Phillip D.

Call center in far east... unable to process English you speak.
One hour on hold times.
I will never use them again

What about Reliability? I bought a Denon AVR 4310 CI for well over $1000 and it lasted a total of 25 monthsgave me trouble multiple times before it just refused to stay on. It cost me $130 to get it diagnosed and they want over $500 to fix it. Denon refused to do anythingnot even pay half.
Their reputation is horrible, here are some buyers experiences on Amazon:

9 of 13 people found the following review helpful
1Poor quality control
ByNPon November 15,2014
Style Name: Receiver
I had high hopes, but they were dashed after 2 failed units in 2 months. The first one's power supply burned out after a few weeks use. The replacement unit had a messed up TV menu video signal when using its internet music feature. Its wireless is also very flakey and touchy. Anyway I must agree with the other reviewers that have had issues with Denon's quality. It is not what it used to be.

Caveat emptor.
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12 of 21 people found the following review helpful
1Glorified paperweight. Do not buy.
ByJ. Burgeron November 8,2014
Style Name: Receiver
Poor quality. Poor support. Very disappointed in Denon. I bought this to replace a Denon AVR2309 which was working fine. Why? Because of the wireless networking and Airplay. I have owned it for exactly 51 days and all wifi function (including Airplay) has stopped working. It will not see or connect to ANY wifi network. I tried it with two routers just to be sure (other devices connected to both of them just fine) and then contacted Denon. Did some troubleshooting to verify the wifi is dead, then she tells me, "Sorry, since you bought it online, there is no warranty." So basically, I spent $1,000.00 for new features that stopped working after seven weeks and the manufacturer tells me I'm out of luck. Buyer beware. Denon's quality is not what it used to be and they know it. That's why they refuse to stand behind their products.
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10 of 57 people found the following review helpful
1DO NOT BUY DENON.
ByN. P. "Cheap Buyer"on October 4,2014
Style Name: Receiver
The ethernet on the older version of the receiver died twice after a year. First time took to denon warranty repair person. The guy said it will take 8 weeks. (Really not kidding.) After 5 weeks he fixed it but only to die in very first day. Also the authorized warranty repair person said. Denon is no longer the same quality as it used to be. DENON AUTHORIZED REPAIR PERSON! Really disappointed. I did not expect this when you buy a 1000 dollar receiver. I expect it to just work for years not months.
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THESE KIND OF ISSUES NEED TO BE DISCUSSED. DENON IS NOW MADE IN CHINAA NATION NEVER KNOWN FOR QUALITY CONTROL OR QUALITY COMPONENTS.
BOTH MARANTZ AND DENON ARE MADE IN THE SAME FACTORY AND INTERNALLY ARE THE SAME.