Onkyo TX-SR393 vs Yamaha RX-A670

Here we are comparing Onkyo TX-SR393 to Yamaha RX-A670 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 Onkyo TX-SR393 has 5 channel and the Yamaha RX-A670 has 7 channel and equally powerful amplifiers.

Onkyo TX-SR393	Yamaha RX-A670
Onkyo TX-SR393 was introduced in 2019. It is equipped with 5 channel amplifier with 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) power per channel and is capable of 5.1 maximum channel processing. It supports Dolby Atmos and DTS:X, passes 4K/60Hz and upscales 1080p to 4K video signal.	Yamaha RX-A670 was introduced in 2017. It is equipped with 7 channel amplifier with 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) power per channel and is capable of 7.1 maximum channel processing. It supports Dolby Atmos and DTS:X, passes 4K/60Hz and upscales up to 4K 60p 4:4:4 video signal.

We evaluated Onkyo TX-SR393 and Yamaha RX-A670 and gave them scores of 78 and 84 out of 100 recpectively. Our ranking system is based on the amplifier specifications, audio and video features, connectivity, multizone capabilities, radio and many other details.

For more details about the ranking please go to    Evaluations section.

This section shows those features and specifications which are the reason to choose Onkyo TX-SR393 over Yamaha RX-A670.

	Onkyo TX-SR393	vs	Yamaha RX-A670
Discrete Output Stage Circuitry		vs
Higher DAC Specs	384 kHz/32 Bit	vs	192 kHz/24 Bit
Dolby Atmos Height Virtualization		vs
DTS Virtual:X		vs
USB DC Out Port		vs
More Zones	2	vs	1
Analog Tuner	FM/AM	vs	FM with RDS
Bigger Power Supply	445 W	vs	260 W
Higher Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA)	155 W (10% THD)	vs	135 W (10% THD)
Newer Bluetooth Version	4․2	vs	2․1 + EDR

This section shows those features and specifications which are the reason to choose Yamaha RX-A670 over Onkyo TX-SR393.

	Onkyo TX-SR393	vs	Yamaha RX-A670
More Channels	5.2	vs	7.2
Bi-amp capability		vs
More Channel Processing	5.1	vs	7.1
DTS Neo		vs	Neo:6
Music Playback via USB		vs	MP3, WMA, AAC, Apple Lossless, WAV, FLAC, AIFF, DSD
Higher Resolution Music Playback via USB		vs	up to 192 kHz
DSD via HDMI	2-ch	vs	2-ch/Multi-ch Input
DSD via USB		vs	2-ch Input
Dialogue Lift		vs	no presence speakers required
Enhanced Audio Return Channel (eARC)		vs
Video Signal Upscaling	1080p to 4K	vs	up to 4K 60p 4:4:4
Wi-Fi		vs	with Wireless Direct
Works with Amazon Alexa		vs	on MusicCast (Voice control using your Alexa device like Echo or Echo Dot)
AirPlay		vs	AirPlay
Remote Controll App		vs	(iPhone® / iPad® / Android™ phone / tablet)
USB Input		vs	USB memory, portable audio player
More Coaxial Inputs/Outputs	1	vs	2
More RCA Line Inputs	3	vs	4 (1 front)
More Composite Video Inputs		vs	3
More Composite Video Outputs		vs	1
Ethernet		vs
Front A/V Inputs		vs	USB, mini-jack Audio
RS-232C Interface		vs
Remote (IR) Input/Output	0 / 0	vs	0 / 0
Digital Radio		vs	DAB/DAB+
Internet Radio		vs
Spotify		vs
Tidal		vs
Deezer		vs
SiriusXM		vs
More Speaker Terminals	5	vs	7
More Large Speaker Terminals	2	vs	7
Higher S/N Ratio (Line, IHF-A)	109 db	vs	110 dB
Longer Warranty	2 Years	vs	3 Years

We already listed pros and cons of each model. However, you may also find useful to look at their common strengths and weaknesses shown side-by-side.

STRENGTHS	Onkyo TX-SR393	Yamaha RX-A670
Dolby Atmos		up to 5.1.2
DTS:X		up to 5.1.2
DSD via HDMI	2-ch	2-ch/Multi-ch Input
Auto Speaker Calibration System with Mic.	AccuEQ	YPAO sound optimization
HDR10
Dolby Vision
New HDCP Version	2.3	2.3
Bluetooth	SBC, AAC	SBC, AAC
Analog Tuner	FM/AM	FM with RDS

WEAKNESSES	Onkyo TX-SR393	Yamaha RX-A670
Low Power Output	80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)	80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
No Front Wide Channel Support
No IMAX Enhanced
No Auro 3D with Auro-Matic Upmixer
No HDR10+
No 8K Passthrough	up to 4K/60p (RGB/YCbCr4:4:4)	up to 4K/60p 4:4:4
Few HDMI Inputs	4	4
Few HDMI Outputs	1	1
Few 8K Inputs
No Phono Input
No RCA Pre-Outs	0.2	0.2
No Pandora

Onkyo TX-SR393	Yamaha RX-A670
5 channel Amplifier: Onkyo TX-SR393 features 5 channel power amplifier. It is rated at 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and is able to drive 4 ohm speakers.	7 channel Amplifier: Yamaha RX-A670 features 7 channel power amplifier. It is rated at 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven).

AMPLIFIER	Onkyo TX-SR393	Yamaha RX-A670
Channels	5.2	7.2
Power Output	80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)	80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
Front Wide Channel Support
THX™ Certification
Continuous 6 Ω Rated
Discrete Output Stage Circuitry
Bi-amp Capability

Onkyo TX-SR393's and Yamaha RX-A670's amplifiers can be assigned for different speaker configurations.

• Dolby Atmos Configurations: The following speaker configurations are supported for Dolby Atmos:
Onkyo TX-SR393: 3.1.2 with internal amplifier.
Yamaha RX-A670: 5.2.2 with internal amplifier.
• DTS:X Configurations: The following speaker configurations are supported for DTS:X:
Onkyo TX-SR393: The speaker configurations for DTS:X are the same as for Dolby Atmos - 3.1.2 with internal amplifier.
Yamaha RX-A670: The speaker configurations for DTS:X are the same as for Dolby Atmos - 5.2.2 with internal amplifier.
• Configurations without height channels: There are also other speaker configurations available which do not include height channels:
Onkyo TX-SR393: 5.2 with internal amplifier.
Yamaha RX-A670: 5.2, 7.2 with internal amplifier.
• Bi-Amp: Yamaha RX-A670 is able to bi-amp up to 2 main channels simultaneously. During bi-amplification two amplifiers are used for one speaker. One amplifier powers the midrange and tweeter section of the speaker and another amplifier powers the low frequency woofers. Each amplifier is less loaded and performs better. In order to use this feature speakers must have 2 pairs of connectors.

Dolby Atmos

Onkyo TX-SR393 and Yamaha RX-A670 support Dolby Atmos.

• Dolby Surround Upmixer: Both models support Dolby Surround Upmixer. 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.
• Dolby Atmos Height Virtualization: Onkyo TX-SR393 supports Dolby Atmos Height Virtualization which is a digital signal processing solution that leverages Dolby's deep understanding of human audio perception to create the sensation of overhead sound from the listener-level speakers.

DTS:X

Onkyo TX-SR393 and Yamaha RX-A670 support DTS:X.

• DTS Neural:X: Both models feature DTS Neural:X which is an advanced 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.
• DTS Virtual:X: Onkyo TX-SR393 supports DTS Virtual:X which bridges the gap between DTS:X codec and the reality of so many consumers' homes, allowing you to enjoy multi-dimensional sound regardless of room size, layout, or speaker configuration. If you have a limited speaker setup you will miss a full immersive potential of your entertainment system. DTS Virtual:X adds height and surround audio effect to your system without adding height speakers. It works with multiple configurations and delivers immersive sound experience out of 5.1 or even 2.1 speaker layouts.
• DTS Dialog Control: Both models have DTS Dialog Control. This function adjusts the dialog levels during playback of the DTS:X stream. It allows you to separately increase the dialog levels in contrast with the background sound and hear dialog easily even under noisy circumstances.

AUDIO DECODING	Onkyo TX-SR393	Yamaha RX-A670
Dolby Atmos		up to 5.1.2
Dolby Atmos Height Virtualization
Dolby Atmos Music
Dolby TrueHD
Dolby Digital Plus
Dolby Surround Upmixer
Dolby Pro Logic
Dolby Digital EX
DTS:X		up to 5.1.2
DTS Neural:X
DTS Virtual:X
DTS Neo		Neo:6
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

Onkyo TX-SR393 and Yamaha RX-A670 come with 4 HDMI inputs. It has 1 output.

• 4K/60Hz Passthrough: On both receivers all inputs pass up to 4K/60p (RGB/YCbCr4:4:4) video signal.
• 4K Upscaling on Onkyo TX-SR393: It can upscale 1080p to 4K from HDMI sources.
  4K Upscaling on Yamaha RX-A670: It can upscale up to 4K 60p 4:4:4 from HDMI sources.
• BT.2020 Color Space: BT.2020 or Rec. 2020 is a color standard which delivers a wider color gamut compared to Rec. 709. It covers approximately 75% of the total visual spectrum while the Rec. 709 covers only 35% (available on both models).
• HDCP 2.2 Copy Protection: Both receivers are HDCP 2.2 compliant which is a requirement for 4K/HDR copy-protected content transmission.
• 3D Ready: Both receivers are able to pass 3D video through HDMI.

HDR (High Dynamic Range)

Both receivers support HDR10, Dolby Vision and Hybrid Log-Gamma. High dynamic range video has greater dynamic range than standard dynamic range (SDR) video with brighter whites and deeper blacks. The result is greater contrast and more details in dark and bright areas, better color and depth.

Enhanced Audio Return Channel (eARC)

Yamaha RX-A670 supports Audio Return Channel (ARC) which allows the compatible TV to send audio signal to the a/v receiver through the same HDMI cable which is used to send audio and video signals to the TV. So one HDMI cable is used to transfer audio signal in both directions. New Enhanced ARC will support uncompressed audio formats such as Dolby Atmos, DTS:X, Dolby TrueHD and DTS HD Master Audio whereas the previous ARC could support only Dolby Digital, Dolby Digital Plus, DTS, DTS HD, and PCM.

VIDEO FEATURES	Onkyo TX-SR393	Yamaha RX-A670
HDR10
HDR10+
Dynamic HDR
BT.2020 color space
Dolby Vision
HLG (Hybrid Log Gamma)
HDBaseT Compatible
Enhanced Audio Return Channel (eARC)
HDCP Version	2.3	2.3
QMS (Quick Media Switching)
ALLM (Auto Low Latency Mode)
VRR (Variable Refresh Rate)
QFT (Quick Frame transport)
3-D Ready
Video Signal Passthrough	up to 4K/60p (RGB/YCbCr4:4:4)	up to 4K/60p 4:4:4
Video Signal Upscaling	1080p to 4K	up to 4K 60p 4:4:4

TERMINALS	Onkyo TX-SR393	Yamaha RX-A670
HDMI Inputs	4	4
HDMI Outputs	1	1
8K Inputs
USB Input		USB memory, portable audio player
USB DC Out Port
Optical Inputs	1	1
Optical Outputs
Coaxial Inputs	1	2
RCA Line Inputs	3	4 (1 front)
RCA Line Outputs
XLR Line Inputs
Phono Input
Multi-Channel Input
RCA Pre-Outs	0.2	0.2
XLR Pre-outs
Composite Video Inputs		3
Composite Video Outputs		1
S-Video Inputs
S-Video Outputs
Component Video Inputs
Component Video Outputs

GENERAL	Onkyo TX-SR393	Yamaha RX-A670
Brand	Onkyo	Yamaha
Series		Aventage
Model	TX-SR393	RX-A670
Type	A/V Receiver	A/V Receiver
Country	North America	UK, Europe and Russia
Release Year	2019	2017
Predecessor	Onkyo TX-SR383	Yamaha RX-A660
Successor	Onkyo TX-SR3100	Yamaha RX-A680

AMPLIFIER	Onkyo TX-SR393	Yamaha RX-A670
Channels	5.2	7.2
Power Output	80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)	80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
Front Wide Channel Support
Dynamic Audio Amplification
Non-Phase Shift Amplifier
VLSC (Vector Linear Shaping Circuitry)
Optimum Gain Volume Circuitry
THX™ Certification
Continuous 6 Ω Rated
Certified 4 Ω Performance
Discrete Output Stage Circuitry
Independent Block Construction (Amp/Preprocessor)
Bi-amp Capability
BTL (Bridged Transless or Bridging)

AUDIO FEATURES	Onkyo TX-SR393	Yamaha RX-A670
Digital Signal Processing (DSP) Engine	32-bit Digital Signal Processing Engines
Surround:AI™
DAC	AKM	Burr-Brown
DAC Specs	384 kHz/32 Bit	192 kHz/24 Bit
Maximum Channel Processing	5.1	7.1
Air Studios Monitor Certification
Dolby Atmos		up to 5.1.2
Dolby Atmos Height Virtualization
Dolby Atmos Music
Dolby TrueHD
Dolby Digital Plus
Dolby Surround Upmixer
Dolby Pro Logic
Dolby Digital EX
THX Listening Modes
DTS:X		up to 5.1.2
DTS Neural:X
DTS Virtual:X
DTS Neo		Neo:6
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
Network Audio Formats		MP3, WMA, MPEG-4 AAC, Apple Lossless, WAV, FLAC, AIFF, DSD
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
High Resolution Audio Formats via USB		Apple Lossless, WAV, FLAC, AIFF, DSD
Gapless Playback
DSD via HDMI	2-ch	2-ch/Multi-ch Input
DSD via USB		2-ch Input
DSD to PCM Converter
USB DAC
Jitter Reduction
DTS Dialogue Control
Dialog Enhancement
Dialog Level Adjustment
Dialog normalization
Dialogue Lift		no presence speakers required
Tone Control	Front L/R Channels
Compressed Music Enhancer	Advanced Music Optimizer	including enhancer for Bluetooth®
High-resolution Music Enhancer
Adaptive DRC (Dynamic Range Control)
Initial Volume & Maximum Volume Setting
THX Processing Mode
Audyssey Dynamic EQ
Audyssey Dynamic Volume
Audyssey LFC
Audyssey Sub EQ HT
Audyssey DSX
Phase-Matching Bass Boost
Direct Mode
Pure Audio Mode
Pure Direct Analog Path Mode
Straight Decoding Mode
CINEMA DSP		3D
DSP Programs		17
SILENT CINEMA / Virtual CINEMA DSP		Virtual CINEMA FRONT
Virtual Speakers	T-D (Theater-Dimensional)	including surround back
Independent Subwoofer Outputs

CALIBRATION	Onkyo TX-SR393	Yamaha RX-A670
Auto Speaker Calibration System with Mic.	AccuEQ	YPAO sound optimization
YPAO Volume
PEQ for SUB		Down to 31 Hz

VIDEO FEATURES	Onkyo TX-SR393	Yamaha RX-A670
HDR10
HDR10+
Dynamic HDR
BT.2020 color space
Dolby Vision
HLG (Hybrid Log Gamma)
HDBaseT Compatible
Enhanced Audio Return Channel (eARC)
HDCP Version	2.3	2.3
QMS (Quick Media Switching)
ALLM (Auto Low Latency Mode)
VRR (Variable Refresh Rate)
QFT (Quick Frame transport)
3-D Ready
Video Signal Passthrough	up to 4K/60p (RGB/YCbCr4:4:4)	up to 4K/60p 4:4:4
Video Signal Upscaling	1080p to 4K	up to 4K 60p 4:4:4
Analog To HDMI Upconversion
Analog to Analog Video conversion
Video Parameter Adjustments
isf Certified Calibration Control

CONNECTIVITY	Onkyo TX-SR393	Yamaha RX-A670
Wi-Fi		with Wireless Direct
Bluetooth	SBC, AAC	SBC, AAC
Works with Amazon Alexa		on MusicCast (Voice control using your Alexa device like Echo or Echo Dot)
Chromecast Built-In
Works with SonoS
DTS Play-Fi
MHL Input
DLNA 1.5
MusicCast
AirPlay		AirPlay
Apple Product Connection		iPod, iPhone and iPad
Remote App		(iPhone® / iPad® / Android™ phone / tablet)
InstaPrevue Input Source Prevue

TERMINALS	Onkyo TX-SR393	Yamaha RX-A670
HDMI Inputs	4	4
HDMI Outputs	1	1
8K Inputs
USB Input		USB memory, portable audio player
USB DC Out Port
Optical Inputs	1	1
Optical Outputs
Coaxial Inputs	1	2
RCA Line Inputs	3	4 (1 front)
RCA Line Outputs
XLR Line Inputs
Phono Input
Multi-Channel Input
RCA Pre-Outs	0.2	0.2
XLR Pre-outs
Composite Video Inputs		3
Composite Video Outputs		1
S-Video Inputs
S-Video Outputs
Component Video Inputs
Component Video Outputs
Ethernet
Ethernet Switch
PC In
Front A/V Inputs		USB, mini-jack Audio
Speaker A/B
Headphone Out	6.3 mm (1/4")	6.3 mm (1/4")
Detachable Power Cord
uport
dockport

ZONES	Onkyo TX-SR393	Yamaha RX-A670
Number of Zones	2	1
Powered Zones
Zone 2 Outs	Zone B Line Out
Zone B Video Output
Whole House Mode
RS-232C Interface
+12V Trigger Output	0
Remote (IR) Input/Output	0 / 0	0 / 0
Party Mode

MISCELLANEOUS	Onkyo TX-SR393	Yamaha RX-A670
On-Screen Display		color OSD
GUI Languages	7
SCENE		SCENE (4 sets)
Web Control
PreAmp Mode
ONKYO-RI System Control
RIHD (Remote Interactive Over HDMI)

RADIO	Onkyo TX-SR393	Yamaha RX-A670
Analog Tuner	FM/AM	FM with RDS
Presets	40	40
Digital Radio		DAB/DAB+
Internet Radio
Pandora
Spotify
Tidal
Deezer
Napster
SiriusXM

CONSTRUCTION	Onkyo TX-SR393	Yamaha RX-A670
Solid Aluminum Front
A.R.T. Wedge
Speaker Terminals	5	7
Large Speaker Terminals	2	7
Color-Coded Speaker Terminals
Transparent High-Grade Speaker Terminals
Gold plated RCA terminals

POWER	Onkyo TX-SR393	Yamaha RX-A670
Power Supply	AC 120 V, 60 Hz	AC 230 V, 50 Hz
Independent Power Supply
H.C.P.S. (High Current Power Supply)
Toroidal Transformer
Power Consumption	445 W	260 W
Standby Power	0.1 W	0.1 W
ECO Mode / Hybrid Standby Function
Auto Power Standby

PHYSICAL	Onkyo TX-SR393	Yamaha RX-A670
Dimensions (W x H x D)	435 mm x 160 mm x 328 mm 17-1/8" x 6-5/16" x 12-15/16"	435 mm x 161 mm x 330 mm (with antenna: 435 mm x 225.5 mm x 330 mm)
Dimensions of Package (W x H x D)	525 mm x 240 mm x 405 mm 20-11/16" x 9-7/16" x 15-15/16"
Weight	8.2 kg (18.1 lbs)	8.3 kg (18.3 lbs)
Weight of Package	10.5 kg (23.1 lbs)

SPECIFICATIONS	Onkyo TX-SR393	Yamaha RX-A670
Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)	80 W (0.08% THD)
Power Output (6 Ω, 20 Hz - 20 kHz, 2 channel driven)		80 W (0.09% THD)
Power Output (6 Ω, 1 kHz, 1 channel driven, FTC)		115 W (0.9% THD)
Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)	155 W (10% THD)	135 W (10% THD)
Dynamic Power per Channel (2 Ω, Front)		190 W
Dynamic Power per Channel (4 Ω, Front)		170 W
Dynamic Power per Channel (6 Ω, Front)		140 W
Dynamic Power per Channel (8 Ω, Front)		120 W
THD	0.08% (20 Hz - 20 kHz, Half power)
Damping Factor		100 (Front, 20 Hz - 20 kHz, 8 Ω)
Input Sensitivity and Impedance (Line)	200 mV/47 kΩ (1 kHz, 100 W/8 Ω)	200 mV/47 kΩ (1 kHz, 100 W/6 Ω)
Maximum Input Sensitivity (Line)		2.3 V (1 kHz, 0.5% THD)
Rated Headphone Jack Output Level and Impedance		100 mV/470 Ω (1 kHz, 50 mV, 8 Ω)
Rated Headphone Power Output	80 mW (32 Ω, 1 kHz, 10% THD)
S/N Ratio (Line, IHF-A)	109 db	110 dB
Frequency Response (Analog In)	10 Hz - 100 kHz/+1 dB, -3 dB (Direct)	+0/-3 dB (10 Hz to 100 kHz)
Residual noise (IHF-A Network)		150 µV (Speaker Out)
Channel Separation at 1 kHz/10 kHz (LINE)		75 dB/50 dB
DSD Sampling Rates via HDMI	2.8 MHz	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 (Composite)
Video Maximum Input		1.5 Vp-p
Video S/N Ratio		50 dB
Ethernet Standard		10BASE-T/100BASE-TX
Wi-Fi Standard		IEEE 802.11 b/g/n
Wi-Fi Terminal Frequency		2.4 GHz
Bluetooth Version	4․2	2․1 + EDR
Bluetooth Frequency	2.4 GHz	2.4 GHz
USB Terminal	5 V, 1 A	USB2.0 5 V, 1 A
FM Frequency	87.5 MHz - 107.9 MHz	87.50 MHz - 108.00 MHz
FM 50 dB Quiet Sensitivity (IHF, 1 kHz, 100% MOD.)	Mono: 1.0 µV (11.2 dBf)	Mono: 3 µV (20.8 dBf)
FM S/N Ratio		Mono/Stereo: 65 dB/64 dB
FM Harmonic Distortion (IHF, 1 kHz)		Mono/Stereo: 0.5%/0.6%
AM Frequency	530 kHz - 1710 kHz
DAB Freq		174 MHz - 240 MHz (Band III)
DAB audio formats		MPEG 1 Layer II/MPEG-4 HE-AAC v2
Warranty	2 Years	3 Years

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