anybody here seen/used one of these? I have a Kenwood X579 head unit which I'm VERY happy with. My g/f's car came with XM and I've been very happy with it's sound quality and song selected.

I can get a second sub for $6.99/month off her plan for my X. I'm just looking for advice on this unit...like if it can actually allow my X579 HU to control an XM tuner and if there is any quality loss from the conversion unit between the HU and the tuner.

XM tuner for Kenwood Units

Thanks!

Sky