I got some interference noise coming from my headphones. pretty sure its from the logitech speaker hub thing I plug them into. if I plug directly into my motherboard it goes away. but then I would have to swap the cables back in for my speakers which are 5.1. I hardly ever use them though. my mobo has a Optical SPDIF Out Port as well as the 3.5 ports that I currently use. if there was something I could keep 2 pairs of headphones plugged into and flip a switch between the 3 when I want, that would be nice.