Denon AVRX6400 Atmos AV Receiver

Denon AVRX6400 (Black)

Atmos AV Receiver

In stock
£1,799

*Save £100 on speaker packages £500 - £999 when bought with any AV Receiver. Using code SPKRPACK100

*Save £200 on speaker packages over £1000 when bought with any AV Receiver. Using code SPKRPACK200

*Not in conjunction with any other offer/promotions. Terms & conditions apply.

“A terrifically composed, articulate and confident AV receiver that delivers captivating home cinema performance for the price.”
What Hi-Fi Award Winner 2017


11.2 channels or 9.2.2/7.2.4 Atmos channels for the most immersive surround sound
For the ultimate, reference Dolby Atmos system, this Denon lets you configure four ceiling or Atmos-enabled speakers as well as full 7-channel surround sound. Alternatively, use two Atmos speakers and enjoy a broad soundstage with 'front wide speakers' forming a 9.2.2 system. If you don't fancy a Dolby Atmos specific system but want the most immersive sound possible, go for an 11.2 configuration. This offers 7.2 sound with the addition of front width and front height speakers.

11-channel AVR
To make the most of the 11-channel processing, the AVRX6400H features a superb quality 11-channel amplifier. Denon’s finest 11-channel amp built into an AV receiver boasts discrete monolithic design. This means that each of the 11 amps have their own circuit board and components. Separation to this level gives ultra-low levels of distortion and reference quality channel precision. The result is home cinema sound that gets closer than ever to the finest cinemas.

HEOS built-in - for the finest multi-room audio
HEOS multi-room music systems connect together by dual-band Wi-Fi, making them easy to set up with your existing home network. Up to 32 HEOS units can be set up at one time, ensuring even the largest of homes are covered for multi-room music. With HEOS already built-in, the AVRX6400H is ready to go as a single 'zone' without any further adaptors!

Control it all with the HEOS app
Once you've set up your HEOS speaker system, you can stream music effortlessly via the dedicated HEOS app. Available for Apple iOS and Android, the app not only lets you stream your stored music but also Internet radio services and popular streaming services such as Spotify, Tidal, Napster and Deezer.

Powerful DSP with AL32 Processing Plus for ultra-low distortion
Featuring no fewer than four, high speed, fourth generation SHARC DSP processors, the AVRX6400H has ample processing power to decode the most complex of soundtracks. Denon's AL32 Processing provides ultra-high resolution digital audio filtering and precision tailoring of the main channels to give pin-point precision and the most natural sound possible.

Auro-3D sound sensation
Auro-3D is the latest surround sound sensation to put you at the heart of the action. Using powerful processing, Auro-3D works with any signal - right down to mono - and recreates a three-dimensional sound stage. For the very best effect, use with height and overhead channels and native Auro-3D material for scintillating surround sound.

Immerse yourself in sound, with Dolby Atmos and DTS:X
Dolby Atmos uses ceiling or upwards firing speakers to produce a multi-dimensional, immersive sound that's a match for the finest cinemas. DTS:X literally pushes the boundaries of what you can expect from home cinema. This highly sophisticated processor renders images in three dimensions that conventional processing can't match. It also offers other advantages such as the ability to boost the spatial effect of conventional DTS and easily adapts with your existing speaker configuration.

Optimised for 4K UHD and HDR
The AVRX6400H supports HDCP 2.2, HDR and BT.2020 via HDMI, which means you can play UHD Blu-ray discs and stream UltraHD video. It's also equipped with UHD 4K upscaling, giving you the most detailed picture on your 4K TV from all sources. The HDMI sockets allow 4K pass-through, for hassle-free switching and viewing without the receiver needing to be turned on.

High-Resolution audio compatible
As well as offering an intense movie experience, the Denon AVR-X6400H is also compatible with High-Resolution Audio. This offers a sound that's far more natural sounding than standard audio. The Denon AVRX6400H supports a wide range of HiRes format files including DSD (2.8/5.6MHz), FLAC, ALEC, AIFF and WAV. It even supports gapless playback for music free from glitches.

Bluetooth, AirPlay, DLNA and built-in wi-fi for the complete networking experience
With both Bluetooth and AirPlay connectivity it's easy to connect up all your smartphones, tablets and compatible lap/desktops and stream music wirelessly. The AVRX6400H also comes with Wi-Fi, Internet radio and DLNA. Simply connect to your home network via Ethernet or Wi-Fi and access thousands of Internet radio sites via vTuner as well as subscription services such as Spotify Connect. DLNA 1.5 compatibility lets you stream from other sources such as your laptop or NAS drive.

Audyssey - making set-up precise and simple
Featuring a comprehensive Audyssey suite of DSP (Digital Sound Processing) functions, the AVRX6400H can be set-up and operated with precision. The package includes Audyssey's MultEQ XT32 technology. The XT32 version of this automatic measuring and set-up device features extra modes and offers the option to measure from eight points for super-accurate room measuring.

Take your home cinema to a whole new dimension, with the Denon AVRX6400H.

6 Year Supercare £179.85

Add our Supercare to your basket when you check out. We'll cover your items for 6 years and give you your money back if unused.

Lowest price guaranteed!

We’ll beat any genuine advertised price, even from the web & give you up to £100!

We're confident that our prices are amongst the very keenest out there, so we've made it as easy as pie to qualify for our Price Beat. Richer Sounds also guarantees to beat web prices, and Price Beat is even valid for 7 days after purchase, so if you've seen a cheaper price, let us know, and we'll happily beat that price by up to £100!

Products must be brand new, boxed, carry a comparable guarantee and be in stock at time of purchase. Richer Sounds price used to compare will be net of any voucher / trade in discounts.
T&Cs apply

Free UK delivery

Next day delivery and timed options available. Please see checkout for further details.

Buy now, pay later available
on purchases over £500

We offer 6 month interest free options. Call or ask in-store for details

For purchases over £500, pay a 10% deposit now and the balance in 6 months. Pay the balance in full before the end of the 6 months and there is no interest to pay whatsoever, just a one-off settlement fee of £29. Find out more

*Save £100 on speaker packages £500 - £999 when bought with any AV Receiver. Using code SPKRPACK100

*Save £200 on speaker packages over £1000 when bought with any AV Receiver. Using code SPKRPACK200

*Not in conjunction with any other offer/promotions. Terms & conditions apply.

“A terrifically composed, articulate and confident AV receiver that delivers captivating home cinema performance for the price.”
What Hi-Fi Award Winner 2017


11.2 channels or 9.2.2/7.2.4 Atmos channels for the most immersive surround sound
For the ultimate, reference Dolby Atmos system, this Denon lets you configure four ceiling or Atmos-enabled speakers as well as full 7-channel surround sound. Alternatively, use two Atmos speakers and enjoy a broad soundstage with 'front wide speakers' forming a 9.2.2 system. If you don't fancy a Dolby Atmos specific system but want the most immersive sound possible, go for an 11.2 configuration. This offers 7.2 sound with the addition of front width and front height speakers.

11-channel AVR
To make the most of the 11-channel processing, the AVRX6400H features a superb quality 11-channel amplifier. Denon’s finest 11-channel amp built into an AV receiver boasts discrete monolithic design. This means that each of the 11 amps have their own circuit board and components. Separation to this level gives ultra-low levels of distortion and reference quality channel precision. The result is home cinema sound that gets closer than ever to the finest cinemas.

HEOS built-in - for the finest multi-room audio
HEOS multi-room music systems connect together by dual-band Wi-Fi, making them easy to set up with your existing home network. Up to 32 HEOS units can be set up at one time, ensuring even the largest of homes are covered for multi-room music. With HEOS already built-in, the AVRX6400H is ready to go as a single 'zone' without any further adaptors!

Control it all with the HEOS app
Once you've set up your HEOS speaker system, you can stream music effortlessly via the dedicated HEOS app. Available for Apple iOS and Android, the app not only lets you stream your stored music but also Internet radio services and popular streaming services such as Spotify, Tidal, Napster and Deezer.

Powerful DSP with AL32 Processing Plus for ultra-low distortion
Featuring no fewer than four, high speed, fourth generation SHARC DSP processors, the AVRX6400H has ample processing power to decode the most complex of soundtracks. Denon's AL32 Processing provides ultra-high resolution digital audio filtering and precision tailoring of the main channels to give pin-point precision and the most natural sound possible.

Auro-3D sound sensation
Auro-3D is the latest surround sound sensation to put you at the heart of the action. Using powerful processing, Auro-3D works with any signal - right down to mono - and recreates a three-dimensional sound stage. For the very best effect, use with height and overhead channels and native Auro-3D material for scintillating surround sound.

Immerse yourself in sound, with Dolby Atmos and DTS:X
Dolby Atmos uses ceiling or upwards firing speakers to produce a multi-dimensional, immersive sound that's a match for the finest cinemas. DTS:X literally pushes the boundaries of what you can expect from home cinema. This highly sophisticated processor renders images in three dimensions that conventional processing can't match. It also offers other advantages such as the ability to boost the spatial effect of conventional DTS and easily adapts with your existing speaker configuration.

Optimised for 4K UHD and HDR
The AVRX6400H supports HDCP 2.2, HDR and BT.2020 via HDMI, which means you can play UHD Blu-ray discs and stream UltraHD video. It's also equipped with UHD 4K upscaling, giving you the most detailed picture on your 4K TV from all sources. The HDMI sockets allow 4K pass-through, for hassle-free switching and viewing without the receiver needing to be turned on.

High-Resolution audio compatible
As well as offering an intense movie experience, the Denon AVR-X6400H is also compatible with High-Resolution Audio. This offers a sound that's far more natural sounding than standard audio. The Denon AVRX6400H supports a wide range of HiRes format files including DSD (2.8/5.6MHz), FLAC, ALEC, AIFF and WAV. It even supports gapless playback for music free from glitches.

Bluetooth, AirPlay, DLNA and built-in wi-fi for the complete networking experience
With both Bluetooth and AirPlay connectivity it's easy to connect up all your smartphones, tablets and compatible lap/desktops and stream music wirelessly. The AVRX6400H also comes with Wi-Fi, Internet radio and DLNA. Simply connect to your home network via Ethernet or Wi-Fi and access thousands of Internet radio sites via vTuner as well as subscription services such as Spotify Connect. DLNA 1.5 compatibility lets you stream from other sources such as your laptop or NAS drive.

Audyssey - making set-up precise and simple
Featuring a comprehensive Audyssey suite of DSP (Digital Sound Processing) functions, the AVRX6400H can be set-up and operated with precision. The package includes Audyssey's MultEQ XT32 technology. The XT32 version of this automatic measuring and set-up device features extra modes and offers the option to measure from eight points for super-accurate room measuring.

Take your home cinema to a whole new dimension, with the Denon AVRX6400H.

Active Subwoofer Output Yes
Apple AirPlay Yes
Audio Inputs 6
Bluetooth Yes
Channels 11.2/9.2.2/7.2.4
Coaxial Inputs 2
Coaxial Outputs No
Component 2 in/1out
Dimensions WxDxH 434 x 383 x 167
Dimensions WxHxD (mm) 434 x 167 x 393
DLNA Compliant No
Dolby Atmos Yes
Dolby ProLogic Surround Dolby Surround
DTS Yes
Eco Friendly No
HDMI Audio Yes
HDMI text 8 In (one front)
HDMI Zone Out Yes
HDR Compatible HDMI Yes 7 in/2 out
Internet Radio Services Yes
4K Upscaling yes
Multi Channel Input No
Multiroom Zone 2/3 Active/Passive + HEOS
NFC No
Optical Digital Inputs 2
Optical Inputs 2
Optical Outputs No
Phono Input Yes - MM
Power Consumption- Normal Use 750
Power Consumption - Standby 1
Power Output - Watts per CH 140 x 11
Remote Control yes
App Control Yes
Tuner Radio FM/AM
USB 1
Weight (KG) 15
Wi-Fi Built In yes
Wireless Connection Yes
Brand Denon
Colour Black
Rated 5 out of 5 by from Best that i have owned. I bought this amp online from Richer Sounds, and i can honestly say its the best I've had for immersive sound, and I'm not using Dolby Atmos yet, i had pioneer sx59 great, also a Yamaha 3060, which was very good but did not envelope you in the sound as the dennon does, i cannot believe there is a better amp for the money if i had one criticism and i would be nit picking it could sound slightly bolder but I'm happy its bold enough.
Date published: 2018-06-14
Rated 5 out of 5 by from Excellent Demon receiver great sound quality Bought this from my local Richer Sounds products so pleased with just great on sky movies or a 4K disk amazing sound
Date published: 2018-04-26
Rated 5 out of 5 by from Great Picture and Sound, eventually. Set up receiver using the online instruction manual, as one is not supplied, just a quick set up guide. I am very happy with the picture using 4K equipment and the ATMOS sound steering effects are great. Unfortunately using a dedicated cd player utilising the CD input or playing records the receiver sounds laid back and very digital. I have found that if you select Pure Direct for all inputs except HDMI, then the sound is much more open and spacious. I am now using a OPPO 4K player and found that the best results for watching 4K or DVD I select BLURAY on the receiver which uses a HDMI cable, but when I want to listen to CD, again using the OPPO player I have connected RCA cables between the receiver and the OPPO player and then select CD on the receiver and (PURE DIRECT) and this has dramatically improved the sound of CD`s. Basically the only input on the receiver where I don`t use PURE DIRECT is Blu ray, even the internet radio sounds better in PURE DIRECT. Of note during the set up process you have to set up your speaker using the built in software and supplied microphone, this has caused me a lot of headaches as it kept telling me my front speakers had incorrect phase (which was a load of bull). Through much head scratching I found out that because my front speakers are 3 way then the set up software did not like them, as soon as I plugged in a set of 2 way speakers the system was happy again. I eventually set up the speakers manually and ignored the automatic set up.
Date published: 2018-04-23
Rated 5 out of 5 by from Great sound well worth the money I've had the Denon Avr X6400 a coupe of weeks now, great surround sound from this unit all channels clearly defind. The unit is easy to set up but with so many features it will take a little time to work them all out. Stereo sound is clear and each channel clearly seperated, I have this unit connected to a Monitor Audio Bronze 6 AV system and I am very pleased with the sound produced with this set up. Thanks to Richers sounds at Milton Keynes for their help putting this package together for me.
Date published: 2018-04-20
Rated 5 out of 5 by from Great piece of kit This replaced an older Denon AV amp to provide 4k capability. It was easy to set up and does pretty well controlling other devices. Great sound and design, though still exploring all the features.
Date published: 2018-04-15
Rated 5 out of 5 by from Worth Every Penny Bought to replace an ageing Sony STR-DA6400ES, Mainly for the 4K switching. I'm happy with the performance and the ease of set up, its a very articulate and insightful listen.
Date published: 2018-03-22
Rated 5 out of 5 by from great sound Looks good, easy to connect up and well worth the effort
Date published: 2018-03-10
Rated 5 out of 5 by from Superb sound stage Recently purchased this to replace a Pioneer receiver as I wanted to move from my 7.1 system upto a 7.1.4 atmos setup. Even before the addition of the ceiling speakers the result from the Denon was outstanding. Once the additional ceiling speakers were in place the resulting sound moved to a completely new level. So far the Denon has performed impeccably with no distortion as mentioned in a previous review. I am using Kef T301's at listening level and T101's at ceiling level and the Denon is driving these superbly. The Denon is expensive but so far has been worth every penny. Go out and get one.
Date published: 2017-12-24
  • y_2018, m_6, d_17, h_5
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_10
  • loc_en_GB, sid_DENO-AVRX6400-BLK, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_richersounds
  • bvseo_sdk, p_sdk, 3.2.0
  • CLOUD, getReviews, 65.17ms
  • REVIEWS, PRODUCT
£1,799
Denon Atmos AV Receiver is rated 4.6 out of 5 by 10.
  • y_2018, m_6, d_17, h_5
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_10
  • loc_en_GB, sid_DENO-AVRX6400-BLK, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_richersounds
  • bvseo_sdk, p_sdk, 3.2.0
  • CLOUD, getAggregateRating, 5.17ms
  • REVIEWS, PRODUCT

6 Year Supercare £179.85

Add our Supercare to your basket when you check out. We'll cover your items for 6 years and give you your money back if unused.

6 YEAR SUPERCARE COSTS JUST £9.99 ON ALL ITEMS UNDER £100, OR 10% OF PURCHASE PRICE ON ANYTHING OVER £100.

We think you’ll agree that our Supercare guarantee offers fantastic value. What’s more, if you don’t use our it in the 6 year period, we’ll refund the cost of it. You really can’t say fairer than that!
Plus, if we can’t fix a fault, we will give you a like-for-like replacement.
Find out full details here.

Lowest price guaranteed!

We’ll beat any genuine advertised price, even from the web & give you up to £100!

We're confident that our prices are amongst the very keenest out there, so we've made it as easy as pie to qualify for our Price Beat. Richer Sounds also guarantees to beat web prices, and Price Beat is even valid for 7 days after purchase, so if you've seen a cheaper price, let us know, and we'll happily beat that price by up to £100!

Products must be brand new, boxed, carry a comparable guarantee and be in stock at time of purchase. Richer Sounds price used to compare will be net of any voucher / trade in discounts.
T&Cs apply

Free UK delivery

Next day delivery and timed options available. Please see checkout for further details.

Buy now, pay later available
on purchases over £500

We offer 6 month interest free options. Call or ask in-store for details

For purchases over £500, pay a 10% deposit now and the balance in 6 months. Pay the balance in full before the end of the 6 months and there is no interest to pay whatsoever, just a one-off settlement fee of £29. Find out more