Hello there, I have this really nice set of bookshelf speakers that i was planning to power with a mini amp like the lepai 2020 etc however i have this AMAZING sounding subwoofer from a home theater that wasn't being using and i want to know how i can power the bookshelf and subwoofer with an amp or amps. The subwoofer doesnt have a built in amp and is only connected by RCA cables. Please suggest amps $150ish and under that could power my boookshelf and subwoofer (having at least 3 channels with enough power for a SUB). Also is it possible to power my bookshelfs with one mini amp and my sub with another and just connect the audio inputs into the appropriate places on my computer?