I've had the AMP100VS installed for about a week now -- and also finally received the demo disks I ordered. Incidentally, I also added a Harmony 650 universal remote which makes things easier but to which I'm still getting used to -- and still programming... But THAT has made things a lot more convenient.
A couple of pics are included here of the complete room with full ATMOS positions shown. The pics aren't great, but the camera position is at the rear wall (next to the back surround) and at the front wall (behind the front mains and actually behind the ELAC DAES) so that all six YPAO measured seating positions can (almost) be seen. For review, that total distance front to back is about 26 feet.
The amp acts basically the way I expected -- pretty transparent change except that I now have an amp that comes on when my A3060 is turned on. (It's probably just psychological, but I also "feel" that the output of this amp is cleaner. The specs are low THD and music just "sounds" better. Yeah, real head case!
I spent a good 10 minutes talking with Stuart from AudioSource about the volume setting for the amp. Although I'm not keen on setting any amp volume to max, based on his input I think that's fine. Basically, the amp will never be under full load, regardless of the input power. So I set the control at the max 12 dot (and for my own comfort, backed it off to 11.5
), which allows the Yamaha pre-out level to be comparable for all speaker outs when running YPAO.
But this class D amp does output some heat. It's not extreme, but way more than my A3060 and I'm happy to trigger my Z-Fan from it. Also of note is that the amp is about half the height of the RX-V373 I was using, which therefore allowed me to go back to a living room setup that looks more appealing instead of having the huge block of black components sitting in the unit in front of me. Re-inserting the red oak shelf provides a little comforting release from BLACK. Compare the pic here to the one in this post #26
on p1. (My wife is VERY pleased.)
Ok, so this day looks a little foggy(?) in the pics... But zoom a little to see two things on the right side. The wall unit with two shelves in the now broken up black block (which I like) and the center sofa table which has the wrap for my YPAO setup sitting on it. The two sofa seats farthest away from the TV are positions 4 (center) and 3 (end) of my YPAO setup. In the center of the room is the MLP with seat 2 to the left. Seats (YPAO positions) 5 and 6 are the two dining table seats that are set behind the MLP. From an ATMOS perspective the MLP and seat 5 (just behind) are the best, most ideal sound perspective. Somewhat amazingly to me, seats 2 and 3 to each side still provide an excellent ATMOS sound bubble -- it's just that they are at the respective sides of that bubble. With the circling helicopter demo, the listener hears the chopper circle around the room, but from the perspective of their seat. I had not really appreciated how marvelously ATMOS creates the sound immersion before hearing that demo.
From the front, the left main is the black block in the bottom center. Look carefully and you can see the YPAO microphone stand on the back of the MLP. (I also used that to make "head height" with those dining room chairs.
I found the demo discs to be very useful. The best to me is the Atmos 2015 Nov with the audio tracks including the helicopter that is frequently referenced. In my room, it's not a perfect circle -- nor is the room a real square for the Atmos speakers. Instead, the chopper circles in a more oval pattern back around front and back. The other disc is the Reelwood demos. That one is little disappointing because most of the "DTS" demos are DTS HD MA rather than DTS:X. The DTS:X are music videos -- very good, interesting and, at least to me, a little erratic in audio quality. Of course several are late-60s re-masters of live concerts, so they started with less than ideal material. I have found that the effect for these with my Atmos Scene is as good or better than with my DTS:X Scene setup. I found the DTS:X Scene with "Heights" is more like the "bright" sound that some describe as characteristic of Yamaha (though that is not true). The Atmos Scene does not seem that way at all. But I still have a lot more listening and testing to do...