This question is more for my educating my curiousity, than for solving a problem, but when I recently replaced my Audigy 2 ZS Platinum sound card with a Xonar D1, I was satisfied for the most part, with one exception. While it is louder than the onboard sound, the maximum volume available is noticeably lower on the new card than the old.
Comparing the specs, the Xonar claims a 116 db sound to noise ratio, and the Audigy a bit less at 108 db. This would make it appear that the Xonar should be able of being louder.
The only other spec that I found that might relate is on the Xonar it states that the Output/Input Full-Scale Voltage is 2 Vrms (5.65 Vp-p), but I didn't find a similar spec on the Audigy, and am not certain how it would fit into the picture if I had.
The bottomline is if I should expect the Xonar to be capable of = or > volume or not?