x-E-S- is the stuff that sony actually took their time into making. The only downside to this stuff is that it is expensive and all the amps and subs and speakers are made to run together. The subs run the amp at a 1 ohm load and the speakers are at about the same ohmage. All of it is designed to work togher. Its about the only sony product i would ever own-- its good stuff.
---chris
