So does this mean that the 818v3 is the best you can get post MQA decoding for a digital output? Are they applying the MHR rule to everything?

The digital output on the Aries is 192kHZ, a step up from the 818v3 96kHz.

Primary: MD600, MS200 (SpeakerLink to AES), Trinnov ST-2, Ayre V6-xe, Salk SS8 3x LRC.
Secondary: MC600 (whole house).
Zone one: 568.2, G57, MS200, Spatial Hologram M2SE.
Zone 2-6 (Awaiting assignment).