Onkyo TX-SR373 (North American version)

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 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...

In this section we present pros and cons of Onkyo TX-SR373.

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.

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.

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 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 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 Audio Return Channel (eARC)	✖
HDCP Version	2.2
HDMI Inputs	4
HDMI Outputs	1
USB Input	1 (Front)
USB DC Out Port	✖
Analog Audio Line Inputs	3
Analog Audio Line Outputs	✖
Phono Input	✖
Optical Inputs	1
Optical Outputs	✖
Coaxial Inputs/Outputs	1 / No
Composite Video Inputs	2
Composite Video Outputs	1
S-Video Inputs	✖
S-Video Outputs	✖
Component Video Inputs	✖
Component Video Outputs	✖
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 Interface	✖
+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	No / No
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 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)
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

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.