What I mean is, if you have the analogue one, then there is a DAC stage in the non-Meridian processor, and then an ADC stage in the 271 to put the audio in the right format for your M DSP speakers. this was the DAC/ADC stage I was referring to.

Presumably the Trinnov and Datasat versions support whatever crypto the digital audio comes in on, thus avoiding that DAC/ADC step.

Do Trinnov and Datasat encrypt their digital audio? I don't know...

Lounge: LG 55B6v, Some Denon receiver, Anthony Gallo Reference AV mains, Totem Dreamcatcher centre, SVS PC-4000, AppleTV4K
Office: Audioquest Dragonfly, Cyrus 6DAC, Monitor Audio CPW Gold
Headphones: NuForce HDP, Audeze LCD-2, Sennheiser HD6XX, B&O H6mk2