For that wireless speaker you have been looking for the Libertone Beat has the answer. I really like the style of this speaker and its different forms of connectivity. A wireless speaker with a 50W bass and two 25W tweeter/midrange drivers. Just plug in the USB transmitter to your PC or the bundled 30-pin connector to an iOS device and you’re good to go. Plays audio from iPod, iPhone or iPad using the wireless 30-pin transmitter (range 10 m) or from a USB equipped MAC/PC using the wireless USB transmitter (range 30 m).You can even have a wired option if you would, you can play wirelessly over your iPad, iPhone, or iPod and controller multiple Beat Speakers. I think this is the best wireless speaker I have seen yet, and for $595 it’s worth for those who need a speaker such as this.

Link: Libratone