I have an Onkyo Ht-550 receiver. It came with an in the box home theater setup. The whole setup has good sound, although I am no audiophile. The receiver outputs 1035 W, so it has plenty of juice to power the 7.1 surround sound setup. I upgraded the subwoofer to a larger, more powerful one just because the bass was not getting enough punch, but now I am now looking at a pair of tower speakers and they have something called a bi-amping feature. My receiver does not have this feature, and I am wondering if I do not do this, will it hurt my sound quality or volume that it can output. The subwoofer that I upgraded to has a built in amplifier in it, so could I use that? or is this not a big deal? Any helpful information on this would be greatly appreciated, as I am kind of a novice to this. I am primarily interested in music sound quality if this helps guide your feedback.