix channel A to channel B
  • internal normalization allowing mono 2 stereo conversion
  • line-level clipping indication per channel
  • volume control per stereo channel
  • front panel from aluminium or oak wood with custom knobs
  • handmade locally by Bastl Instruments in Brno, Czech Republic

Technical details

  • 5HP width
  • PTC fuse and diode protected 10-pin power connector
  • 55 mm deep
  • current consumption: +12V: <40 mA, -12V: <40 mA


  • user manual pdf
  • 日本 (nihon) manual pdf  – translated by our friends at Umbrella