Onkyo TX-SR373 Review and Specs

Onkyo TX-SR373 (North American version)

SCORE:
28

Highlights

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

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Onkyo TX-SR373 Overview

Onkyo TX-SR373 was introduced in 2017. It is equipped with 5 channel amplifier and is capable of 5.1 maximum channel processing.

We evaluated the Receiver and gave 28 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
33
VIDEO FEATURES
50
AUDIO FEATURES
17
CONNECTIVITY
18
MULTIZONE
20
MISCELLANEOUS
12
RADIO
21
OVERALL
28

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 Onkyo TX-SR373.

PROS
DSD via HDMI 👍
HDR10 👍
Dolby Vision 👍
4K or 8K Video Passthrough 👍
Bluetooth 👍
New HDCP Version 👍
USB Input 👍
Composite Video Inputs 👍
Zones 👍
Analog Tuner 👍
CONS
No Front Wide Channel Support 👎
Few Channel Processing 👎
No Dolby Atmos 👎
No Dolby Atmos Height Virtualization 👎
No DTS:X 👎
No DTS Neural:X 👎
No DTS Virtual:X 👎
No IMAX Enhanced 👎
No Auro 3D with Auro-Matic Upmixer 👎
No DSD via USB 👎
No DTS Dialog Control 👎
No Audyssey Dynamic EQ 👎
No Audyssey Dynamic Volume 👎
No Audyssey LFC 👎
No Audyssey Sub EQ HT 👎
No HDR10+ 👎
No Dynamic HDR 👎
No Auto Low Latency Mode Pass-through 👎
No VRR 👎
No QFT 👎
No 4K or 8K Video Upscaling 👎
No MHL Input 👎
No DLNA 1.5 👎
No FireConnect 👎
No FlareConnect 👎
No Chromecast Built-In 👎
No DTS Play-Fi 👎
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 Internet Radio 👎
No Pandora 👎
No Spotify 👎
No Tidal 👎
No Deezer 👎
No Napster 👎
No SiriusXM Internet Radio 👎
No Toroidal Transformer 👎
Old Bluetooth Version 👎

Major Changes from its predecessor

Here we are comparing Onkyo TX-SR373 to its predecessor TX-SR353 and displaying the major changes.

UPGRADES Onkyo TX-SR373 Onkyo TX-SR353
More Channels 5.2 5.1
Dolby Vision

For more detailed comparison between the models please visit Onkyo TX-SR373 vs Onkyo TX-SR353.

Selected Features

Amplifier

Onkyo TX-SR373 has 5 channel amplifier and delivers 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven).


Video Features

The Receiver has 4K passthrough up to 60p. It can bypass 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.


Advanced Music Optimizer

Compressed music enhancement in Onkyo TX-SR373 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.


Room Correction

Onkyo TX-SR373 comes with AccuEQ room correction system and includes the calibration microphone.


Connectivity

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

Front panel has USB input.

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Detailed Specifications

Here we list all the available features and specifications of Onkyo TX-SR373.

BASICS
BrandOnkyo
ModelTX-SR373
TypeA/V Receiver
CountryNorth America
Release Year2017
AMPLIFIER
Channels5.2
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
Maximum Channel Processing5.1
Air Studios Monitor Certification
Dolby Atmos
Dolby Atmos Height Virtualization
Dolby TrueHD
Dolby Digital Plus
Dolby Surround Upmixer
Dolby Pro Logic PLII
Dolby Digital EX
THX Listening Modes
DTS:X
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
IMAX Enhanced
Auro 3D with Auro-Matic Upmixer
PCM 2-ch/Multi-ch Input
Music Playback via USBWMA, MP3, AAC
High Resolution Music Playback via USB and/or Network
Multi-Channel Music File Playback via USB
DSD via HDMI 2-ch
DSD via USB
DSD to PCM Converter
USB DAC
Jitter Reduction
DTS Dialogue Control
Dialog Enhancement
Dialog Normalization
Dialogue Lift
Tone Control Front L/R Channels
Compressed Music Enhancer 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
Virtual Speakers
CALIBRATION
Auto Speaker Calibration System with Mic. AccuEQ
VIDEO
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 Passthroughup to 4K/60p (4:4:4)
Video Signal Upscaling
Analog To HDMI Upconversion
isf Certified Calibration Control
CONNECTIVITY
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 Audio Return Channel (eARC)
HDCP Version2.2
HDMI Inputs4
HDMI Outputs1
USB Input1 (Front)
USB DC Out Port
Analog Audio Line Inputs3
Analog Audio Line Outputs
Phono Input
Optical Inputs1
Optical Outputs
Coaxial Inputs/Outputs1 / No
Composite Video Inputs2
Composite Video Outputs1
S-Video Inputs
S-Video Outputs
Component Video Inputs
Component Video Outputs
PC In
Multi-Channel Input
Analog Pre-Outs0.2
XLR Inputs
XLR Pre-outs
Front A/V InputsUSB
Speaker A/B
Headphone Out 6.3 mm
ZONES
Zones1
Whole House Mode
RS-232 Interface
+12V Trigger Output0
Remote (IR) Input/Output0 / 0
MISC
On-Screen Display via HDMI
Detachable Power Cord
uport
ONKYO-RI System Control
RIHD (Remote Interactive Over HDMI)
Pre-Pro/Learning RemoteNo / No
On Screen Remote Programming
Bi-directional Remote Setup via GUI
RADIO
Analog Tuner FM/AM
Presets30
Digital Radio
Internet Radio
Pandora
Spotify
Tidal
Deezer
Napster
SiriusXM Internet Radio
CONSTRUCTION
Solid Aluminum Front
Speaker Terminals5
Large Speaker Terminals2
Color-Coded Speaker Terminals
Transparent High-Grade Speaker Terminals
18mm Pitch High Grade Pre-outs
19mm-Pitch Audio Inputs
Gold plated RCA terminals
POWER
Power SupplyAC 120 V, 60 Hz
Independent Power Supply
H.C.P.S. (High Current Power Supply)
Toroidal Transformer
Power Consumption210 W
Standby Power0.35 W
GENERAL
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"
Weight8.0 kg (17 lb 10 oz)
Warranty2 Years
SPECS
Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)80 W (0.08% THD)
Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)155 W (10% THD)
Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)140 W (1% THD)
THD0.06% (20 Hz - 20 kHz, 1 Channel Driven, 50 W)
Input Sensitivity and Impedance (Line)200 mV/47 kΩ
S/N Ratio (Line, IHF-A)106 dB
Frequency Response (Analog In)5 Hz - 100 kHz/0 dB, -3 dB (Direct)
DSD Sampling Rates via HDMI2.8 MHz
Video Input Sensitivity/Output Level and Impedance 1 Vp-p/75 Ω (Composite)
Bluetooth Version3.0
Bluetooth Frequency2.4 GHz
HDMI TerminalType A (19-pin)
HDMI Output Type5 V, 55 mA
USB Terminal5 V, 0.5 A
FM Frequency87.5 MHz - 107.9 MHz
AM Frequency530 kHz - 1700 kHz

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

Successor

In 2018 Onkyo TX-SR373 was replaced by TX-SR383. Let us now have a look at some important changes that the successor brought.


UPGRADES Onkyo TX-SR383 Onkyo TX-SR373
More Channels 7.2 5.2
More Channel Processing 7.1 5.1
Dolby Atmos
Dolby Surround Upmixer
DTS:X
DTS Neural:X
More Zones 2 1
Bigger Power Supply 270 W 210 W

For more detailed comparison between the models please visit Onkyo TX-SR383 vs Onkyo TX-SR373.

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