Here is a post Mark sent to me.
Good Morning All...
I just re-checked with Peter Madnick and indeed - the DDE's do NOT have I2S OUTPUTS... they DO HAVE I2S input(s) as I recalled so that one could use a DTI between the CDP of your choice and the DDE - or direct (I2S) from many Alchemy CDP's to the DDE directly.
I hope this helps... if any of you need assistance in hooking these up please send me an e-mail or PM me through this board and I will call you directly to help. I'm glad to do so... I'm very grateful for this place and the invitation that Larry gave me in joining all of you here...
Respectfully...