What exactly is the little white box sitting on the console? Not sitting on top of the meter bridge, but the one sitting in the center. I see this all the time in pictures of studios, and I never knew what it was.
I was thinking a lexicon remote control, the reason for the remote was that the reverb was in a big box out of the way somewhere.
The second thing I was thinking was it was some kind of remote / synchroniser unit for controlling tape machines, the timecode would be on the display (red part).