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"Missing from all cards is the FireWire port that shipped with most versions of the Audigy 2 series. Since the majority of motherboards and systems now have FireWire onboard, this isn't a major omission. Creative is currently using a Cirrus Logic CS4382 8-channel DAC (D/A converter) for three of the four cards, which the company has used in the past in the Audigy 2 ZS line. Interestingly, this DAC supports DSD (Direct Stream Digital) input, which implies that Creative could add support for SACD down the road, though whether SACDs would work in a standard PC DVD player is unlikely. The CS4382 is highly capable in other areas, with a rated 114dB S/N ratio and support for 24-bit, 192 KHz digital audio.
The high-end X-Fi Elite Pro uses four Cirrus Logic CS4398 stereo DACs. These are the same DACs used in the Audigy 4 board, and offer better signal-to-noise ratio than the 8-channel CS4382. Like the CS4382, the 4392's can handle both PCM and DSD digital streams. In addition, the board features a Xilinx XC9536XL, a programmable logic device that can be used in a variety of applications, but has been used in some devices to handle DRM wrappers for digital audio."
Extremetech
Un saludo.