Hothardware published a review of the ASUS Xonar DX PCI Express 7.1 Audio Card.

Quote from the review: "A few months ago, ASUS jumped into the audio card market with both feet with the introduction of their Xonar product line. One of the first models to market was the premium Xonar D2 Ultra Fidelity 7.1 sound card. The D2 boasted a superb retail package with all of the cabling, software and extras one would need thrown in, along with a slick, eye-catching design, for around $180.
Not only did the Xonar D2 Ultra Fidelity 7.1 deliver on all fronts, but it also proved to be solid competition for Creative, who still has somewhat of a stranglehold on add-in audio card market.
To further infuse themselves into the audio card market though, ASUS didn't stop with the Xonar D2 Ultra Fidelity 7.1. They have since developed several other model to meet the needs of consumers of all budgets. Today, we take a look at ASUS' latest offering which targets the mainstream market, the more affordable Xonar DX PCI Express 7.1 Audio Card."
Read the full review on Hothardware.