Just got this Asus Essensce STX II sound card and I must say it is definitely "audiophile" quality. For me, this is the best consumer rated sound card money can buy! The sound on it is amazing and with swappable op-amps, the sound profiles are endless. I swapped the Muses 8920s for the TI op-amps that come with it. People said those give tighter bass which I would agree with. I plan on getting Burson V5i's to put in it as soon as I have the money. This drives my Sennheiser HD579 headset and some Samson speakers/monitors that I have. I plan on getting the Sennheiser HD660S as soon as I have the money or maybe pick up the 58XX off Massdrop . I can't recommend this sound card enough. Makes listening to my FLAC music files on my PC a blast! Go to amazon.com and grab one now!