Hi, I'm pretty new here and wanted to ask what amp I need for some new speakers and sub I bought. I hope this is the right place to ask, as I couldn't figure out if there was a help section. I just purchased a polk audio psw10 subwoofer and a pair of sony ss-b3000 bookshelf speakers and will need an amp to power them. Sonys are 120W, 8ohm, 88db sensitivity. Ppolk sub is rms 50W Does anyone have a recommendation of an amp to use, basically for as low a price as possible, while still working well for the system. Thanks!