Holy carp.  I Picked this up surplus and when i looked inside the build quality is fantastic!

The power supply is a whopper.

It’s got 72 inputs and no faders, no eq, and 3 auxes.

It’s got 8 busses in a surround configuration ( L, C, R, X, Y, Sr, Sl, S ) with no faders!  Just switching.

There’s also VCA automation that can control the final gain of each group.

Solo and Mute busses as well!