I ended up purchasing the unit for $125 and tried out the rear aux., and although it worked well, with the jumpers removed, no other signals from the radio or phono worked, so that makes sense. Looks like I'll have to wire up some DIN plugs!

Thanks for the information, Yes there are 2 DIN plugs on the front along with the IR window and a loudness button (all recessed below the rosewood veneer) then on the back there are AUX in and out on the hinged connection panel (great design!) along with the speaker and antenna plugs. These 4 RCA jacks have heavy U shaped wires plugged into them to

I have my eye on a BeoCenter 7000 for sale in a local junk shop for $150 It includes c75 speakers. Eveything works but the Tape deck, it deploys the heads and pinch rollers and then retracts. No remote included. The lid does not stay down as the plastic catch is broken and the spring on the turntable cover is weak or broken so it doesn't stay up