B&W 804s too bright

As I am using the speakers for both HT and Stereo, quite a waste to use tube on HT.. any SS amps to recommend? I heard that Classe are good match for B&W.. any other brands?

I also realized that the sound got better and more tamed when I used it with grills on. Less intimidating and overwhelming. Is it a right feeling I am getting?

You might try changing the toe in out and taming the ceiling and side wall reflections as well as speaker distance. The emotiva an be bright. I say treat the room first.

McIntosh goes very well with B & W, esp the tubed amps. Tames the highs v well.

The suggestion to try Cardas cables is a good one to tame some of the harshness, but is only a step in the right direction. You will need to get rid of the class D Emotiva amp.
You have already said no to tubes, which I eventually went with, on a long journey to find the right gear for my hyper fetailed JM Lab/Focals speakers. I really liked the speakers and knew that I would eventually find a way to get the sound I heard in the store.
McIntosh might not be such a bad idea but they are expensive. I never could find a great deal on a Mac and ended up buying a real small, real old power, cosmetically challenged amp to use with my vintage Klipsch LaScalas. The 2505 was an early SS model that put out 50wpc. It has the channel gain pots you can use for balance or even as volume pots instead of a pre. If you do that you are limited to a single source.