I don't know beans about sound but I can tell you that the Logitech z2200 even makes it as a PA for a solo guitar dude. Just doing a honky tonk show, guitar/vocal, my vocals sound much better and the guitar sounds great. I have a baritone voice and the lows sound good to me. I think the sub is what is making the difference.

It has to be the best $50 spent EVER.