Summary: I tried the ZX and my system would completely lock up after booting into Windows 8.1 I could not make any sense of why and went back to ASUSTek (previously had Xonar D1). This soundcard is absolutely amazing, crystal clear quality and with UniXonar drivers + XonarSwitch just the best audiocard out!
Summary: I've always used Creative products in the past for my PC sound card needs, but after doing some research I decided to give the XONAR series a try, with the DX card being the best bang for buck. I was not disappointed. Pros: The sound is excellent, the price is pretty good, and it's simple to install - literally plug and play.
Summary: This is a relatively cheap sound card but it definitely does a better job than the 7.1 chip on my new motherboard. I use Sennheiser HD595's through a Sony amp while listening to all genre of music. This card is accurate, doesn't impose any coloration and feels relatively flat across the spectrum. Negative is the lack of color coding on the inputs/outputs. Colors have been standard for a very long time.
Summary: I cannot believe I was getting by with just onboard audio. Even with a pair of mediocre headphones, the audio quality is increased 100-fold with having a dedicated amplifier. Can't wait to test these with a home theater setup.
Summary: I have built two identical gaming systems for my wife and myself. I purchased this card because I wanted to use PCI-E slots on the motherboards (a card in the PCI slot partially blocks the power supply ventilation intake in my Antec 900 cases). I already had a Creative X-Fi Titanium Fatal1ty in one system, so I only ordered one of these at first to test and compare. It works perfectly, and sounds incredible!