Onkyo TX-SR383 vs Onkyo TX-SR373 Detailed Comparison

Onkyo TX-SR383

Onkyo TX-SR373

SCORE:
75
SCORE:
68

Highlights

  • 7.2 channels
  • 7.1 channel processing
  • 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
  • Dolby Atmos, DTS:X capable
  • HDR10, Dolby Vision, 4K Passthrough
  • Bluetooth
  • USB input

Highlights

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

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

Overview

Here we are comparing Onkyo TX-SR383 to Onkyo TX-SR373 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-SR383 has 7 channel and the Onkyo TX-SR373 has 5 channel amplifiers with Onkyo TX-SR383's being more powerful.

We have evaluated both receivers. Onkyo TX-SR383 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-SR383

Onkyo TX-SR373

AMPLIFIER
72
VIDEO FEATURES
87
AUDIO FEATURES
84
CONNECTIVITY
63
MULTIZONE
77
MISCELLANEOUS
47
RADIO
59
OVERALL
75
AMPLIFIER
70
VIDEO FEATURES
87
AUDIO FEATURES
64
CONNECTIVITY
63
MULTIZONE
55
MISCELLANEOUS
41
RADIO
59
OVERALL
68

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-SR383

This section shows those features and specifications which are the reason to choose Onkyo TX-SR383 over Onkyo TX-SR373.

Onkyo TX-SR383 has more channels, more power per channel, more channel processing, more zones and bigger power supply. It supports Dolby Atmos and DTS:X.

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
DTS Express vs
DTS-ES vs
More Zones 2 vs 1
More Speaker Terminals 7 vs 5
Bigger Power Supply 270 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)

Advantage of Onkyo TX-SR373

This section shows those features and specifications which are the reason to choose Onkyo TX-SR383 over Onkyo TX-SR373.

Onkyo TX-SR383 has more channels, more power per channel, more channel processing, more zones and bigger power supply. It supports Dolby Atmos and DTS:X.

Onkyo TX-SR383 vs Onkyo TX-SR373
Dolby Pro Logic vs PLII
DTS Neo vs Neo:6
Higher Power Output (6 Ω, 1 kHz, 1 channel driven, IEC) 135 W (1% THD) vs 140 W (1% THD)

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
👍   Dolby Vision
👍   3-D Ready
👍   4K or 8K Video Passthrough
👍   Bluetooth
👍   New HDCP Version
👍   USB Input
👍   Composite Video Inputs
👍   Composite Video Outputs
👍   Zones
👍   Analog Tuner
CONS
👍   No Front Wide Channel Support
👍   Not Certified 4 Ω Performance
👍   No Bi-amp Capability
👍   No Dolby Atmos Height Virtualization
👍   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 DSD via USB
👍   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
👍   Old Bluetooth Version

Amplifier

Onkyo TX-SR383 has 7 channel and Onkyo TX-SR373 has 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 and these models are no exceptions.


Video Features

Both receivers support 4K passthrough up to 60p. The receivers support 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.


Dolby Atmos and Dolby Surround upmixer

Onkyo TX-SR383 supports Dolby Atmos with its Dolby Surround upmixer. It can be configured upto 5.1.2 channels using internal amplifiers.

Dolby Atmos is the first cinematic audio format in which sounds exist as individual entities, called audio objects. In Dolby Atmos, any sound - the helicopter, a car screeching around a corner, a melodic bird call - can exist as an independent audio object, free of channel restrictions. They can be precisely placed and moved anywhere in your room, including overhead, to flow above and around you in three-dimensional space. Through the use of audio objects, overhead sound, and all the richness, clarity, and power of Dolby sound, Dolby Atmos turns your room into an amazing place for entertainment. You'll feel like you're inside the action, in ways you've never experienced before.

Dolby Atmos for the home represents every sound in the original cinema mix as an audio object. Extensions to the Dolby Audio™ codecs, along with an advanced scalable algorithm, allow Dolby Atmos to be delivered via Blu-ray Disc and streaming media. A spatially-coded substream is added to Dolby TrueHD or Dolby Digital Plus. A Dolby Atmos audio/video receiver (AVR) adapts the cinema experience to your home theater from seven speakers to as many as 34 in 24.1.10 configuration, recreating the original artistic concept. The format supports up to 128 simultaneous independent audio objects in a mix for rich, realistic, and breathtaking sound. It recreates the director's original concept through descriptive metadata to provide customized playback for home theater and delivers sounds above you through overhead speakers, special upward-firing Dolby Atmos speakers, or a Dolby Atmos enabled sound bar.

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.


DTS:X and Neural:X upmixer

Onkyo TX-SR383 supports DTS:X. It can be configured upto 5.1.2 channels using internal amplifiers.

A technique used in DTS:X is similar to the one used in Dolby Atmos. Instead of a fixed number of channels, DTS:X defines object locations from the listener in polar coordinates. An a/v receiver then dynamically renders sound according to the current speaker configuration. The speaker layout employed by DTS:X is the sum of Dolby Atmos and Auro-3D. It has standard 7.1 channel base layer, a 5 channel height layer above the base layer on the front and side walls, and 3 rows of speakers on the ceiling.

DTS Neural:X is an 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.


Advanced Music Optimizer

Compressed music enhancement in Onkyo TX-SR383 and 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.


Connectivity

Onkyo TX-SR383

Onkyo TX-SR383 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.

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Onkyo TX-SR373

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.

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Side by Side Comparison

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-SR383 and here - Onkyo TX-SR373.

BASICS Onkyo TX-SR383 vs Onkyo TX-SR373
BrandOnkyovsOnkyo
ModelTX-SR383vsTX-SR373
TypeA/V ReceivervsA/V Receiver
CountryAustraliavsNorth America
Release Year2018vs2017
AMPLIFIER Onkyo TX-SR383 vs Onkyo TX-SR373
Channels7.2vs5.2
Front Wide Channel Supportvs
Dynamic Audio Amplificationvs
Non-Phase Shift Amplifiervs
VLSC (Vector Linear Shaping Circuitry)vs
Optimum Gain Volume Circuitryvs
THX™ Certificationvs
Continuous 6 Ω Ratedvs
Certified 4 Ω Performancevs
Discrete Output Stage Circuitryvs
Independent Block Construction (Amp/Preprocessor)vs
Bi-amp Capabilityvs
BTL (Bridged Transless or Bridging)vs
AUDIO Onkyo TX-SR383 vs Onkyo TX-SR373
Maximum Channel Processing7.1vs5.1
Air Studios Monitor Certificationvs
Dolby Atmosvs
Dolby Atmos Height Virtualizationvs
Dolby TrueHDvs
Dolby Digital Plusvs
Dolby Surround Upmixervs
Dolby Pro Logicvs PLII
Dolby Digital EXvs
THX Listening Modesvs
DTS:Xvs
DTS Neural:Xvs
DTS Virtual:Xvs
DTS Neovs Neo:6
DTS-HD Master Audiovs
DTS-HD High Resolution Audiovs
DTS 96/24vs
DTS Expressvs
DTS-ESvs
IMAX Enhancedvs
Auro 3D with Auro-Matic Upmixervs
PCM 2-ch/Multi-ch Inputvs 2-ch/Multi-ch Input
Music Playback via USBWMA, MP3, AACvsWMA, MP3, AAC
High Resolution Music Playback via USB and/or Networkvs
Multi-Channel Music File Playback via USBvs
DSD via HDMI 2-chvs 2-ch
DSD via USBvs
DSD to PCM Convertervs
USB DACvs
Jitter Reductionvs
DTS Dialog Controlvs
Dialog Enhancementvs
Dialog Normalizationvs
Dialogue Liftvs
Tone Control Front L/R Channelsvs Front L/R Channels
Compressed Music Enhancer Advanced Music Optimizervs Advanced Music Optimizer
High-resolution Music Enhancervs
THX Processing Modevs
Audyssey Dynamic EQvs
Audyssey Dynamic Volumevs
Audyssey LFCvs
Audyssey Sub EQ HTvs
Audyssey DSXvs
Phase-Matching Bass Boostvs
Direct Modevs
Pure Audio Modevs
Pure Direct Analog Path Modevs
Virtual Speakersvs
CALIBRATION Onkyo TX-SR383 vs Onkyo TX-SR373
Auto Speaker Calibration System with Mic. AccuEQvs AccuEQ
VIDEO Onkyo TX-SR383 vs Onkyo TX-SR373
HDR10vs
HDR10+vs
BT.2020 color spacevs
Dolby Visionvs
HLG (Hybrid Log Gamma)vs
QMS (Quick Media Switching)vs
ALLM (Auto Low Latency Mode)vs
VRR (Variable Refresh Rate)vs
QFT (Quick Frame transport)vs
3-D Readyvs
Video Signal Passthroughup to 4K/60p (4:4:4)vsup to 4K/60p (4:4:4)
Video Signal Upscalingvs
Analog To HDMI Upconversionvs
isf Certified Calibration Controlvs
CONNECTIVITY Onkyo TX-SR383 vs Onkyo TX-SR373
MHL Inputvs
DLNA 1.5vs
FireConnectvs
FlareConnectvs
Chromecast Built-Invs
DTS Play-Fivs
Works with Amazon Alexavs
Works with SONOSvs
AirPlayvs
Apple Product Connectionvs
Remote Appvs
InstaPrevue Input Source Prevuevs
Ethernetvs
Ethernet Switchvs
Wi-Fivs
Bluetooth SBC, AACvs SBC, AAC
HDBaseT Compatiblevs
Enhanced ARCvs
HDCP Version2.2vs2.2
HDMI Input4vs4
HDMI Output1vs1
USB Input1 (Front)vs1 (Front)
USB DC Out Portvs
Analog Audio Line Input3vs3
Analog Audio Line Outputvs
Phono Inputvs
Optical In1vs1
Optical Outvs
Coaxial In/Out1 / vs1 /
Composite Video Input2vs2
Composite Video Output1vs1
S-Video Inputvs
S-Video Outputvs
Component Video Inputvs
Component Video Outputvs
PC Invs
Multi-Channel Inputvs
Analog Pre-Outs0.2vs0.2
XLR Inputsvs
XLR Pre-outsvs
Front A/V InputsUSBvsUSB
Speaker A/Bvs
Headphone Out 6.3 mmvs 6.3 mm
ZONES Onkyo TX-SR383 vs Onkyo TX-SR373
Zones2vs1
Whole House Modevs
RS-232vs
+12V Trigger Output0vs0
Remote (IR) Input/Output0 / 0vs0 / 0
MISC Onkyo TX-SR383 vs Onkyo TX-SR373
On-Screen Display via HDMIvs via HDMI
Detachable Power Cordvs
uportvs
ONKYO-RI System Controlvs
RIHD (Remote Interactive Over HDMI)vs
RADIO Onkyo TX-SR383 vs Onkyo TX-SR373
Analog Tuner FM/AMvs FM/AM
Presets30vs30
Digital Radiovs
Internet Radiovs
Pandoravs
Spotifyvs
Tidalvs
Deezervs
Napstervs
SiriusXM Internet Radiovs
CONSTRUCTION Onkyo TX-SR383 vs Onkyo TX-SR373
Solid Aluminum Frontvs
Speaker Terminals7vs5
Large Speaker Terminals2vs2
Color-Coded Speaker Terminalsvs
Transparent High-Grade Speaker Terminalsvs
18mm Pitch High Grade Pre-outsvs
19mm-Pitch Audio Inputsvs
Gold plated RCA terminalsvs
POWER Onkyo TX-SR383 vs Onkyo TX-SR373
Power SupplyAC 220-240 V, 50/60 HzvsAC 120 V, 60 Hz
Independent Power Supplyvs
H.C.P.S. (High Current Power Supply)vs
Toroidal Transformervs
Power Consumption270 Wvs210 W
Standby Power0.3 Wvs0.35 W
GENERAL Onkyo TX-SR383 vs Onkyo TX-SR373
Dimensions (W x H x D)435 mm x 168 mm x 326.5 mm
17" x 6-1/2" x 13"
vs435 mm x 168 mm x 326.5 mm
17-1/8" x 6-5/8" x 12-13/16"
Weight8.2 kg (18.1 lb 10 oz)vs8.0 kg (17 lb 10 oz)
Warranty2 Yearsvs2 Years
SPECS Onkyo TX-SR383 vs Onkyo TX-SR373
Power Output (8 Ω, 20 Hz - 20 kHz, 2100 W (0.09% THD)vs80 W (0.08% THD)
Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)135 W (1% THD)vs140 W (1% THD)
THD0.06% (20 Hz - 20 kHz, 1 Channel Driven, 50 W)vs0.06% (20 Hz - 20 kHz, 1 Channel Driven, 50 W)
Input Sensitivity and Impedance (Line)200 mV/47 kΩvs200 mV/47 kΩ
S/N Ratio (Line, IHF-A)106 dBvs106 dB
Frequency Response (Analog In)5 Hz - 100 kHz/0 dB, -3 dB (Direct)vs5 Hz - 100 kHz/0 dB, -3 dB (Direct)
DSD Sampling Rates via HDMI2.8 MHzvs2.8 MHz
Video Input Sensitivity/Output Level and Impedance1 Vp-p/75 Ω (Composite)vs1 Vp-p/75 Ω (Composite)
Bluetooth Version3.0vs3.0
Bluetooth Frequency2.4 GHzvs2.4 GHz
USB TerminalVer. 2.0, 5 V, 1 Avs5 V, 0.5 A
FM Frequency87.5 MHz - 107.9 MHzvs87.5 MHz - 107.9 MHz
AM Frequency531/530 kHz - 1602/1700 kHzvs530 kHz - 1700 kHz

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

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