Thank you for the information.  Not exactly what I was hoping to hear, but it lets me know the limitations.

I guess I'll have to keep looking for what I'm after - something that would allow me to have 4x realtime audio inputs of sufficient quality to capture and perform mathematical calculations on the captures in close to realtime so I could analyze signal to noise, as well as distortion characteristics on the four channels.

Stay well!

How about information about the analog inputs?  I'm trying to determine whether they would be sufficient to capture audio waveforms to be digitized - what bandwidth one could expect from each input.  I'm 'assuming' they would handle 0-3 vDC, although that's unknown with any certainty.  Can it sample at, say, 0-50kHz on those lines?  Would I expect a limitation regarding the number of active ports which can be sampled simultaneously - and what the impact of the number of streams being sampled vs bandwidth?

As for the female headers, it might be worthwhile to manufacture my own so that a standard ribbon cable could be attached to the headers.  I hate to order a couple of the 3 Delta's, only to find that they would be useless for my purposes...