I really don't know much about external amps, but I bought a Denon 1312 receiver and would like to do a 7.1 setup (had I known back then that I was going to do 7.1 I would have chosen differently). To do that, I need an external amp to hook up the rear speakers (Polk R300s).
What exactly should I be looking at? Or does a cheap amp even exist? In my searches, I found that people recommend stuff like AudioSource Amp 100 (~$90 on Amazon), but that seems kinda expensive to use for just surround rear speakers (I paid a little more for the 1312, for comparison). Are there any amps that I could consider that would be more in the $20 to $30 range, or do products like that just not exist?