Denon AVR-X6400H (UK version)
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Denon AVR-X6400H was introduced in 2017. It is equipped with 11 channel amplifier and is capable of 11.2 maximum channel processing.
We evaluated the Receiver and gave 93 overall score out of 100. Our ranking system is based on the amplifier specifications, audio and video features, connectivity, multizone capabilities, radio and many other details.
Amplifier score is based on power ratings, minimum impedance load, power supply, transformer type, total harmonic distortion, damping factor, signal to noise ratio and other small details. Audio score depends on the number of channels, front wide channel support, maximum channel processing, support of audio formats, DAC specifications, room calibration algorithm... Video score is based on HDR, Dolby Vision and video signal passthrough and upscaling, analog to HDMI upconversion. Connectivity score is defined from all wired and wireless inputs and outputs, internet and bluetooth connections, HEOS, SONOS and others. Multizone score depends on the number of zones with their outputs. Radio score is evaluated form digital radio support and analog tuner with its frequency range, signal to noise ratio, harmonic distortion...
Pros and Cons
In this section we present pros and cons of Denon AVR-X6400H.
|👍 Certified 4 Ω Performance|
|👍 Bi-amp Capability|
|👍 Many Channel Processing|
|👍 D.D.S.C. HD Digital|
|👍 Alpha Processing|
|👍 Dolby Atmos|
|👍 Dolby TrueHD|
|👍 Dolby Digital Plus|
|👍 Dolby Surround Upmixer|
|👍 Dolby Digital EX|
|👍 DTS Neural:X|
|👍 DTS Virtual:X|
|👍 DTS-HD Master Audio|
|👍 DTS-HD High Resolution Audio|
|👍 DTS 96/24|
|👍 DTS Express|
|👍 Auro 3D with Auro-Matic Upmixer|
|👍 High Resolution Music Playback via USB and/or Network|
|👍 Gapless Playback|
|👍 DSD via HDMI|
|👍 DSD via USB|
|👍 DTS Dialog Control|
|👍 Dialog Enhancement|
|👍 Dialog Level Adjustment|
|👍 Dialog Normalization|
|👍 Compressed Music Enhancer|
|👍 Audyssey Dynamic EQ|
|👍 Audyssey Dynamic Volume|
|👍 Audyssey LFC|
|👍 Audyssey Sub EQ HT|
|👍 Auto Speaker Calibration System with Mic.|
|👍 Audyssey App Support|
|👍 Optimized Bass Redirection|
|👍 Bass Sync|
|👍 BT.2020 color space|
|👍 Dolby Vision|
|👍 Auto Low Latency Mode Pass-through|
|👍 3-D Ready|
|👍 4K or 8K Video Passthrough|
|👍 4K or 8K Signal Upscaling|
|👍 Analog To HDMI Upconversion|
|👍 DLNA 1.5|
|👍 Works with Amazon Alexa|
|👍 New HDCP Version|
|👍 Many HDMI Inputs|
|👍 Many HDMI Outputs|
|👍 USB Input|
|👍 Many Analog Audio Line Inputs|
|👍 Phono Input|
|👍 Composite Video Inputs|
|👍 Composite Video Outputs|
|👍 Component Video Inputs|
|👍 Component Video Outputs|
|👍 Analog Pre-Outs|
|👍 Detachable Power Cord|
|👍 Analog Tuner|
|👎 No Front Wide Channel Support|
|👎 No Dolby Atmos Height Virtualization|
|👎 No IMAX Enhanced|
|👎 No High-resolution Music Enhancer|
|👎 No HDR10+|
|👎 No Chromecast Built-In|
|👎 Does Not Work with SONOS|
|👎 No Multi-Channel Input|
|👎 No Pandora|
|👎 No SiriusXM Internet Radio|
|👎 Old Bluetooth Version|
Major Changes from its predecessor
Here we are comparing Denon AVR-X6400H to its predecessor AVR-X6300H and displaying the major changes.
|UPGRADES||Denon AVR-X6400H||vs||Denon AVR-X6300H|
|D.D.S.C. HD Digital||32-bit||vs|
|Alpha Processing||AL32 Processing Plus||vs||AL24 Processing Plus|
|DTS Virtual:X||via firmware update||vs|
|Auro 3D with Auro-Matic Upmixer||Built-In||vs|
|Enhanced Audio Return Channel (eARC)||vs|
|Wi-Fi Standard||IEEE 802.11 a/b/g/n||vs||IEEE 802.11 b/g/n|
|DOWNGRADES||Denon AVR-X6400H||vs||Denon AVR-X6300H|
|SiriusXM Internet Radio||vs|
For more detailed comparison between the models please visit Denon AVR-X6400H vs Denon AVR-X6300H.
Denon AVR-X6400H has 11 channel amplifier and delivers 140 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and also has a stable performance at 4 Ω load.
The Receiver has 4K passthrough up to 60p and 4K upscaling up to 60p. It can bypass HDR10, Dolby Vision.
High-dynamic-range (HDR) video has greater dynamic range than standard-dynamic-range (SDR) video with brigter whites and deeper blacks. HDR10 was announced on August 27, 2015, by the Consumer Technology Association and uses the wide-gamut Rec. 2020 color space. It sends static metadata via video stream to the TV which calibrates its screen brightness and color according to that. HDR10 supports up to 1000 nits of brightness and 10-bit color which corresponds to 1024 shades of the primary RGB colors.
Dolby Vision is an update to HDR10 by adding dynamic metadata that can be used to more accurately adjust brightness levels up to 10,000 nits maximum brightness on a scene-by-scene or frame-by-frame basis and supports up to 12-bit color depth (4096 shades of RGB) and 8K resolution.
Dolby Atmos and Dolby Surround upmixer
Denon AVR-X6400H supports Dolby Atmos with its Dolby Surround upmixer. It can be configured upto 7.1.4 channels using internal amplifiers.
Dolby Atmos is the first cinematic audio format in which sounds exist as individual entities, called audio objects. In Dolby Atmos, any sound - the helicopter, a car screeching around a corner, a melodic bird call - can exist as an independent audio object, free of channel restrictions. They can be precisely placed and moved anywhere in your room, including overhead, to flow above and around you in three-dimensional space. Through the use of audio objects, overhead sound, and all the richness, clarity, and power of Dolby sound, Dolby Atmos turns your room into an amazing place for entertainment. You'll feel like you're inside the action, in ways you've never experienced before.
Dolby Atmos for the home represents every sound in the original cinema mix as an audio object. Extensions to the Dolby Audio™ codecs, along with an advanced scalable algorithm, allow Dolby Atmos to be delivered via Blu-ray Disc and streaming media. A spatially-coded substream is added to Dolby TrueHD or Dolby Digital Plus. A Dolby Atmos audio/video receiver (AVR) adapts the cinema experience to your home theater from seven speakers to as many as 34 in 24.1.10 configuration, recreating the original artistic concept. The format supports up to 128 simultaneous independent audio objects in a mix for rich, realistic, and breathtaking sound. It recreates the director's original concept through descriptive metadata to provide customized playback for home theater and delivers sounds above you through overhead speakers, special upward-firing Dolby Atmos speakers, or a Dolby Atmos enabled sound bar.
If the content is not mixed in Dolby Atmos then the Dolby surround upmixer will expand the audio to all channels including ceiling speakers. The upmixer has replaced the Dolby Pro Logic II family with improved upmixing algorithms.
DTS:X and Neural:X upmixer
Denon AVR-X6400H supports DTS:X with its Neural:X upmixer. It can be configured upto 7.1.4 channels using internal amplifiers.
A technique used in DTS:X is similar to the one used in Dolby Atmos. Instead of a fixed number of channels, DTS:X defines object locations from the listener in polar coordinates. An a/v receiver then dynamically renders sound according to the current speaker configuration. The speaker layout employed by DTS:X is the sum of Dolby Atmos and Auro-3D. It has standard 7.1 channel base layer, a 5 channel height layer above the base layer on the front and side walls, and 3 rows of speakers on the ceiling.
DTS Neural:X is a new upmixer that can take non DTS:X content and upmix it to the DTS:X speaker layout. It has replaced the DTS Neo family with improved flexibility.
Auro-3D with its Auro-Matic upmixer
Denon AVR-X6400H supports Auro-3D and its Auro-Matic upmixer out of the box or after free firmware update. Auro-3D is an immersive 3D audio format developed by the Belgium-based company Auro Technologies. It consists of three layers of sound - surround, height and overhead ceiling. The base horizontal layer uses 5.1 or 7.1 format, the height layer is on top of the base layer and its information is extracted from the standard 5.1 surround PCM carrier. The a/v receiver decoder then extracts this information during playback. In home cinema Auro-3D comes with different listening formats - Auro 9.1, Auro 10.1 with added Top Ceiling channel ("Voice of God"), Auro 11.1 with added Front Height Center channel, and Auro 13.1 with added Left Rear Surround & Right Rear Surround channel. Auro-Matic upmixer takes non Auro-3D sound and upmixes to the current speaker configuration.
Denon AVR-X6400H has 32 bit D.D.S.C (Dynamic Discrete Surround Circuit). A single IC chip is generally used in processing A/D, DSP, and D/A conversions that are vital to sound quality. The D.D.S.C. uses separate components to process the important sections of the A/D, DSP, and D/A conversions and therefore significantly improves signal processing capability and performance. In addition, the approach of developing and incorporating high-quality dedicated elements in the sections that configure the circuitry makes it easier to develop a high-grade, advanced surround circuit compared with the method where all processing is concentrated within a single chip. Denon’s proprietary digital audio technology that had for many years been developed for pure Hi-Fi components is now also alive in each block of the D.D.S.C.
Denon AVR-X6400H comes with Audyssey Dynamic EQ, Audyssey Dynamic Volume, Audyssey LFC and Audyssey Sub EQ HT.
Audyssey Dynamic EQ selects the best possible frequency response and surround volume levels moment-by-moment. This ensures that the bass response, tonal balance and surround impression remain constant despite changes in volume. This is the first technology that carefully combines information from incoming source levels with actual output sound levels in the room, a pre-requisite for delivering a dynamic volume solution.
Your Listening experience can be greatly diminished when there are significant shifts in volume between television programs, commercials and within the program material itself. When this happens you must constantly adjust the volume to maintain your desired listening level. Audyssey Dynamic Volume monitors the volume of program material moment-by-moment and automatically adjusts it, maintaining the desired listening level for all content while optimizing the dynamic range to preserve impact.
While high frequencies are easily stopped by walls low frequencies pass right through. After identifying the frequency range that most readily passes through walls Audyssey developed a technique, called Audyssey LFC (Low Frequency Containment) that reduses the volume at those frequencies and applies psychoacoustic processing to restore the perception of low bass for listeners in the room. The result is no more angry neighbors and no loss of enjoyment for listeners.
Placing two subwoofers in the room can cause problems, they can create standing waves or even cancel each other out resulting in even less bass than a single sub can produce. Audyssey Sub EQ HT allows two subwoofers to be properly used in a home theater system. The process is automated and takes only a few minutes. The result is rich, full bass for everyone in the room.
Denon AVR-X6400H comes with Audyssey MultEQ XT32 room correction system and includes the calibration microphone. It also supports Audyssey App.
Audyssey is an acoustic measurement technology which automatically restores the acoustic distortion caused by the acoustic behaviour of a room with only a push on a button. Audyssey equalization provides an clear, accurate, natural sound with voices and dialog that become focused and intelligible, restoring the musical balance. Musical instruments and sound effects become precisely localized and the surround soundstage is made seamless and enveloping.
Denon AVR-X6400H can be connected to internet using ethernet cable or built-in wi-fi adapter. It can also connect to bluetooth devices via built-in bluetooth adapter. The Receiver works with Amazon Alexa and supports AirPlay 2. It has 8 HDMI inputs and HDCP 2.2 copy protection. There is a phono input with built-in phono stage for connecting the cartridge output of the turntable directly to the Receiver. There are 11.2 channel analog pre-outs for external amplification.
Front panel has HDMI, USB, Composite and L/R Audio inputs.
Here we list all the available features and specifications of Denon AVR-X6400H.
|Front Wide Channel Support|
|Continuous 6 Ω Rated|
|Certified 4 Ω Performance|
|Mono Block Power Amplifier Construction|
|Digital Signal Processing (DSP) Engine||4 powerful high speed 4th generation SHARC DSP processors|
|Maximum Channel Processing||11.2|
|D.D.S.C. HD Digital||32-bit|
|Alpha Processing||AL32 Processing Plus|
|Air Studios Monitor Certification|
|Dolby Atmos||up to 7.1.4|
|Dolby Atmos Height Virtualization|
|Dolby Digital Plus|
|Dolby Surround Upmixer|
|Dolby Pro Logic|
|Dolby Digital EX|
|DTS:X||up to 7.1.4|
|DTS Virtual:X||via firmware update|
|DTS-HD Master Audio|
|DTS-HD High Resolution Audio|
|DTS-ES||Discrete 6.1, Matrix 6.1|
|Auro 3D with Auro-Matic Upmixer||Built-In|
|Music Playback via USB||MP3, WMA, AAC, Apple Lossless, WAV, FLAC, DSD|
|High Resolution Music Playback via USB and/or Network||up to 192 kHz|
|High Resolution Audio Formats via USB||Apple Lossless, WAV, FLAC, DSD|
|Multi-Channel Music File Playback via USB|
|DSD via HDMI||2-ch/Multi-ch Input|
|DSD via USB||2-ch Input|
|DSD to PCM Converter|
|DTS Dialog Control|
|Dialog Level Adjustment|
|Compressed Music Enhancer|
|High-resolution Music Enhancer|
|Audyssey Dynamic EQ|
|Audyssey Dynamic Volume|
|Audyssey Sub EQ HT|
|Pure Direct Mode|
|Independent Dual Subwoofer Output|
|Auto Speaker Calibration System with Mic.||Audyssey MultEQ XT32|
|Audyssey App Support|
|Optimized Bass Redirection|
|Video Signal Type||NTSC/PAL|
|Video Signal Format (Video Covnersion)||NTSC/PAL|
|BT.2020 color space|
|HLG (Hybrid Log Gamma)|
|QMS (Quick Media Switching)|
|ALLM (Auto Low Latency Mode)|
|VRR (Variable Refresh Rate)|
|QFT (Quick Frame transport)|
|Video Signal Passthrough||up to 4K 50/60Hz 4:4:4|
|Video Signal Upscaling||up to 4K 50/60Hz 4:4:4|
|Analog To HDMI Upconversion||Component, Composite|
|Component Video Upscaling|
|Analog to Analog Video conversion|
|Component Video Maximum Resolution||1080p|
|isf Certified Calibration Control|
|Works with Amazon Alexa|
|Works with SONOS|
|Apple Product Connection||iPod, iPhone and iPad|
|Remote App||Denon 2016 AVR Remote App for iOS and Android devices and Kindle Fire|
|InstaPrevue Input Source Prevue|
|Bluetooth Headphone Transmission|
|HDMI Input||8 (1 front)|
|HDMI Output||3 (2 for MAIN, 1 for ZONE2)|
|USB Input||1 (Front) for iPod/iPhone and USB memory|
|USB DC Out Port|
|Analog Audio Line Input||7 (1 front)|
|Analog Audio Line Output|
|Coaxial In/Out||2 /|
|Composite Video Input||5 (1 front)|
|Composite Video Output||1|
|Component Video Input||2|
|Component Video Output||1|
|Front A/V Inputs||HDMI, USB, Composite, L/R Audio|
|Headphone Out||6.3 mm|
|Powered Zones||2 and 3|
|Zone 2||HDMI, Component, Composite, Pre Out|
|Zone 3 Outs||Pre Out|
|+12V Trigger Output||2|
|Remote (IR) Input/Output||1 / 1|
|On-Screen Display||Advanced Graphic User Interface|
|FL Display||2 lines|
|Pre-programmed / Learnable / LCD Display||/ /|
|Detachable Power Cord|
|Denon Link HD|
|Quick Select plus / Quick Select||/|
|Analog Tuner||FM/AM with RDS|
|SiriusXM Internet Radio|
|Large Speaker Terminals||11|
|Color-Coded Speaker Terminals|
|Transparent High-Grade Speaker Terminals|
|High Grade Audio Components|
|Gold plated RCA terminals|
|Power Supply||AC 230 V, 50/60 Hz|
|Power Consumption||750 W|
|No Sound Power||ECO On/Off: 65 W/110 W|
|Standby Power||0.1 W|
|ECO Mode / Hybrid Standby Function|
|Auto Power off|
|Dimensions (W x H x D)||434 mm x 167 mm x 393 mm (with antenna: 434 mm x 235 mm x 393 mm)|
17 1/8" x 6 5/8" x 15 1/2" (with antenna: 17 1/8" x 9 3/8" x 15 1/2")
|Weight||14.5 kg (31 lbs 15 oz)|
|Power Output (8 Ω, 20 Hz - 20 kHz, 2||140 W (0.05% THD)|
|Power Output (6 Ω, 1 kHz, 2||175 W (0.7% THD)|
|Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA)||250 W (10% THD)|
|Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)||205 W (1% THD)|
|Dynamic Power per Channel (4 Ω, Front)||250 W x 2-channel|
|Dynamic Power per Channel (8 Ω, Front)||160 W x 2-channel|
|THD digital||0.008% (1 kHz, at 0 dB)|
|Analog Distortion||0.005% (20 Hz-20 kHz, Direct mode)|
|Phono Distortion||0.03% (1 kHz, 3 V)|
|Input Sensitivity and Impedance (Line)||200 mV/47 kΩ|
|Input Sensitivity and Impedance (Phono MM)||2.5 mV|
|Rated Lineout Level and Impedance||1.2 V|
|Rated Output digital||2 V (at 0 dB playback)|
|S/N Ratio (Line, IHF-A)||102 dB|
|S/N Ratio (Phono MM, IHF-A)||74 dB|
|S/N Ratio (digital)||102 dB|
|Dynamic Range (digital)||100 dB|
|Phono RIAA Deviation||±1 dB (20 Hz to 20 kHz)|
|Frequency Response (Analog In)||+1/-3 dB (10 Hz to 100 kHz, Direct mode)|
|DSD Sampling Rates via HDMI||2.8 MHz|
|DSD Sampling Rates via USB||5.6 MHz, 2.8 MHz|
|Video Input Sensitivity/Output Level and Impedance||1 Vp-p/75 Ω (Component Y)|
0.7 Vp-p/75 Ω (Component PB/CB, PR/CR)
1 Vp-p/75 Ω (Composite)
|Video Frequency Response||5 Hz to 60 MHz, 0 dB/-3 dB (Component)|
|Wi-Fi Standard||IEEE 802.11 a/b/g/n|
|Wi-Fi Terminal Frequency||5 GHz, 2.4 GHz|
|Bluetooth Version||3.0 + EDR|
|Bluetooth Frequency||2.4 GHz|
|USB Terminal||USB2.0 5V, 1 A|
|FM Frequency||87.5 MHz - 108.0 MHz|
|FM 50 dB Quiet Sensitivity (IHF, 1 kHz, 100% MOD.)||Mono: 2.8 µV (20.2 dBf)|
|FM Effective Sensitivity||1.2 µV (12.8 dBf)|
|FM S/N Ratio||Mono/Stereo: 70 dB/67 dB|
|FM Harmonic Distortion (IHF, 1 kHz)||Mono/Stereo: 0.7%/1.0%|
|AM Frequency||522 kHz - 1611 kHz|
|AM Effective Sensitivity||18 µV|
* - 480i/576i and 480p/576p only
** - 480i/576i only
*** - no 1080p/24 upconversion
**** - 1080p signal is not converted
In 2018 Denon AVR-X6400H was replaced by AVC-X6500H. Let us now have a look at some important changes that the successor brought.
|UPGRADES||Denon AVC-X6500H||vs||Denon AVR-X6400H|
|DOWNGRADES||Denon AVC-X6500H||vs||Denon AVR-X6400H|
|Less Composite Video Inputs||4||vs||5 (1 front)|
|Analog Tuner||vs||FM/AM with RDS|
For more detailed comparison between the models please visit Denon AVC-X6500H vs Denon AVR-X6400H.