Onkyo TX-SR373 (North American version)

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 68 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 Onkyo TX-SR373.

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	vs	Onkyo TX-SR353
More Channels	5.2	vs	5.1
Dolby Vision		vs

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

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.

Specifications

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

BASICS
Brand	Onkyo
Model	TX-SR373
Type	A/V Receiver
Country	North America
Release Year	2017

AMPLIFIER
Channels	5.2
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 Processing	5.1
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 USB	WMA, 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 Dialog 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+
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 Passthrough	up 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 ARC
HDCP Version	2.2
HDMI Input	4
HDMI Output	1
USB Input	1 (Front)
USB DC Out Port
Analog Audio Line Input	3
Analog Audio Line Output
Phono Input
Optical In	1
Optical Out
Coaxial In/Out	1 /
Composite Video Input	2
Composite Video Output	1
S-Video Input
S-Video Output
Component Video Input
Component Video Output
PC In
Multi-Channel Input
Analog Pre-Outs	0.2
XLR Inputs
XLR Pre-outs
Front A/V Inputs	USB
Speaker A/B
Headphone Out	6.3 mm

ZONES
Zones	1
Whole House Mode
RS-232
+12V Trigger Output	0
Remote (IR) Input/Output	0 / 0

MISC
On-Screen Display	via HDMI
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
Analog Tuner	FM/AM
Presets	30
Digital Radio
Internet Radio
Pandora
Spotify
Tidal
Deezer
Napster
SiriusXM Internet Radio

CONSTRUCTION
Solid Aluminum Front
Speaker Terminals	5
Large Speaker Terminals	2
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 Supply	AC 120 V, 60 Hz
Independent Power Supply
H.C.P.S. (High Current Power Supply)
Toroidal Transformer
Power Consumption	210 W
Standby Power	0.35 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"
Weight	8.0 kg (17 lb 10 oz)
Warranty	2 Years

SPECS
Power Output (8 Ω, 20 Hz - 20 kHz, 2	80 W (0.08% THD)
Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA)	155 W (10% THD)
Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)	140 W (1% THD)
THD	0.06% (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 HDMI	2.8 MHz
Video Input Sensitivity/Output Level and Impedance	1 Vp-p/75 Ω (Composite)
Bluetooth Version	3.0
Bluetooth Frequency	2.4 GHz
HDMI Terminal	Type A (19-pin)
HDMI Output Type	5 V, 55 mA
USB Terminal	5 V, 0.5 A
FM Frequency	87.5 MHz - 107.9 MHz
AM Frequency	530 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	vs	Onkyo TX-SR373
More Channels	7.2	vs	5.2
More Channel Processing	7.1	vs	5.1
Dolby Atmos		vs
Dolby Surround Upmixer		vs
DTS:X		vs
DTS Neural:X		vs
More Zones	2	vs	1
Bigger Power Supply	270 W	vs	210 W

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