I'm a newbie and am interested in the MOTU 896HD. When I look at how many inputs it has it says it has 18: 8 analog, 2 AES, and 8 ADAT channels. but the 8 ADAT channels are through one connector. How can that one connector cover 8 channels? If anyone has any info on this or can lead me to a site that explains how ADAT works it would be very helpful. Thanks.