er, it's not exactly setup like that: all our converters are used as DA only, no AD or DD. So the 192's each have one DA expansion card in order to have 16 analog outs per unit. Same for the Apogees: they both have a PT HD x-card, so they're directly interfacing with PT, without 192's between them.
Hope this clarifies it a little. But the question still remains the same
Redsandblu