The Audigy 2 supported up to 6.1 speakers and had improved signal-to-noise ratio (SNR) over the Audigy (106 vs. 100 decibels (A)). Audio output was supplied by the AC97 codec on the front outputs and I²S on the rear. It also featured built-in Dolby Digital 5.1 EX (which is technically 7.1) decoding for improved DVD play-back. A IEEE-1394 (FireWire) connector was present in all modifications except Value.
