Is there any chance someone could please help me? I'm trying to install a ASUS Essence STX II 24-Bit 192KHz Sound Card + 7.1 daughter card using UNi Xonar Driver 11.5 v1.80b r3. The card will be used to output to a set of Logitech Z-5500 5.1 speakers using RCA to 3.5mm for 3 channels (1. front 2. rear 3. sub/center). I'm running Windows 7 64 bit and have a GIGABYTE GA-X58A-UD5 (rev. 1). The issue I'm having is I can only get audio if I crank the system volume as well as my Logitech speakers to the max. Even then it's quite low and bad quality. I've done everything from changing PCI slots to uninstall and reinstalling hardware as well as the drivers. Could anyone please shed some light on solving this?