I got one of these for Christmas and have used it to connect from several items (laptop and iPhone 3G) to my home stereo. It sounds great.I was going to purchase a new stereo for my car just to have bluetooth streaming from my iPhone ($200 with install). I have been using an audio jack input to my car stereo from my iPhone.I checked the power input for the DC800 and it runs great from my laptop from a USB cable (it has a mini_USB power input on it).I already had a power outlet adapter with dual USB cable inputs for charging other devices.I connected the DC800 to the USB power outlet adapter and connected the audio outputs from the DC800 to my audio cable.My iPhone now streams music to my car stereo (very clean sound)AND it also acts as the speaker system when I make a bluetooth call on my iPhone.Total cost is about $65 and it works wonderfully.