1-on-1 Comparison

Side-by-Side Comparison

Onkyo TX-SR373

Onkyo TX-SR353

SCORE:
69
SCORE:
66

Highlights

  • 5.1 channels
  • 5.1 channel processing
  • 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
  • HDR10, Dolby Vision, 4K Passthrough
  • Bluetooth
  • USB input

Highlights

  • 5.1 channels
  • 5.1 channel processing
  • 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
  • HDR10, 4K Passthrough
  • Bluetooth
  • USB input

Disclosure: We earn money from the affiliate links to products associated with content in this article.

Content

Overview

Here we are comparing Onkyo TX-SR373 to Onkyo TX-SR353 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. Both receivers have 5 channel amplifiers with Onkyo TX-SR373's being more powerful.

We have evaluated both receivers. Onkyo TX-SR373 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.

Onkyo TX-SR373

Onkyo TX-SR353

AMPLIFIER
72
VIDEO FEATURES
87
AUDIO FEATURES
64
CONNECTIVITY
63
MULTIZONE
55
MISCELLANEOUS
41
RADIO
66
OVERALL
69
AMPLIFIER
69
VIDEO FEATURES
81
AUDIO FEATURES
65
CONNECTIVITY
62
MULTIZONE
55
MISCELLANEOUS
41
RADIO
59
OVERALL
66

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...

Advantage of Onkyo TX-SR373

This section shows those features and specifications which are the reason to choose Onkyo TX-SR373 over Onkyo TX-SR353.

Onkyo TX-SR373 has more power per channel, bigger power supply and higher signal to noise ratio. In video department only Onkyo TX-SR373 supports Dolby Vision.

Onkyo TX-SR373 vs Onkyo TX-SR353
Dolby Vision vs
Analog Tuner FM/AM with RDS vs FM/AM
Bigger Power Supply 220 W vs 210 W
Higher Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC) 100 W (0.09% THD) vs 80 W (0.08% THD)
Higher S/N Ratio (Line, IHF-A) 106 dB vs 98 dB

Common Strengths and Weaknesses

Here we list common strengths and weaknesses of both receivers.

PROS
👍   Dolby TrueHD
👍   Dolby Digital Plus
👍   DTS-HD Master Audio
👍   DTS-HD High Resolution Audio
👍   DTS 96/24
👍   DSD via HDMI
👍   Compressed Music Enhancer
👍   Auto Speaker Calibration System with Mic.
👍   HDR10
👍   BT.2020 color space
👍   3-D Ready
👍   4K or 8K Video Passthrough
👍   Bluetooth
👍   New HDCP Version
👍   USB Input
👍   Composite Video Inputs
👍   Composite Video Outputs
👍   Zones
👍   Analog Tuner
CONS
👎   Not Certified 4 Ω Performance
👎   No Bi-amp Capability
👎   Few Channel Processing
👎   No Dolby Atmos
👎   No Dolby Atmos Height Virtualization
👎   No Dolby Surround Upmixer
👎   No DTS:X
👎   No DTS Neural:X
👎   No DTS Virtual:X
👎   No IMAX Enhanced
👎   No Auro 3D with Auro-Matic Upmixer
👎   No High Resolution Music Playback via USB and/or Network
👎   No DTS Dialog Control
👎   No High-resolution Music Enhancer
👎   No HDR10+
👎   No Hybrid Log Gamma (HLG)
👎   No 4K or 8K Video Upscaling
👎   No DLNA 1.5
👎   No Chromecast Built-In
👎   Does not Work with Amazon Alexa
👎   Does Not Work with SONOS
👎   No Ethernet
👎   No Wi-Fi
👎   No eARC
👎   Few HDMI Inputs
👎   Few HDMI Outputs
👎   Few Analog Audio Line Inputs
👎   No Phono Input
👎   No Component Video Inputs
👎   No Multi-Channel Input
👎   No Analog Pre-Outs
👎   No Pandora
👎   No Spotify
👎   No Tidal
👎   No Deezer
👎   No Napster
👎   No SiriusXM Internet Radio

Selected Features

Amplifier

Onkyo TX-SR373 and Onkyo TX-SR353 have 5 channel amplifiers. They both deliver 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) Since 2016 all receiver manufacturers have dropped front wide channel support. Onkyo TX-SR373 is no exception.


Video Features

Both receivers support 4K passthrough up to 60p. Onkyo TX-SR373 supports HDR10, Dolby Vision and Onkyo TX-SR353 supports HDR10.


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.


Advanced Music Optimizer

Compressed music enhancement in Onkyo TX-SR373 and Onkyo TX-SR353 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

Onkyo TX-SR373

Image cannot be found Image cannot be found

Onkyo TX-SR373 can also connect to bluetooth devices via built-in bluetooth adapter. It has 4 HDMI inputs with HDCP 2.2 copy protection.

Front panel has USB input.

Onkyo TX-SR353

Image cannot be found Image cannot be found

Onkyo TX-SR353 can also connect to bluetooth devices via built-in bluetooth adapter. It has 4 HDMI inputs with HDCP 2.2 copy protection.

Front panel has USB input.

Specifications

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 - Onkyo TX-SR373 and here - Onkyo TX-SR353.

BASICS Onkyo TX-SR373 Onkyo TX-SR353
BrandOnkyoOnkyo
ModelTX-SR373TX-SR353
TypeA/V ReceiverA/V Receiver
CountryEuropeNorth America
Release Year20172016
AMPLIFIER Onkyo TX-SR373 Onkyo TX-SR353
Channels5.15.1
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 Onkyo TX-SR373 Onkyo TX-SR353
Maximum Channel Processing5.15.1
Air Studios Monitor Certification
Dolby Atmos
Dolby Atmos Height Virtualization
Dolby TrueHD
Dolby Digital Plus
Dolby Surround Upmixer
Dolby Digital EX
DTS:X
DTS Neural:X
DTS Virtual:X
DTS-HD Master Audio
DTS-HD High Resolution Audio
DTS 96/24
IMAX Enhanced
Auro 3D with Auro-Matic Upmixer
PCM 2-ch/Multi-ch Input 2-ch/Multi-ch Input
High Resolution Music Playback via USB and/or Network
Multi-Channel Music File Playback via USB
DSD via HDMI 2-ch 2-ch
USB DAC
Jitter Reduction
DTS Dialog Control
Dialog Enhancement
Dialog Normalization
Dialogue Lift
Tone Control Front L/R Channels Front L/R Channels
Compressed Music Enhancer Advanced Music Optimizer Advanced Music Optimizer
High-resolution Music Enhancer
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
CALIBRATION Onkyo TX-SR373 Onkyo TX-SR353
Auto Speaker Calibration System with Mic. AccuEQ AccuEQ
VIDEO Onkyo TX-SR373 Onkyo TX-SR353
HDR10
HDR10+
BT.2020 color space
Dolby Vision
HLG (Hybrid Log Gamma)
QMS (Quick Media Switching)
ALLM (Auto Low Latency Mode)
VRR (Variable Refresh Rate)
QFT (Quick Frame transport)
3-D Ready
Video Signal Passthroughup to 4K/60p (4:4:4)up to 4K/60p (4:4:4)
Video Signal Upscaling
Analog To HDMI Upconversion
isf Certified Calibration Control
CONNECTIVITY Onkyo TX-SR373 Onkyo TX-SR353
MHL Input
DLNA 1.5
FireConnect
FlareConnect
Chromecast Built-In
DTS Play-Fi
Works with Amazon Alexa
Works with SONOS
AirPlay
Apple Product Connection
Remote App
InstaPrevue Input Source Prevue
Ethernet
Ethernet Switch
Wi-Fi
Bluetooth SBC, AAC
HDBaseT Compatible
Enhanced ARC
HDCP Version2.22.2
HDMI Input44
HDMI Output11
USB Input1 (Front)1 (Front)
USB DC Out Port
Analog Audio Line Input33
Analog Audio Line Output
Phono Input
Optical In11
Optical Out
Coaxial In/Out1 / 1 /
Composite Video Input22
Composite Video Output11
S-Video Input
S-Video Output
Component Video Input
Component Video Output
PC In
Multi-Channel Input
Analog Pre-Outs0.10.1
XLR Inputs
XLR Pre-outs
Front A/V InputsUSBUSB
Speaker A/B
Headphone Out 6.3 mm 6.3 mm
ZONES Onkyo TX-SR373 Onkyo TX-SR353
Zones11
Whole House Mode
RS-232
+12V Trigger Output00
Remote (IR) Input/Output0 / 00 / 0
MISC Onkyo TX-SR373 Onkyo TX-SR353
Detachable Power Cord
uport
ONKYO-RI System Control
RIHD (Remote Interactive Over HDMI)
Pre-Pro/Learning Remote / /
On Screen Remote Programming
Bi-directional Remote Setup via GUI
RADIO Onkyo TX-SR373 Onkyo TX-SR353
Analog Tuner FM/AM with RDS FM/AM
Presets3030
Digital Radio
Internet Radio
Pandora
Spotify
Tidal
Deezer
Napster
SiriusXM Internet Radio
CONSTRUCTION Onkyo TX-SR373 Onkyo TX-SR353
Solid Aluminum Front
Speaker Terminals55
Large Speaker Terminals22
Color-Coded Speaker Terminals
Transparent High-Grade Speaker Terminals
18mm Pitch High Grade Pre-outs
19mm-Pitch Audio Inputs
Gold plated RCA terminals
POWER Onkyo TX-SR373 Onkyo TX-SR353
Power SupplyAC 220-240 V, 50/60 HzAC 120 V, 60 Hz
Independent Power Supply
H.C.P.S. (High Current Power Supply)
Toroidal Transformer
Power Consumption220 W210 W
Standby Power0.3 W0.45 W
GENERAL Onkyo TX-SR373 Onkyo TX-SR353
Dimensions (W x H x D)435 mm x 168 mm x 326.5 mm
17-1/8" x 6-5/8" x 12-13/16"
435 mm x 168 mm x 326.5 mm
17-1/8" x 6-5/8" x 12-7/8"
Weight8.0 kg (17 lb 10 oz)8.0 kg (17 lb 10 oz)
Warranty2 Years2 Years
SPECS Onkyo TX-SR373 Onkyo TX-SR353
Power Output (8 Ω, 20 Hz - 20 kHz, 2100 W (0.09% THD)80 W (0.08% THD)
THD0.06% (20 Hz - 20 kHz, 1 Channel Driven, 50 W)0.06% (20 Hz - 20 kHz, 8 Ω, 1 Channel Driven, 50 W)
Input Sensitivity and Impedance (Line)200 mV/47 kΩ200 mV/47 kΩ
S/N Ratio (Line, IHF-A)106 dB98 dB
Frequency Response (Analog In)5 Hz - 100 kHz/0 dB, -3 dB (Direct)5 Hz - 100 kHz/0 dB, -3 dB (Direct mode)
DSD Sampling Rates via HDMI2.8 MHz2.8 MHz
Video Input Sensitivity/Output Level and Impedance1 Vp-p/75 Ω (Composite)1 Vp-p/75 Ω (Composite)
FM Frequency87.5 MHz - 108.0 MHz87.5 MHz - 108.0 MHz
AM Frequency530 kHz - 1700 kHz530 kHz - 1700 kHz

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

Amazon Affiliate Disclosure

ZKelectronics is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for website owners to earn advertising fees by advertising and linking to Amazon (.com, .co.uk, .ca, etc) and any other websites that may be affiliated with Amazon Service LLC Associates Program.