Nah.... I will just take your word for it.
Thanks, regardless, I posted the link to the video before but for a quick reference in case others are interested, below is the screenshot of the preamp/dac block diagram from the video:
Obvious this is Marantz as you can tell by the presence of the HDAM, Denon's will be the same but without the HDAM.
You can see that even if the HDAM (discrete Opamp) does have better slew rate, it's performance will still be limited by the upstream components such as the DAC, opamps, selector (also solid state ICs), E. Vol (SS ICs) etc.,. Assuming the HDAM does offer lower impedance, it also doesn't matter because it also has an opamp right in front of the power amp (not shown in block diagram, but clearly shown in the service manual for the previous models such as the SR6014 and presumably newer ones) that are ICs, that is, not the discrete type like the HDAM. Amazingly, the OPAs positioned after the HDAM but before the power amp inputs were shown to be there for the front left and right channels though, as noted by bigguyca.
The diagram shows analog input signals, if direct or pure direct mode is selected, it will bypass the ADC (not shown) and DAC but cannot bypass the E. Vol and the HDAM.