Really old, no inserts, limited aux and eq abilities.. they were pretty good PA boards for their time (80's). It has a pretty good slew rate and it may be discreet, not IC based, I'm not sure about that. I used to use on as front end for a four track rig years ago, I got some good stuff out of it.. I think it is a Greg Mackie design, between Tapco and Mackie on the timeline ... (I could be wrong about that too). You should be able to get it for next to nothing ...