Ult-Sound MSM-4x4  - is stereo matrix mixer
in a eurorack format.
Built using special low-noise audio operational amplifiers
A flexible routing hub for complex patches, designed to blend, distribute, and reshape signals with ease.

When used with stereo signals, the knobs act as balance and volume controls for the L and R channels.

If nothing is patched into the B input, the A channel is automatically linked to B.

Use it as:
- 4×4 stereo matrix
- mono-to-stereo router
- full 8×8 mono matrix
Works great with CV signals as well.
Width: 20HP
Depth: 25mm with connected cable
Current draw: +12V 40mA, -12V 40mA