I've got a Xenyx1202FX that I am trying to use to record some stuff. I connect it to the PC throughout the stereo main out into the PC (win7) line in. I am also using a UK-> EURO power adapter. Furthermore, I have also connected the PC line out into one of the stereo channels.
When trying to record with Audacity even with all the volume controls turned down, I still record this annoying buzz.
I am able to reduce the noise greatly by turning on the DC offset cancelation in the line in options, but a part of it still remains.
I wonder how this happens and how to make it disappear.