If you looking for a great sound from a simple system consider the Dynaudio Xeo wireless speaker.If you want to step up a bit the new Focus XD series would be even better. Presently the Focus XD works best with a digital cable to the master speaker and another to the slave speaker. They should be coming out with a better wireless option than the Xeo (higher resolution). All you need is a source. But to get the best from the Focus XD you need a source with a digital out. Those speakers only need to be plugged into power.
http://www.dynaudio.com/int/home_loudspeaker_systems/xeo/xeo.php
The Xeo 3 and 5 are the original Xeo's with the Xeo 4 and 6 being the current production.
http://focusxd.dynaudio.com/find-a-dealer
The Focus XD has 3 models
http://www.dynaudio.com/int/home_loudspeaker_systems/xeo/xeo.php
The Xeo 3 and 5 are the original Xeo's with the Xeo 4 and 6 being the current production.
http://focusxd.dynaudio.com/find-a-dealer
The Focus XD has 3 models