Since I really like the Sorcer X4 that I have, I just bought the new item just released from Add-POWR, it is called the SYMPHONY I/O. And it is listed at 1/2 off during the introduction!
It is designed to be used with usb or ethernet cables. I hooked it up to my Lumin X1 and to my external hardrive. The more traditional use would probably be at the modem say to a Uptone Regen or similar device for streaming.
Thus far I am really digging it. I also connected it to my Apple TV and it really improved the video quality as well.
Highly recommended!
ozzy