No mention of the Zefiro ZA2 sound card, which was the first generally available full-duplex SPDIF and AES/EBU digital soundcard for PC's: http://www.dancetech

No mention of the Zefiro ZA2 sound card, which was the first generally available full-duplex SPDIF and AES/EBU digital soundcard for PC's: http://www.dancetech.com/item.cfm?threadid=259 http://www.dancetech.com/item.cfm?threadid=259 This card was standard fare for audiophiles for a few years in the 90's, given its designers attention to quality.