Denon AVR-2312CI Receiver here we have placed the Manual for download

Denon AVR-2312CI 7.2-Channel Integrated Network A/V Receiver,as the mid-level model of the IN-Command Series, this receiver sets a new standard in 3D, Blu-ray, game console, and other entertainment device integration. It has 7 discrete 105-watt channels, dual subwoofer outputs, and multiple high-resolution audio formats. It also supports HDMI v1.4a. Enhanced by digital network audio/photo streaming capabilities, including support for AirPlay, mp3/WMA/WAV and FLAC HD audio, and Windows 7 compatibility, the AVR-2312CI is ready for network [...]

I know about 12 years ago I got my first product from Denon it was a Dolby Surround Receiver, hmm the product number I do not remember, but I would say it was in the Category as the 3312 is today, so not that bad. 

  GENERAL Denon Product AVR-4311CI AVR-3312CI Depth (inches) 15 15 Height (inches) 6.4 6.7 Width (inches) 17.1 17.1 Power Output; Watts Per Channel 140 125 Weight: In Pounds 38.2 lbs 26.8 Finish Black Black All Channels Rated @ 0.05 THD​ – All Channels Rated @ 0.08 THD – - THX Ultra2-Certified – -  SOUND MODES

DENON® DNP-720AE NETWORK AUDIO PLAYER OFFERS DRAMATICALLY EXPANDED DIGITAL MEDIA PLAYBACK, WITH AIRPLAY MUSIC STREAMING CAPABILITY AND MORE DLNA Allows Android Owners to Stream Digital Media Content; Offers Truly Elevated Sound Quality.

Upgrade for your top Denon Product Denon is offering a feature upgrade to the top A/V Surround components, the AVR-5308CI and the AVP-A1HDCI, including these feature enhancements to these great A/V surround products, ensuring them to be up to date.

With the Denon DN-X1700 Denon worked closely with some of the top professionals in the industry, gaining key input on its design / functionality of Mixers and whats needed. The results of this process is one of the best professional digital mixer.

Here a little presentation of the Denon DJ DN-S3700s where DJ Roonie is on the turntables if you can say that

Denon AVR-3312CI 7.2-Channel Integrated Network A/V Receiver puts you in command and that it now has real network options makes its a great reciever to a good price. Flagship model of the IN-Command Series, the AVR 3312CI sets a new standard in entertainment device integration, like 3D, blu-ray….. It features seven discrete 125-watt channels of equal power, dual subwoofer outputs, and multiple high-resolution audio formats for surround sound. It gots HDMI v1.4a, so you can [...]

Denon AVR-4311CI Receiver – Now here a little info about the Receiver which Featuring 7 HDMI inputs, with Denon’s high resolution video processor, which up converts normal video standard to 1080p HDMI, its including  HDMI 1.4a standard , which provides 3D pass-through, with Audio Return Channel. The HDMI upconversion allows for a single HDMI cable run to the TV and 2 HDMI outputs. AVR 4311CI including Dolby TrueHD and DTS-HD Master Audio,with Audyssey’s DSX surround [...]