its looks like a lower end x-fi, even the processor doesn't look the same as it does on the regular x-fis but it would be interseting to see how this sound card compares to the older Audigy2 family of cards.
I would say all X-FI chips have the same ADC and DAC's as the other X-Fi series, just less inputs/outputs, and more features. So for what it does, it will probably be equivalent to other X-Fi's i.e. 5.1 channel sound.
Actually, looking more at it, the specs don't emphasize the DAC's nor ADC's... so it might not be as good...
Just go for the Xtreme Music, its no much more expensive, and it works fine for nearly everyone.