Input limited


Setting up my Pioneer SX-1050. In the 70s all you had for other inputs was tape. Unit has Tape1, Tape2 and Aux. 

I also have CD and a Squeezebox. Both line level. 
So, how do I jam 2 inputs into the Aux? A plain RCA A-B switch box?
128x128ibmjunkman
So you are out of inputs. Your options now are to use one RCA and switch it from CD to Squeeze, or 2 RCA and swap them at the amp. Or if one of your tape decks is seldom used for recording, then you could run the CD or Squeeze into the REC input of that deck, and when you want to listen to it flip the deck to REC and monitor the line level through the deck.
Well 1 in and  4 out with a rotor switch is gonna be the safest. Can't hit two sources at one time and reverse the way it goes into the pre.
1 out 4 in.. on a rotor switch.. PE sell them I'm sure

Regards
I Use a Goldpoint switch which works perfect for my application.  Perhaps it will suffice for yours also.  Scroll to the bottom of the home page for various box options.  
https://www.goldpt.com/