I think you still missed my first and most important point:
"1) In Audio Direct mode all amps/receivers sounds same"
Can you guarantee a 100% than your so called "measurement" of your $450 Marantz surround receiver was done with all sound processing circles off?
Was this "measurement" was done blindly?
Was it done by 3rd party?
If at-least one of the answers is no - your "measurements" are worthy only as far as personal and subjective opinions.
You might want to read these articles before you march in here and start claiming that based your hearing "test" different receivers measures differently..
I certainly didn't miss the point. On the contrary, I'm point blank telling you it's not true.
Both scientifically and blind testing.
Clearly, all signals need to go through a preamp and gain stage and and amplifier. There are measurable differences in the specs--including all these receivers--whether its THD+N or S/N ratio, etc. So, scientifically, all receivers do not sound the same in pure direct mode. All that does is by pass tone controls. Run five different receivers from $300-$2000 through the same tests and you'll be able to tell the difference.
In fact, perhaps that would be a great Audioholics test! Get a Sony, Marantz, Onkyo, Anthem, Arcam, and a Mark Levinson put them all in 2 channel with the same amp driving them and tone bypass and do a double-blind test with some great speakers.
See, one of the reasons why I have Revel speakers is because of the rigorous testing in the Harman anechoic chamber, their measurements, and also their double-blind listening station. So, I'm very, very much a big proponent of testing, measuring, listening, and then making a decision.
And I forgot to mention, yes, all processing off, and measurement done with an SPL and also verified with a spectral analyzer. So not only do I state the claim, but anyone going in and listening to receivers up the food chain and price range will notice a difference in the sound, tonality, and soundstage, and imaging. That's not just a function of the speakers.
We can certainly agree to disagree on this; but I'm pretty adamant in my stance that all electronics don't sound the same--even in tone bypass mode.
I appreciate all the articles, but I'm already very familiar with everything mentioned in them.
