Here we are comparing Denon AVR-X6300H to Onkyo TX-SR393 to reveal their common strengths and weaknesses as well as the differences between them which will help you in making a correct decision before the purchase. The Denon AVR-X6300H has 11 channel and the Onkyo TX-SR393 has 5 channel amplifiers.

Let us have a look at some highlights of the models.

We have evaluated both receivers. Denon AVR-X6300H gets higher overall score in our ranking system which 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 4K passthrough, 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...

This section shows those features and specifications which are the reason to choose Denon AVR-X6300H over Onkyo TX-SR393.

Denon AVR-X6300H has more channels, more channel processing, more zones and bigger power supply. It supports Auro3D, DSD streaming via USB, Amazon Alexa, internet radio, Pandora, Spotify, Tidal, Deezer, Napster and SiriusXM. It has bi-amp capability, phono input and analog pre-outs.

	Denon AVR-X6300H	Onkyo TX-SR393
More Channels	11.2	5.2
Bi-amp capability	✔ assignable	✖
More Channel Processing	11.2	5.1
Dolby Digital EX	✔	✖
Auro 3D with Auro-Matic Upmixer	✔	✖
Music Playback via USB	MP3, WMA, AAC, Apple Lossless, WAV, FLAC, AIFF, DSD	✖
Higher Resolution Music Playback via USB	✔ up to 192 kHz	✖
DSD via HDMI	✔ 2-ch/Multi-ch Input	✔ 2-ch
DSD via USB	✔ 2-ch Input	✖
Jitter Reduction	✔	✖
Dialog Enhancement	✔	✖
Audyssey Dynamic EQ	✔	✖
Audyssey Dynamic Volume	✔	✖
Audyssey LFC	✔	✖
Audyssey Sub EQ HT	✔	✖
Auto Low Latency Mode Pass-through	✔	✖
Video Signal Upscaling	✔ up to 4K 50/60Hz 4:4:4	✔ 1080p to 4K
Analog To HDMI Upconversion	✔ Component, Composite	✖
isf Certified Calibration Control	✔	✖
Works with Amazon Alexa	✔	✖
AirPlay	✔ AirPlay 2	✖
Remote Controll App	✔ Denon 2016 AVR Remote App for iOS and Android devices and Kindle Fire	✖
Ethernet	✔	✖
Wi-Fi	✔	✖
More HDMI Inputs	8 (1 front)	4
More HDMI Outputs	3 (2 for MAIN, 1 for ZONE2)	1
USB Input	1 (Front) for iPod/iPhone and USB memory	✖
More Analog Audio Line Inputs	7 (1 front)	3
Phono Input	✔	✖
More Optical Inputs	2	1
More Coaxial Inputs/Outputs	2 / No	1 / No
More Composite Video Inputs	5 (1 front)	✖
More Composite Video Outputs	1	✖
More Component Video Inputs	2	✖
More Component Video Outputs	1	✖
More Analog Pre-Outs	11.2	0.2
Front A/V Inputs	HDMI, USB, Composite, L/R Audio	✖
Speaker A/B	✔ assignable	✖
More Zones	3	2
More Powered Zones	✔ 2 and 3	✖
Zone 2 Outs	HDMI, Component, Composite, Pre Out	Zone B Line Out
RS-232 Interface	✔	✖
+12V Trigger Output	2	0
Remote (IR) Input/Output	1 / 1	0 / 0
Detachable Power Cord	✔	✖
Digital Radio	✔ HD Radio	✖
Internet Radio	✔ vTuner	✖
Pandora	✔	✖
Spotify	✔	✖
Tidal	✔	✖
Deezer	✔	✖
Napster	✔	✖
SiriusXM Internet Radio	✔	✖
More Speaker Terminals	11	5
More Large Speaker Terminals	11	2
Color-Coded Speaker Terminals	✔	✖
Transparent High-Grade Speaker Terminals	✔	✖
Gold plated RCA terminals	✔	✖
Bigger Power Supply	750 W	465 W
Longer Warranty	3 Years	2 Years
Higher Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA)	250 W (10% THD)	155 W (10% THD)
Higher Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)	205 W (1% THD)	135 W (1% THD)

This section shows those features and specifications which are the reason to choose Onkyo TX-SR393 over Denon AVR-X6300H.

Onkyo TX-SR393 has higher signal to noise ratio and higher bluetooth standard.

	Denon AVR-X6300H	Onkyo TX-SR393
Dolby Atmos Height Virtualization	✖	✔
DTS Virtual:X	✖	✔
USB DC Out Port	✖	✔
More GUI Languages	3	9
Analog Tuner	✔ FM/AM	✔ FM/AM with RDS
Higher S/N Ratio (Line, IHF-A)	102 dB	109 db
Newer Bluetooth Version	3.0 + EDR	4.2
Wider AM Frequency Range	530 kHz - 1710 kHz	522/530 kHz - 1611/1710 kHz

Denon AVR-X6300H and Onkyo TX-SR393 share common strengths such as Dolby Atmos support, DTS:X support, HDR10, Dolby Vision and bluetooth.

STRENGTHS	Denon AVR-X6300H	Onkyo TX-SR393
Dolby Atmos	✔ up to 7.1.4	✔
DTS:X	✔ up to 7.1.4	✔
DTS Neural:X	✔	✔
DSD via HDMI	✔ 2-ch/Multi-ch Input	✔ 2-ch
DTS Dialog Control	✔	✔
HDR10	✔	✔
Dolby Vision	✔	✔
4K or 8K Video Passthrough	up to 4K 50/60Hz 4:4:4	up to 4K/60p (RGB/YCbCr4:4:4)
4K or 8K Signal Upscaling	✔ up to 4K 50/60Hz 4:4:4	✔ 1080p to 4K
Bluetooth	✔ SBC, AAC	✔ SBC, AAC
New HDCP Version	2.2	2.3 (via future firmware update)
Zones	3	2
Analog Tuner	✔ FM/AM	✔ FM/AM with RDS

Denon AVR-X6300H and Onkyo TX-SR393 share common weaknesses such as no front wide channel support, no MHL input, no ChromeCast, no DTS Play-Fi, no SONOS and no analog multi-channel input.

WEAKNESSES	Denon AVR-X6300H	Onkyo TX-SR393
No Front Wide Channel Support	✖	✖
No IMAX Enhanced	✖	✖
No HDR10+	✖	✖
No Dynamic HDR	✖	✖
No VRR	✖	✖
No QFT	✖	✖
No MHL Input	✖	✖
No FireConnect	✖	✖
No FlareConnect	✖	✖
No Chromecast Built-In	✖	✖
No DTS Play-Fi	✖	✖
Does Not Work with SONOS	✖	✖
No eARC	✖	✖
No Multi-Channel Input	✖	✖

Amplifier

Denon AVR-X6300H has 11 channel and Onkyo TX-SR393 has 5 channel amplifiers. Denon AVR-X6300H delivers 140 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and Onkyo TX-SR393 delivers 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and they both have stable performance at 4 Ω load. Since 2016 all receiver manufacturers have dropped front wide channel support and these models are no exceptions.

Video Features

Both receivers support 4K passthrough up to 60p. Denon AVR-X6300H can do 4K upscaling up to 60p and Onkyo TX-SR393 can do 4K upscaling. The receivers support HDR10, Dolby Vision.

HDR10

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

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-X6300H and Onkyo TX-SR393 support Dolby Atmos with its Dolby Surround upmixer. The Denon AVR-X6300H can be configured upto 7.1.4 channels using internal amplifiers and the Onkyo TX-SR393 can be configured upto 3.1.2 channels.

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-X6300H and Onkyo TX-SR393 support DTS:X with its Neural:X upmixer. The Denon AVR-X6300H can be configured upto 7.1.4 channels using internal amplifiers. The Onkyo TX-SR393 can be configured upto 3.1.2 channels.

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 an 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-X6300H supports Auro-3D and its Auro-Matic upmixer via charged firmware upgrade. 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.

D.D.S.C.

Denon AVR-X6300H has 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.

Advanced Music Optimizer

Compressed music enhancement in Onkyo TX-SR393 is done by Onkyo’s Advanced Music Optimizer. While MP3 or AAC files may sound fine through the headphones of your portable digital player, the limitations of these files can be exposed when played back through a quality home entertainment system. This is because a significant amount of high-frequency bit information is lost during the file-compression process. To counter this, Onkyo has designed the Advanced Music Optimizer to compensate for lost bit information and improve the quality of compressed audio signals. This results in a clearer and more expansive sound. Also included in this technology is a loudness correction feature that further improves the audio character of compressed files.

Connectivity

Denon AVR-X6300H

Denon AVR-X6300H 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 with 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.

Onkyo TX-SR393

Onkyo TX-SR393 can also connect to bluetooth devices via built-in bluetooth adapter. It has 4 HDMI inputs with HDCP 2.3 (via future firmware update) copy protection.

Front panel has no inputs.

And in the end let us list the detailed specifications of the receivers side-by-side.

Note: The following table shows only those details which are applicable for both models and excludes the ones that are applicable for only one model. If you want to see a full list of specs for each model please visit their individual pages here - Denon AVR-X6300H and here - Onkyo TX-SR393.

BASICS	Denon AVR-X6300H	Onkyo TX-SR393
Brand	Denon	Onkyo
Model	AVR-X6300H	TX-SR393
Type	A/V Receiver	A/V Receiver
Country	USA	Europe
Release Year	2016	2019

AMPLIFIER	Denon AVR-X6300H	Onkyo TX-SR393
Channels	11.2	5.2
Front Wide Channel Support	✖	✖
THX™ Certification	✖	✖
Continuous 6 Ω Rated	✔	✔
Certified 4 Ω Performance	✔	✔
Bi-amp Capability	✔ assignable	✖

AUDIO	Denon AVR-X6300H	Onkyo TX-SR393
Digital Signal Processing (DSP) Engine	4 powerful high speed 4th generation SHARC DSP processors with 32-bit floating point	32-bit Digital Signal Processing Engines
Maximum Channel Processing	11.2	5.1
Air Studios Monitor Certification	✖	✖
Dolby Atmos	✔ up to 7.1.4	✔
Dolby Atmos Height Virtualization	✖	✔
Dolby TrueHD	✔	✔
Dolby Digital Plus	✔	✔
Dolby Surround Upmixer	✔	✔
Dolby Pro Logic	✖	✖
Dolby Digital EX	✔	✖
DTS:X	✔ up to 7.1.4	✔
DTS Neural:X	✔	✔
DTS Virtual:X	✖	✔
DTS Neo	✖	✖
DTS-HD Master Audio	✔	✔
DTS-HD High Resolution Audio	✔	✔
DTS 96/24	✔	✔
DTS Express	✔	✔
DTS-ES	✔ Discrete 6.1, Matrix 6.1	✔
IMAX Enhanced	✖	✖
Auro 3D with Auro-Matic Upmixer	✔	✖
PCM	✔ 2-ch/Multi-ch Input	✔ 2-ch/Multi-ch Input
Music Playback via USB	MP3, WMA, AAC, Apple Lossless, WAV, FLAC, AIFF, DSD	✖
High Resolution Music Playback via USB and/or Network	✔ up to 192 kHz	✖
DSD via HDMI	✔ 2-ch/Multi-ch Input	✔ 2-ch
DSD via USB	✔ 2-ch Input	✖
DSD to PCM Converter	✖	✖
USB DAC	✖	✖
Jitter Reduction	✔	✖
DTS Dialogue Control	✔	✔
Dialog Enhancement	✔	✖
Dialog Normalization	✔	✔
Dialogue Lift	✖	✖
Compressed Music Enhancer	✔	✔ Advanced Music Optimizer
High-resolution Music Enhancer	✖	✖
Audyssey Dynamic EQ	✔	✖
Audyssey Dynamic Volume	✔	✖
Audyssey LFC	✔	✖
Audyssey Sub EQ HT	✔	✖
Audyssey DSX	✖	✖
Direct Mode	✔	✔

CALIBRATION	Denon AVR-X6300H	Onkyo TX-SR393
Auto Speaker Calibration System with Mic.	✔ Audyssey MultEQ XT32	✔ AccuEQ

VIDEO	Denon AVR-X6300H	Onkyo TX-SR393
HDR10	✔	✔
HDR10+	✖	✖
Dynamic HDR	✖	✖
BT.2020 color space	✔	✔
Dolby Vision	✔	✔
Hybrid Log Gamma (HLG)	✔	✔
Quick Media Switching (QMS)	✖	✖
Auto Low Latency Mode (ALLM)	✔	✖
Variable Refresh Rate (VRR)	✖	✖
Quick Frame Transport (QFT)	✖	✖
3-D Ready	✔	✔
Video Signal Passthrough	up to 4K 50/60Hz 4:4:4	up to 4K/60p (RGB/YCbCr4:4:4)
Video Signal Upscaling	✔ up to 4K 50/60Hz 4:4:4	✔ 1080p to 4K
Analog To HDMI Upconversion	✔ Component, Composite	✖
isf Certified Calibration Control	✔	✖

CONNECTIVITY	Denon AVR-X6300H	Onkyo TX-SR393
MHL Input	✖	✖
FireConnect	✖	✖
FlareConnect	✖	✖
Chromecast Built-In	✖	✖
DTS Play-Fi	✖	✖
Works with Amazon Alexa	✔	✖
Works with SONOS	✖	✖
AirPlay	✔ AirPlay 2	✖
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	✖	✖
Ethernet	✔	✖
Ethernet Switch	✖	✖
Wi-Fi	✔	✖
Bluetooth	✔ SBC, AAC	✔ SBC, AAC
HDBaseT Compatible	✖	✖
Enhanced Audio Return Channel (eARC)	✖	✖
HDCP Version	2.2	2.3 (via future firmware update)
HDMI Inputs	8 (1 front)	4
HDMI Outputs	3 (2 for MAIN, 1 for ZONE2)	1
USB Input	1 (Front) for iPod/iPhone and USB memory	✖
USB DC Out Port	✖	✔
Analog Audio Line Inputs	7 (1 front)	3
Analog Audio Line Outputs	✖	✖
Phono Input	✔	✖
Optical Inputs	2	1
Optical Outputs	✖	✖
Coaxial Inputs/Outputs	2 / No	1 / No
Composite Video Inputs	5 (1 front)	✖
Composite Video Outputs	1	✖
S-Video Inputs	✖	✖
S-Video Outputs	✖	✖
Component Video Inputs	2	✖
Component Video Outputs	1	✖
PC In	✖	✖
Multi-Channel Input	✖	✖
Analog Pre-Outs	11.2	0.2
XLR Inputs	✖	✖
XLR Pre-outs	✖	✖
Front A/V Inputs	HDMI, USB, Composite, L/R Audio	✖
Speaker A/B	✔ assignable	✖
Headphone Out	✔ 6.3 mm	✔ 6.3 mm

ZONES	Denon AVR-X6300H	Onkyo TX-SR393
Zones	3	2
Powered Zones	✔ 2 and 3	✖
Zone 2 Outs	HDMI, Component, Composite, Pre Out	Zone B Line Out
RS-232 Interface	✔	✖
+12V Trigger Output	2	0
Remote (IR) Input/Output	1 / 1	0 / 0

MISC	Denon AVR-X6300H	Onkyo TX-SR393
On-Screen Display	✔ Advanced Graphic User Interface	✔
GUI Languages	3	9
Detachable Power Cord	✔	✖

RADIO	Denon AVR-X6300H	Onkyo TX-SR393
Analog Tuner	✔ FM/AM	✔ FM/AM with RDS
Digital Radio	✔ HD Radio	✖
Internet Radio	✔ vTuner	✖
Pandora	✔	✖
Spotify	✔	✖
Tidal	✔	✖
Deezer	✔	✖
Napster	✔	✖
SiriusXM Internet Radio	✔	✖

CONSTRUCTION	Denon AVR-X6300H	Onkyo TX-SR393
Speaker Terminals	11	5
Large Speaker Terminals	11	2
Color-Coded Speaker Terminals	✔	✖
Transparent High-Grade Speaker Terminals	✔	✖
Gold plated RCA terminals	✔	✖

POWER	Denon AVR-X6300H	Onkyo TX-SR393
Power Supply	AC 120 V, 60 Hz	AC 220-240 V, 50/60 Hz
Power Consumption	750 W	465 W
Standby Power	0.1 W	0.2 W

GENERAL	Denon AVR-X6300H	Onkyo TX-SR393
Dimensions (W x H x D)	434 mm x 167 mm x 393 mm (with antenna: 434 mm x 235 mm x 393 mm)	435 mm x 160 mm x 328 mm 17-1/8" x 6-5/16" x 12-15/16"
Weight	14.5 kg (31 lbs 15 oz)	8.2 kg (18.1 lb 10 oz)
Warranty	3 Years	2 Years

SPECS	Denon AVR-X6300H	Onkyo TX-SR393
Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)	250 W (10% THD)	155 W (10% THD)
Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)	205 W (1% THD)	135 W (1% THD)
Input Sensitivity and Impedance (Line)	200 mV/47 kΩ	200 mV/47 kΩ (1 kHz, 100 W/8 Ω)
S/N Ratio (Line, IHF-A)	102 dB	109 db
Frequency Response (Analog In)	+1/-3 dB (10 Hz to 100 kHz, Direct mode)	10 Hz - 100 kHz/+1 dB, -3 dB (Direct)
DSD Sampling Rates via HDMI	2.8 MHz	2.8 MHz
Bluetooth Version	3.0 + EDR	4.2
Bluetooth Frequency	2.4 GHz	2.4 GHz
USB Terminal	USB2.0 5V, 1 A	5 V, 1 A
FM Frequency	87.5 MHz - 107.9 MHz	87.5 MHz - 108.0 MHz
AM Frequency	530 kHz - 1710 kHz	522/530 kHz - 1611/1710 kHz

* - 480i/576i and 480p/576p only
** - 480i/576i only
*** - no 1080p/24 upconversion
**** - 1080p signal is not converted