M 543CP Four Channel Output Mixer

Four Channel Voltage Controlled Stereo Output Mixer (CP format)

Incorporates four input channels each with voltage-controllable volume and panorama, mute switches and status LEDs.
Mastervolume and variable dual headphone output (switchable pre/post master volume).
Extra: switchable A-440 Hz tuning normal.

CP-Format

Technical:
The module is completely DC-coupled (except the internal connection to the headphone amp) and can therefore serve as a Quad Dual Channel CV Mixer. Input channels can be jumped for AC-coupling.

http://www.lunar-experience.com/download/543cp.pdf