Sorry I wasn't too clear. Thanks for the input. I think the subwoofers have the amp built in, so the 2.1 is amplifier for 2 satalites and 1 feed line(?) for the powered subwoofer.

I originally was only going to spend up to $400 to upgrade my computer speakers, but this got out of hand with $1100 upgrade + amp by the time I got done. Instead, I'm going to use that money for home theater speakers instead, after I purchase a better TV.