This is the detail page for one of over 225 audio interfaces covered in The Computer Audio Interface Guide, which also lists where to buy this interface used.
18-in (2 mic/line analog balanced, 6 line analog balanced, 8 ADAT, 2 SPDIF) 18-out (8 analog balanced, 8 ADAT, 2 SPDIF), ADAT, SPDIF. (Heavily discounted to street $400, 1/2006.)