Magpie panel
ABC is a simple 6 channel signal mixer. It has 6 inputs – A,B,C,D,E and F – and two outputs – A+B+C – which is mixed in to the D+E+F output if nothing is inserted in the A+B+C jack. ABC 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.
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 left and right channel).
Width: 5HP
Max Depth: 35mm
Power: 10mA@ +12V , 10mA@ -12V , 0mA@ +5V
Features
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 (than it can be used for mixing CV signals)
Handmade in Brno, Czech republic
These merchants probably sell this module. Huh?