Receiver Recommendations

I tried to post this once before & it didn't show up. So forgive me if it's a duplicate.

I'm looking for a used 2-channel receiver to power two sets of Polk in-wall speakers. They'll be used in our great room & bedroom. For mostly background music, but for some semi-serious listening, when I'm not downstairs listening to my main system.

My orginal thoughts were something by NAD or Rotel, but only because I'm familiar with those two. I'd be open to vintage tubes, newer digital, older ss, whatever. I don't have any use for 5-channel, but if there's a unit that's particularly good for music I'd consider it.

I'm looking to spend somewhere in the neighborhood of $250-$350.

Sources will be FM(internal) and computer.

Thanks,
E-