Thanks for the replies. I'm not a placebo effect kind of person, at all. I'm very perceptive technical and factual. If I didn't notice difference, I was ready to return the STR and pocket $4k. Read other reviews on these Polk a9s. Funny enough other people said the same thing as me. They were disappointed with how flat they sounded until they fed it a proper amp. There is undoubtedly more bass and better sound with the STR. On the same track, I'd have to crank the Denon to the point I thought I was gonna start clipping to get some bass. On the Anthem, even at grandma listening levels, the towers are giving a deep thud that goes through my chest. I wouldn't lie to you guys, just want to give me honest review.
Streaming on the Denon was another reason I returned it. I had choppy lagging,and occasionally "file format not supported" half way through a damn song and it just crashes. Don't get me wrong, the Denon is great for all the features you get for the money, but there's no comparison. Loan an STR or a higher end amp from your dealer on your setup if you run an AVR now and tell me you don't hear a difference.
Yes, as I said in my earlier post, I tried the Polk's with the STR right out of the box. No updates, no room correction loaded, nothing. (It takes like an hour to fully set this thing up and I just wanted to hear some tunes first) Before and after. Still sounded better than the Denon even without the EQ.
The STR DAC isn't as good as AVR DACs? Man.. Ask around, look it up. There's no comparison. They source these from _______ and usually cost thousands just for the DAC. look at the circuitry inside this unit, compare it to any AVR. Enough said.
I was skeptical of how much an amp/preamp could change the way your system sounded, try it for yourself. Another first hand example I have is, my friends BW 2 channel setup. Speakers alone were $30,000. He tried it on a low-midrange Yamaha, then Nakamichi, then Marantz, and finally to a McIntosh. He's never going back. Keep in mind this is a guy who does literally blind tests on equipment and songs, and can guess 9/10 between audio file quality and medium.
The Polk's are probably finding a nice new home in someone's living room........