Hi there,

which units use Audio over USB. Most need that line out loop back lead which i have found cause mega probs for ground loops.

WHich hauppage devices or similar use Audio over USB with good quality. My WIN-TV USB FM offers it but it sounds like crap. DO the Hauppauge PVR - USB2 offer it. i cant see any mention of a loop back cabel on the site thinking its audio over USB