I don't use Avid so I am somewhat clueless to their current integration with other systems . What is the difference between the Analog and Digital versions? No analog ins? I have been offered an http://www.economik.com/avid/hd-i-o-16x16-digital/ Avid HD I/O 16X16 Digital in trade. Apparently brand new. I am planning to sell this to some LUCKY Avid user (contact me). In the mean time I'm also wondering what you do with this? Could I use it briefly to test the conversion quality? I'm sure the answer is no, that I must need the core card and something to AD but thought to ask: Can this be used as a stand alone DAC or anything useful to those who do not use Avid or do you need the Avid interface card and Pro Tools with it too? If this is an indication of a fair market price,(Dead Link Removed) Who buys a 16 x 16 IO without analog conversion?