I went to Best Buy and listened to Marantz sr6008, sr5008, sr7007 and Denon x4000. I used my iphone as a source connected to auxiliary input with Pure Direct turned on all receivers. Not a perfect source, but at least same DAC was used and I could concentrate on the analog performance of all receivers.
The speakers connected:
Bowers and Wilkins - 6-1/2" 3-Way Floorstanding Speaker
Model: CM9GB
First, I listened to the Dave Brubeck Quartet - Time out, Take Five song.
I immediately noticed the difference in high tones between Marantz and Denon.
Marantz definitely sounded a little softer. Very easy to hear it when listening to the hi-hat sound or the snare jazz brush sound. I could not hear much more difference besides the above.
Next, I listened to, Ultimate Demonstration Disc: Chesky Records' Guide to Critical Listening.
I concentrated on track 29:
"Best Of Chesky Jazz and More Audiophile Tests, Volume 2"
I do play on drums a little so I am familiar with the sounds it can produce.
I played the song many times on all receivers to make sure I can notice the difference if any.
Sr6008 and sr5008 sounded exactly the same, so I was just testing with Sr5008, Sr7007 and X4000.
The most surprising for me was the SR7007.
The X4000 killed it. The kick in the song felt so natural on X4000, that I could feel the drummer sitting there and hitting it.
It was so pure compared to SR7007. SR7007 kick was too soft and not realistic.
Again, I was testing all in PURE DIRECT mode.
The high tones on Denon sounded definitely much brighter but very natural.
At times I felt like Marantz was easier on the ear, but I also liked the purity of the X4000.
The Marantz sounded very delicate and detailed. (at times it felt too delicate and some instruments would lose its natural sound)
I liked it a lot, but I also liked the Denon and it was very hard to decide between the two.
After going back and forth I decided to pass on sr7007 and limited my choices to sr5008 and x4000.
There was something wrong with the Sr7007 sound. At times it felt pure but somehow unrealistic.
The kick on sr5008 sounded very similar to x4000 but maybe few notches softer, but definitely better than sr7007 and almost identical to X4000.
I finished my testing with the "Spanish Harlem" vocal song from same cd.
Both receivers sounded very nice and it was difficult to tell the difference.
In summary, it seems like there is a difference between Marantz and Denon and all the claims about Marantz being soft or warm and Denon being bright are valid. I personally could hear the difference.
Now, I got the problem and need to decide which receiver I should go with. Sr5008 or X4000.
It seems like if I really need stereo only the X4000 might be overkill, but there is something tempting in its sound. It is kind of hard to decide which should feel better or more pleasing to my ear.
I feel like I need more listening time to be 100% sure.