591 Quad Switch Matrix Router
is a passiv module, where 2x4 output Jacks ( destinations) can be routed in pairs 2x4 signal inputs (sources) using four 6 way rotary switches with two off ? positions.
This simple device is intended as a compain module to the M552 , but suitable for a multitude of appli8cations , where audio- and control signals have to be routed fast and with immediate visual feedbaxck. Use your imagination.