master / slave digital cable for 440Pro

[Axel]

By the way, do we know what is being passed thru the SPDIF Link cable and the RS232 cable?  I understand that decoding and amplification is done individually when in dual mono mode?

I'm a bit confused why both cables are required for a mono set-up. With my D-Premiers I only had an RCA/AES cable linking both and it worked fine.

Is it that the 3.5mm link cable allows the Companion to also use it's inputs (didn't have this choice with the D-P's)?

If using the 3.5mm link cable between the 2 units then how do you set-up a Sub for trigger out (what I have at the moment with my 250Pro, and previously with my D-P's)

Yes, that's correct. The only trouble is, that if you use the 3.5mm link, you can only connect the amps RCA-RCA.  IMHO, the amps sound better linked RCA-AES/EBU.