Was this Technics set up for Radio or Nightclub?

I can tell you through experience ,the Technics I believe 3000 from memory,direct drive turntable was used in Many professional radio and recording studios back in the70s-80s. You did not mention which model turn tables these are , or cartridges , 
I used to own  the  classic technic direct drive  turntables with top audio technicacartridge back in the early 80s. It brings back fond memories of  being an Audiophile in its purist form with my Nakamichi Dragon 3 head cassette deck, state of the art in its day.

@lewm , Yes, it switches back and forth between the turntables and controls volume. It is a cheap miniature of what is used in radio stations.
The U of Vermont had a radio station run mostly by the students. I served as a DJ for 2 years. Lots of fun. The highlight of my career was getting to interview Return To Forever. Corea was heavily into Scientology at the time and made no sense as far as I could tell. Al Di Meola did not say a word other than hello, Lenny white was the most grounded of the lot and Stanly Clark was painfully dumb but cheerful and friendly. He was also one of the most talented bass players of the day. Still is. I think he was the first to do that thumb thing where they wack the string making a staccato note. It became the "thing" several years later.

If I had $3,500 - I'd buy two of them!

Last time I played Vintage Soul 45s in Tel Aviv on this sound system in 2019 at the place called Romano. Very impressive, especially those huge Fisher speakers. Great venue! Personally I don’t like rotary mixers, especially those huge old like Bozak, this is the actual set up.

Spent a lot of time with these at KTUH.  Can't remember if it was SP15 or SP25's.  They started and stopped on a dime; amazing torque.  Bulletproof.  Student DJ proof?