Are you saying that the Emo has true Pure Direct, but the Denon/Marantz don't have true Pure Direct?
There is no real definitions of Pure/Direct each manufacturer picks there own.
Thankfully, Emotiva chose to divorced illuminating the front panel from "Stereo Reference Mode". This has always been a feature from the marketing department that has no bearing on performance.
Let's take the XLR inputs on Marantz AV8801 and Emotiva XMC-1.
XMC-1 Stereo Reference performs no A/D conversion, never applies DSP processing, bypasses DSP circuitry, and is fully balanced. Trims operate as they are part of the volume control but distance settings do not as they are DSP based.
AV8801 Pure/Direct - Sometimes performs A/D conversion, may apply some DSP processing, bypasses room correction and PEQ, forces the from panel display off.
I am not certain when DSP processing is bypassed or not. It is clear that features like bi-amp, Bass LFE+Main are DSP implementations so A/D conversion must occur.
The 7.1 analog inputs on both units do not support any DSP features because A/D converters are not implemented.
- Rich