This is a 16 into 4. It dates from the late 70s and early 80s. Originally I have the impression that it was especially made to work with a four-track kind revox. Basically each of the 16 tracks can be balanced on one of four outputs.
For each slice: Gain, TREB, mid, bass hz, db bass, echo 1, ech 2 (to balance the effects), foldbach, pan.
For the four outputs: rec button, my, foldback, pan.

UTILIZATION

Very easy to use. Not much chance.

SOUNDS

So this is really great, I'm not a professional sound engineer but I have opinions on that, because it is a great console for less. I use it with an upstream AW1600 and it warms me all the eq is very effective. It gives relief and potato.
The console is not really transparent, you must love the sound.

OVERALL OPINION

I use it for 2 years. After spending 350 euros for maintenance of all kinds, I am very very happy.
I care.