Reply to Xone: DX Soundcard Noisefloor

What is the noisefloor of the soundcard from the DX like (if it at all has one)?

Because I have noticed a slight high frequency beep (like the kind when your ears ring) coming out of the headphone output and the master out when I turn them past, say, 8 or 9.

Do other DX users on here experience the same, is this normal?

Because I am kind of worried that this would be to noticable when connected to a large system.


All help appreciated.