Summary: This card is clear and produces good sound but is not flawless. It is adequate and I suggest getting the 2013 beta drivers if you use Win7. Music and movies sound great. It's mostly good in games and does what it should but sometimes, not often, produces mild choppiness in sound. The EAX abilities in this card are great! The card sometimes exudes an inability to completely produce certain fast sounds like when navigating windows explorer windows give a click.
Pros: Mostly good, Used for gaming, music, and movies with headphones
Cons: Some windows explorer 'clicking' sounds seem to only produce part of their sound sometimes, Some gaming issues but probably mostly due to system load - choppiness of sound
Summary: Sound card installed without any issues. Installed the drivers and tried the Sound Software Setup. Was not working well. Went and downloaded the latest drivers from Asus for Win 7 64-bit and the Sound Software works a lot better. None of the preset Equalizer buttons sound good at all. Had to set them up manually. The connections are close together so large plugs will not work.
Summary: This review focuses mainly on the performance of the card from a technical point of view. It most likely also applies to the Xonar DX, which is basically the same card, but with PCIe interface instead of PCI.
The strongest point of these cards is the (CS4398 based) DAC, which supports sample rates up to 192 kHz, and 24 bit resolution (I tested mainly at 44.1 to 96 kHz).
Pros: Excellent DAC for the price
Cons: Too high output impedance for many headphones
Summary: I needed to update my on-board Realtek HD audio. I only had the standard front speaker jack, Mic-in and Line-In. I needed a good X.1 speaker set up. Xonar D1 was a good choice and Asus did have the required drivers for Windows 7 64 bit.
Pros: It just works!
Cons: The manufacturer is not widely known for anything but motherboards mainly.
Summary: Compared to on board audio the Xonar gives a new meaning to HD. I am using it for a 2.1 system and the quality of the output is great. I have to ask, what does a $300 audio card offer that this Xonar doesn't have? I don't like the loud thup thup of bass that kids like today, I prefer to listen to every note a good CD or DVD can deliver at an enjoyable level. This card delivers that and more.
Summary: I've used this card for a few pc builds including my own computer. I have tried various makers over the years and wanted to give Asus purely as an experiment and to try something new. Overall I have to say that the output quality is notably superior to on-board motherboard chipsets, but you need to have either decent speakers of headphones to really appreciate it, a super budget set of speakers will waste the potential of the card.
Excerpt: Crystal clear sound with no noise at all using the front headphone jack. Even my old Xfi that this replaced had a loud hiss from the front panel jack, but not this card. Sound is crystal clear, bass is fuller and much less muddy than prior to. Movies sound amazing. I've heard subtle sounds in games that I in no way noticed just before. EAX assistance is fantastic for the games that assistance the version this card provides.
Excerpt: Fit neatly into my Dell GX280 SFF program, will grow to be element of my Household Theater Method as a Blu-ray DVD player. While their download website has drivers for Windows 7 bit) it downloads in an RAR format - seriously, could you make it tougher...?
Summary: Noise good up to around 96KHz, then some noise creeps in towards 192 KHz. stereo channels not accurately matched.(images noticable away from calibration point) Build quality good. Apart from noise level, The D1 is no better than my on board realtek ALC 889A.