Last of the active matrix mixers - the anthracite grey faceplate and purple mainboard date it to being rather ancient.
Four capacitively coupled inputs and four outputs, with each output having its own gain control. Unlike its passive sibling, you can use this to generate all sorts of shrieky feedback effects and it even uses TL084 op-amps to minimise the risk of latch-up (capacitive coupling helps, too)
Of course, if you just want to mix signals together in interesting ways then it'll do that as well.
