Default [Q] USB audio just doesn't sound quite right.

It's possible I'm crazy but I've just installed the latest version of CM10.2 on this device to get USB audio going and I have to say it just doesn't sound as good as the usb audio on my Galaxy Note 2 running stock firmware. Is this some kind of issue with Android's internal audio mixer that Samsung's firmware has managed to bypass? Has anybody noticed this?
AT&T Tilt stock rom