Summary: I purchased the Denon AVR 891 receiver July 2011, to replace a Sony product, I purchased the Denon believing it was a superior product...but I continue having the same problem with the reciever shutting down when it reaches high volume , i live in a small 1 bdrm apartment so i don't play my music loud, out of courtesy to my neighbors..It only shuts down when a sudden increase in volume occurs in a song or a movie ...it is annoying..
Summary: I love this receiver! Replaced an old Kenwood amp that just wasn't cutting it. The Audessy setup is outstanding!! Will never buy a receiver without this option. Get it. You won't be disappointed!!
Summary: I had to return the unit as it would not pass the video or audio signal from my Samsung BD player (using HDMI). When I called Denon support, they confirmed that this is an issue, and they had no solution. My return cost me shipping (about $50) and restocking charges ( about $50 ) plus shipping on a replacement receiver, another $50. All told, I am out over $150 because I chose this unit.
Summary: Love the ease of use and the sound is so much better than the Onkyo 806 I replaced this unit with. The dynamics and details of the sound are stunning. I am very into musicisal characteristics and hearing small percussive sounds and details in my music. I was very taken aback by how accurate the sounds reproduction and the soundstage is plush for all kinds of musical types. The separation in movie tracks is also heads above the Onkyo 806.
Summary: This receiver has been a great product for me ever since I got it. The Audessey set up works very well and produces imaging way beyond what I expected. My old receiver was an analog Pioneer from 1998. This was also a good product, but the difference the digital hook ups make are astounding. If you are thinking about replacing an old receiver - believe me you will not be disappointed. This is especially true for surround structures as the signal is properly divided.
Summary: The audio on this receiver is second to none. I am extremely impressed with video upconversion from non-HD video sources. 3D Pass-thru works flawlessly. I would say this is the best receiver for the money out there...if it had two outputs for HDMI it would be PERFECT.
Summary: I'm not a Home Theater expert. I understand output wattage, etc. I chose this unit to replace a Panasonic BT200 HTIB that completely failed in less than 2 years. I decided to move to a component system with decent wattage. I didn't need to shake the neighborhood, but a wall or two in the house was ok. I've hooked this system up to leftover AR surround speakers from the Panasonic system, and I bought a Polk 12" active subwoofer for the "kick".
Summary: I've been building my sound system piecemeal, and this replaces a Sony receiver. The difference is like night and day-clear and crisp, the sound filling the room for the first time. The unit is easy to use, with everything going through it. Setup was easy with the microphone. I watch movies and listen to classical music.
Summary: The Denon AVR-891 is an average receiver. It has a lot of features, but delivers average sound, and set-up is not intuitive. The Audyssey Auto Setup did a good job of setting the speaker levels, but I was stunned at how bad the sound was after initial setup. I worked my way through the confusing Denon manual and the on screen adjustments, and after a time consuming process was able to achieve average sound quality.
Summary: So far so good. This is my first Denon product, but so far I'm impressed. I've gone from a home theater in a box to a powerhouse. There is no comparison. This unit so far has met all of my expectations.