Pizoni,
I do not know the Yam DV-C6770, but I have the Yam listed in my sig, as well as the 2900.
I guess I'm going to fall on both sides (or neither depending on your outlook) on this one.
The Yamaha has a perfectly acceptable picture by today's standards. In other words, very good.
Way better than the inexpensive Sony that it replaced, or the even less expensive Sony before that, and I can't remember what the first (free) one was.
But, it is certainly not the 2900.
My eyes see a vast difference between the two.

As to sound, it is a bit apples and oranges.
Playing the 2900 via analog inputs, so I'm using the DACs in the 2900.
The Yamaha is only connected via digital, so I am using the DACs in the Yamaha 2500.
Again, the Yamaha is very good. Very, very good for the money.
But the Denon is, to my ears, far, far superior.
I much prefer it to the Yamaha given how I am using them.

I've never hooked up the digital audio outputs on the Denon,
nor the analog outputs on the Yamaha, so, like I say, it is a bit of a stilted comparison.

you can find a good review of the Yamaha at Audioholics.com

Just my 2 cents.





Axioms; For when you've just Gotta have More Cowbell! 60s 150 350 8s 2is RX-V2500 DVD-C750 2900