Mono Matrix Mixer

MATRISE is an active matrix audiomixer sporting four inputs, four outputs, sixteen level adjustment knobs and individual phase inversion switches for each of the four output channels. This makes for a powerful tool to experiment with signal routing and feedback loops. Among other things the device can be used to run parallel effect loops or amplifiers, add a clean-blend to an effect, or regenerate effects or even the mixer itself.

https://www.pladaskelektrisk.com/product/matrise/