This is a UREI 535 stereo or dual mono graphic equalizer with original security cover . 

It provides 12 db of boost or cut on  10 frequencies.

It has screw terminal connections on the back and balanced bridging differential amp inputs, variable gain, floating transformer

isolation outputs of 150 ohms or greater. It has the original faders and they work ok, but if you want me to upgrade 

to the alps faders like seen in the movie below I can do that for an extra $300.

CLICK HERE TO SEE MOVIE

 

seen below with the security cover.