I installed this card in my brothers computer (AMD XP 2000+, Win XP SP2, onboard sound - cant remember which MB though).

He's using the RF input (doesn't have a cablebox), and the line in of his "soundcard".

The problem is very noisy audio. It's not distortion. The level is fine.

I dont know if the culprit is the WinTV's audio output or the MB line input. I plan on installing an old soundblaster the next time I visit him, but I wanted to get opinions of those who have experience with this card.

I've searched this site but found nothing, and SHS's site is mostly for the PVR cards, so nothing there either.