Onkyo TX-SR393 vs Onkyo TX-SR383 Detailed Comparison

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Here we are comparing Onkyo TX-SR393 to Onkyo TX-SR383 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-SR393 has 5 channel and the Onkyo TX-SR383 has 7 channel and equally powerful amplifiers.

Let us have a look at some highlights of the models.

Onkyo TX-SR393 Highlights

Onkyo TX-SR383 Highlights

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

We have evaluated both receivers. Onkyo TX-SR393 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-SR393

Onkyo TX-SR383


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-SR393 over Onkyo TX-SR383

This section shows those features and specifications which are the reason to choose Onkyo TX-SR393 over Onkyo TX-SR383.

Onkyo TX-SR393 has bigger power supply, higher signal to noise ratio and higher bluetooth standard. It has DTS Dialog Control. In video department only Onkyo TX-SR393 supports Hybrid Log Gamma.

Onkyo TX-SR393 Onkyo TX-SR383
Certified 4 Ω Performance
Dolby Atmos Height Virtualization
DTS Virtual:X
DTS Dialog Control
Dialog Normalization
Virtual Speakers T-D (Theater-Dimensional)
Video Signal Upscaling 1080p to 4K
USB DC Out Port
Zone 2 Outs Zone B Line Out
More Presets 40 30
Bigger Power Supply 445 W 270 W
Higher S/N Ratio (Line, IHF-A) 109 db 106 dB
Newer Bluetooth Version 4.2 3.0

Advantage of Onkyo TX-SR383 over Onkyo TX-SR393

This section shows those features and specifications which are the reason to choose Onkyo TX-SR383 over Onkyo TX-SR393.

Onkyo TX-SR383 has more channels, more channel processing and lower total harmonic distortion.

Onkyo TX-SR393 Onkyo TX-SR383
More Channels 5.2 7.2
More Channel Processing 5.1 7.1
Music Playback via USB WMA, MP3, AAC
DSD via HDMI 2-ch 2-ch
USB Input 1 (Front)
More Composite Video Inputs 2
More Composite Video Outputs 1
Front A/V Inputs USB
More Powered Zones 2
More Speaker Terminals 5 7
Lower THD 0.08% (20 Hz - 20 kHz, Half power) 0.06% (20 Hz - 20 kHz, 1 Channel Driven, 50 W)

Common Strengths of Onkyo TX-SR393 and Onkyo TX-SR383

Onkyo TX-SR393 and Onkyo TX-SR383 share common strengths such as Dolby Atmos support, DTS:X support, HDR10, Dolby Vision and bluetooth.

STRENGTHS Onkyo TX-SR393 Onkyo TX-SR383
Dolby Atmos
DTS Neural:X
DSD via HDMI 2-ch 2-ch
Dolby Vision
4K or 8K Video Passthrough up to 4K/60p (RGB/YCbCr4:4:4) up to 4K/60p (4:4:4)
Bluetooth SBC, AAC SBC, AAC
New HDCP Version 2.3 (via future firmware update) 2.2
Zones 2 2
Analog Tuner FM/AM FM/AM

Common Weaknesses of Onkyo TX-SR393 and Onkyo TX-SR383

Onkyo TX-SR393 and Onkyo TX-SR383 share common weaknesses such as no front wide channel support, no Auro3D support, no MHL input, no ChromeCast, no DTS Play-Fi, no Amazon Alexa, no SONOS, no ethernet connection, no wi-fi, no phono input, no analog multi-channel input, no analog pre-outs, no internet radio, no Pandora, no Spotify, no Tidal, no Deezer, no Napster, no SiriusXM and no toroidal transformer.

WEAKNESSES Onkyo TX-SR393 Onkyo TX-SR383
No Front Wide Channel Support
No IMAX Enhanced
No Auro 3D with Auro-Matic Upmixer
No DSD via USB
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 MHL Input
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
Few HDMI Inputs 4 4
Few HDMI Outputs 1 1
Few Analog Audio Line Inputs 3 3
No Phono Input
No Component Video Inputs
No Multi-Channel Input
No Analog Pre-Outs 0.2 0.2
No Internet Radio
No Pandora
No Spotify
No Tidal
No Deezer
No Napster
No SiriusXM Internet Radio
No Toroidal Transformer

Selected Features


Onkyo TX-SR393 has 5 channel and Onkyo TX-SR383 has 7 channel amplifiers. They both deliver 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and have stable performance at 4 Ω load. 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. Onkyo TX-SR393 can do 4K upscaling. The receivers support HDR10, Dolby Vision.


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-SR393 and Onkyo TX-SR383 support Dolby Atmos with its Dolby Surround upmixer. The Onkyo TX-SR393 can be configured upto 3.1.2 channels and the Onkyo TX-SR383 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-SR393 and Onkyo TX-SR383 support DTS:X with its Neural:X upmixer. The Onkyo TX-SR393 can be configured upto 3.1.2 channels. The Onkyo TX-SR383 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-SR393 and Onkyo TX-SR383 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.


Onkyo TX-SR393

Onkyo TX-SR393 can also connect to bluetooth devices via built-in bluetooth adapter. It has 4 HDMI inputs with HDCP 2.3 (via future firmware update) copy protection.

Front panel has no inputs.

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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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Detailed 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-SR393 and here - Onkyo TX-SR383.

BASICS Onkyo TX-SR393 Onkyo TX-SR383
TypeA/V ReceiverA/V Receiver
CountryNorth AmericaNorth America
Release Year20192018
AMPLIFIER Onkyo TX-SR393 Onkyo TX-SR383
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 Onkyo TX-SR393 Onkyo TX-SR383
Maximum Channel Processing5.17.1
Air Studios Monitor Certification
Dolby Atmos
Dolby Atmos Height Virtualization
Dolby TrueHD
Dolby Digital Plus
Dolby Surround Upmixer
Dolby Pro Logic
Dolby Digital EX
THX Listening Modes
DTS Neural:X
DTS Virtual:X
DTS-HD Master Audio
DTS-HD High Resolution Audio
DTS 96/24
DTS Express
IMAX Enhanced
Auro 3D with Auro-Matic Upmixer
PCM 2-ch/Multi-ch Input 2-ch/Multi-ch Input
Music Playback via USBWMA, MP3, AAC
High Resolution Music Playback via USB and/or Network
DSD via HDMI 2-ch 2-ch
DSD to PCM Converter
Jitter Reduction
DTS Dialogue 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
Virtual Speakers T-D (Theater-Dimensional)
Auto Speaker Calibration System with Mic. AccuEQ AccuEQ
VIDEO Onkyo TX-SR393 Onkyo TX-SR383
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 (RGB/YCbCr4:4:4)up to 4K/60p (4:4:4)
Video Signal Upscaling 1080p to 4K
Analog To HDMI Upconversion
isf Certified Calibration Control
MHL Input
Chromecast Built-In
DTS Play-Fi
Works with Amazon Alexa
Works with SONOS
Apple Product Connection
Remote App
InstaPrevue Input Source Prevue
Ethernet Switch
Bluetooth SBC, AAC SBC, AAC
HDBaseT Compatible
Enhanced Audio Return Channel (eARC)
HDCP Version2.3 (via future firmware update)2.2
HDMI Inputs44
HDMI Outputs11
USB Input1 (Front)
USB DC Out Port
Analog Audio Line Inputs33
Analog Audio Line Outputs
Phono Input
Optical Inputs11
Optical Outputs
Coaxial Inputs/Outputs1 / No1 / No
Composite Video Inputs2
Composite Video Outputs1
S-Video Inputs
S-Video Outputs
Component Video Inputs
Component Video Outputs
Multi-Channel Input
Analog Pre-Outs0.20.2
XLR Inputs
XLR Pre-outs
Front A/V InputsUSB
Speaker A/B
Headphone Out 6.3 mm 6.3 mm
ZONES Onkyo TX-SR393 Onkyo TX-SR383
Powered Zones 2
Zone 2 OutsZone B Line Out
Whole House Mode
RS-232 Interface
+12V Trigger Output00
Remote (IR) Input/Output0 / 00 / 0
MISC Onkyo TX-SR393 Onkyo TX-SR383
On-Screen Display via HDMI
Detachable Power Cord
ONKYO-RI System Control
RIHD (Remote Interactive Over HDMI)
RADIO Onkyo TX-SR393 Onkyo TX-SR383
Analog Tuner FM/AM FM/AM
Digital Radio
Internet Radio
SiriusXM Internet Radio
Solid Aluminum Front
Speaker Terminals57
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-SR393 Onkyo TX-SR383
Power SupplyAC 120 V, 60 HzAC 120 V, 60 Hz
Independent Power Supply
H.C.P.S. (High Current Power Supply)
Toroidal Transformer
Power Consumption445 W270 W
Standby Power0.1 W0.2 W
GENERAL Onkyo TX-SR393 Onkyo TX-SR383
Dimensions (W x H x D)435 mm x 160 mm x 328 mm
17-1/8" x 6-5/16" x 12-15/16"
435 mm x 168 mm x 326.5 mm
17" x 6-1/2" x 13"
Weight8.2 kg (18.1 lb 10 oz)8.2 kg (18.1 lb 10 oz)
Warranty2 Years2 Years
SPECS Onkyo TX-SR393 Onkyo TX-SR383
Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)80 W (0.08% THD)80 W (0.08% THD)
Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)155 W (10% THD)155 W (10% THD)
THD0.08% (20 Hz - 20 kHz, Half power)0.06% (20 Hz - 20 kHz, 1 Channel Driven, 50 W)
Input Sensitivity and Impedance (Line)200 mV/47 kΩ (1 kHz, 100 W/8 Ω)200 mV/47 kΩ
S/N Ratio (Line, IHF-A)109 db106 dB
Frequency Response (Analog In)10 Hz - 100 kHz/+1 dB, -3 dB (Direct)5 Hz - 100 kHz/0 dB, -3 dB (Direct)
DSD Sampling Rates via HDMI2.8 MHz2.8 MHz
Bluetooth Version4.23.0
Bluetooth Frequency2.4 GHz2.4 GHz
USB Terminal5 V, 1 AVer. 2.0, 5 V, 1 A
FM Frequency87.5 MHz - 107.9 MHz87.5 MHz - 107.9 MHz
AM Frequency530 kHz - 1710 kHz530 kHz - 1710 kHz

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

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