XLR and 8 pin DIN plugs - STEREO LEVEL CONTROLLER? - pc board

For Sale:  I have no idea excactly what this is or does but looks like some kind of level control. There are two XLR microphone type inputs and two large 8 pin DIN typle plugs, and two pots.

Marked:

Assy# 27-01-050558  and 27-01-050557

Additional high resolution photos available on request. 

Send your zip code and city for a shipping quote - should be between $5.99 and $7.99 if you are located in United States of America. (April 2023).