I think the term you're searching for is a "preamp"
although, for cost reasons, you might be bettter served by purchasing a stereo receiver with a remote control which would replace both the Bose system and your current "mixer". They can be had for as little as $100 or less.
Oh, you'll need speakers too, but they don't have to cost a fortune.
That's what I'm trying to avoid...
My place is tiny and every inch of space is precious. Besides, the sound from the Bose radio is more than adequate for my needs and provides me with a tuner and alarm clock as well. Everything has to do double duty.
I will search for a preamp, but I haven't had much luck so far. Can you make any suggestions for a preamp/mixer?
Bill
Well, here's another thought.
Wal-Mart sells. in their "audio" department, simple switch boxes for +/- $20 that switch up to four audio/video inputs and send them to one output, which you can feed to your Bose.
I picked one up made by Philips a few months ago for that aforementioned $20 plus the governer's .cut
It doesn't have a phono preamp, which your NAD most likely has, but that's a totally different issue. For that you're talking additional $$.