ABC - Black PCB
ABC - Black PCB
ABC - Black PCB

ABC - Black

Bastl Instruments

6 channel mixer

ABC is a relatively simple 6 channel signal mixer. It has 6 inputs – A,B,C,D,E, and F – and two outputs. The A+B+C output is mixed in to the D+E+F output if nothing is inserted in the A+B+C jack.

The ABC mixer is designed to mix audio signals, but can be modified to mix CV signals instead. There are 6 solder jumpers on the back side, which can be connected to turn the ABC mix into a CV mixer.

See the product page for instructions/downloadable content.

- More details in the Description below. -

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There are also 3 jumpers on the back side which can be used to normalize inputs A to D, B to E and C to F. This is useful if you would like to use the ABC mix as a 3 channel stereo mixer (using both outputs and having separate volume control for the left and right channel).


  • 6 channel mixer
  • 6 inputs A,B,C,D,E,F
  • 2 outputs: A+B+C and D+E+F (A+B+C is mixed into D+E+F if no jack is inserted in A+B+C)
  • 3 jumpers to select normalization of inputs A to D, B to E, C to F (useful for stereo mixing)
  • inputs are AC coupled
  • there are solder jumpers for changing the inputs to DC coupling (then it can be used for mixing CV signals)


  • 5HP
  • 35mm deep (skiff friendly)
  • current: +12 <10mA, -12 <10mA
  • PTC fuse and diode protected 10 pin power connector


See the product page for instructions/downloadable content.


Data sheet


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