Solid State Logic Matrix 5.1 Monitor Card

Optional 5.1 Monitoring Expansion Card For Matrix v1.

Installing this option will convert the External Source inputs EXT A and B input from stereo to 5.1, and the stereo monitor outputs into two 5.1 outputs.
This provides 2 input stems for 5.1 monitoring, and 2 sets of 5.1 speakers to switch between and control using the Matrix centre section.