In reply to:
I have the turtle beach santa cruz, when i plugged it into my preamp, i had to have the volume on what would be quite loud on my cdp, and i had all the volumes on the puter set to high and it wasnt even that loud.
The old Turtle Beach stuff (I've used a SCruz back when they had a clear step-up over Creative's products) has no amp circuit onboard if I remember correctly... TBs stand (correctly so) is that they don't want to add amplification inside the EMI disaster that is a computer case.
The Creative line should drive a solid line level... that M-Sound or whatever, you're on your own... never tried one.
Bren R.