[creativecontrol]

I would need more details on your use case to make a recommendation on how to deploy your specific system.

A few things regarding DigiLink settings...

If you have a MTRX Studio with HDNTB or HDX - I would recommend the following for DigiLink in the Conf section of DADman:
DigiLink Mode: Pri/Pri - which is Dual Primary.

Connect both DigiLink cables from Port 1 MTRX ST -> Port 1 HDNTB and Port 2 MTRX ST -> Port 2 HDNTB. This will give you 64 channels of bidirectional audio from MTRX to Pro Tools.

Assuming you have MTRX Studio + another HD series interface like an HD Omni, I would still set the DigiLink Mode to Pri/Pri and connect one interface to each of the 2 DigiLink connections on the engine (HDNTB or HDX) card. Such as: HD OMNI Port 1 -> HDNTB Port 1, MTRX ST Port 1 -> HDNTB Port 2.

Now, let's assume you have 2x HD IO + a MTRX Studio? What to do?

Here's what I would recommend:
(Pri/Pri) MTRX Studio Port 1 -> Port 1 of HDNTB
Port 2 of HDNTB -> HD IO A
DigiLink out of HD IO A (expansion) -> primary port of HD IO B.

How about 3 HD IO + MTRX Studio? Let's go!
(Pri/Exp) MTRX Studio Port 1 -> Port 1 of HDNTB
Out of Expansion (Port 2) of HDNTB -> Primary of HD IO A.
HD IO B connects to HDNTB Port 2
Out of HD IO B Expansion into HD IO C Primary.

Hope this helps.


Jeff