Headphone preamp on soundcard 2003-06-18 14:55:38 I got my Aureon 7.1 today, and it actually has a dedicated headphone preamp on the PCB (my old Audigy apparenly didnt). Now, when I set the master volume to 50%, I got my desired volume on the headphone, and seems to sound OK. When I turn on the preamp, it almost blows my head and the headphones at 50%. I need to turn the volume down to 10% when using the preamp to get the same perceptual volume as without.Now the thing is, do I really NEED to use the preamp on headphones? Does it affect the quality using it or not?Thanks.