Onkyo TX-SR333 (USA version)

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Overview
Onkyo TX-SR333 was introduced in 2014. It is equipped with 5 channel amplifier and is capable of 5.1 maximum channel processing.
We evaluated the Receiver and gave 66 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-SR333.
PROS |
---|
👍 Dolby TrueHD |
👍 Dolby Digital Plus |
👍 Dolby Pro Logic |
👍 DTS Neo |
👍 DTS-HD Master Audio |
👍 DTS-HD High Resolution Audio |
👍 DTS 96/24 |
👍 DTS Express |
👍 High Resolution Music Playback via USB and/or Network |
👍 Gapless Playback |
👍 DSD via HDMI |
👍 DSD via USB |
👍 Compressed Music Enhancer |
👍 3-D Ready |
👍 4K or 8K Video Passthrough |
👍 Bluetooth |
👍 USB Input |
👍 Many Analog Audio Line Inputs |
👍 Composite Video Inputs |
👍 Composite Video Outputs |
👍 Component Video Inputs |
👍 Component Video Outputs |
👍 Zones |
👍 Analog Tuner |
👍 Independent Power Supply |
👍 H.C.P.S. (High Current Power Supply) |
CONS |
---|
👎 Not Certified 4 Ω Performance |
👎 No Bi-amp Capability |
👎 Few Channel Processing |
👎 No Dolby Atmos |
👎 No Dolby Atmos Height Virtualization |
👎 No Dolby Surround Upmixer |
👎 No DTS:X |
👎 No DTS Neural:X |
👎 No DTS Virtual:X |
👎 No IMAX Enhanced |
👎 No Auro 3D with Auro-Matic Upmixer |
👎 No DTS Dialog Control |
👎 No High-resolution Music Enhancer |
👎 No Auto Speaker Calibration System with Mic. |
👎 No HDR10 |
👎 No HDR10+ |
👎 No BT.2020 color space |
👎 No Dolby Vision |
👎 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 Outputs |
👎 No Phono Input |
👎 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 |
Major Changes from its predecessor
Here we are comparing Onkyo TX-SR333 to its predecessor TX-SR313 and displaying the major changes.
UPGRADES | Onkyo TX-SR333 | vs | Onkyo TX-SR313 |
---|---|---|---|
Higher Resolution Music Playback via USB | up to 192 kHz | vs | |
Gapless Playback | vs | ||
DSD via USB | 2-ch Input | vs | |
Video Signal Passthrough | up to 4K/60p (YCbCr 4:2:0) | vs | up to 1080p |
AirPlay | AirPlay via optional Onkyo RI Dock DS-A5 (sold separately) | vs | |
Bluetooth | vs | ||
More HDMI Inputs | 6 | vs | 4 |
More Analog Audio Line Inputs | 7 (1 front) | vs | 6 (1 front) |
More Coaxial Inputs/Outputs | 2 / | vs | 1 / |
More Zones | 2 | vs | 1 |
Independent Power Supply | 2 | vs |
DOWNGRADES | Onkyo TX-SR333 | vs | Onkyo TX-SR313 |
---|---|---|---|
Less Optical Inputs | 1 | vs | 2 |
Less Composite Video Inputs | 4 (1 front) | vs | 5 (1 front) |
Less Composite Video Outputs | 1 | vs | 2 |
Less Component Video Inputs | 1 | vs | 2 |
Smaller Power Supply | 3.2 A | vs | 3.4 A |
For more detailed comparison between the models please visit Onkyo TX-SR333 vs Onkyo TX-SR313.
Amplifier
Onkyo TX-SR333 has 5 channel amplifier and delivers 65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven).
Video Features
The Receiver has 4K passthrough up to 60p.
WRAT
Onkyo TX-SR333 features Onkyo’s Wide Range Amp Technology (WRAT) circuit layout that prevents phase shifting by pushing the roll-off point higher than the listening-level frequency. Amplifying sound without phase shift creates an uncommonly well-focused and realistic audio image. If phase shift occurs and signal timing is not accurate, then neither is the resulting audio image.
Advanced Music Optimizer
Compressed music enhancement in Onkyo TX-SR333 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-SR333 does not come with room correction system.
Connectivity
Onkyo TX-SR333 can also connect to bluetooth devices via built-in bluetooth adapter. The Receiver supports AirPlay via optional Onkyo RI Dock DS-A5 (sold separately). It has 6 HDMI inputs.
Front panel has Composite Video and RCA audio inputs.


Specifications
Here we list all the available features and specifications of Onkyo TX-SR333.
BASICS | |
---|---|
Brand | Onkyo |
Model | TX-SR333 |
Type | A/V Receiver |
Country | USA |
Release Year | 2014 |
AMPLIFIER | |
---|---|
Channels | 5.1 |
WRAT (Wide Range Amplifier Technology) | |
VLSC (Vector Linear Shaping Circuitry) | |
Optimum Gain Volume Circuitry | |
THX™ Certification | |
Continuous 6 Ω Rated | |
Certified 4 Ω Performance | |
Discrete Output Stage Circuitry | |
3-Stage Inverted Darlington Circuitry | |
PUSH-PULL Design | |
Independent Block Construction (Amp/Preprocessor) | |
Bi-amp Capability | |
BTL (Bridged Transless or Bridging) |
AUDIO | |
---|---|
Digital Signal Processing (DSP) Engine | 32-bit DSP |
DAC | Burr-Brown |
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 | |
Surround EX | |
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 | FLAC, WAV, Apple Lossless, mp3, Ogg, DSD |
High Resolution Music Playback via USB and/or Network | up to 192 kHz |
High Resolution Audio Formats via USB | FLAC, WAV, Apple Lossless, DSD |
Multi-Channel Music File Playback via USB | |
Gapless Playback | |
DSD via HDMI | 2-ch/Multi-ch Input |
DSD via USB | 2-ch Input |
DSD to PCM Converter | |
USB DAC | |
Jitter Reduction | PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio |
DTS Dialog Control | |
Dialog Enhancement | |
Dialog Level Adjustment | |
Dialog Normalization | |
Dialogue Lift | |
Tone Control | Front L/R Channels |
Compressed Music Enhancer | Advanced Music Optimizer (bluetooth included) |
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) |
Independent Dual Subwoofer Output |
CALIBRATION | |
---|---|
Auto Speaker Calibration System with Mic. |
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 (YCbCr 4:2:0) |
Video Signal Upscaling | |
Analog To HDMI Upconversion | |
Component Video Upscaling | |
Analog to Analog Video conversion | |
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 | AirPlay via optional Onkyo RI Dock DS-A5 (sold separately) |
Apple Product Connection | iPod and iPhone via optional Onkyo RI Dock DS-A5 (sold separately) |
Remote App | |
InstaPrevue Input Source Prevue | |
Ethernet | |
Ethernet Switch | |
Wi-Fi | |
Bluetooth | |
HDBaseT Compatible | |
Enhanced ARC | |
HDMI Input | 6 |
HDMI Output | 1 |
USB Input | 1 (Rear) |
USB DC Out Port | |
Analog Audio Line Input | 7 (1 front) |
Analog Audio Line Output | 1 |
Phono Input | |
Optical In | 1 |
Optical Out | |
Coaxial In/Out | 2 / |
Composite Video Input | 4 (1 front) |
Composite Video Output | 1 |
S-Video Input | |
S-Video Output | |
Component Video Input | 1 |
Component Video Output | 1 |
PC In | |
Multi-Channel Input | |
Analog Pre-Outs | 0.1 |
XLR Inputs | |
XLR Pre-outs | |
Front A/V Inputs | Composite Video, RCA audio |
Speaker A/B | |
Headphone Out | 6.3 mm |
ZONES | |
---|---|
Zones | 2 |
Powered Zones | |
Zone 2 | RCA Line Out |
Whole House Mode | |
RS-232 | |
+12V Trigger Output | 0 |
Remote (IR) Input/Output | 0 / 0 |
MISC | |
---|---|
On-Screen Display | |
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 | |
Activity Based Remote | |
Smart Grid-Ready |
RADIO | |
---|---|
Analog Tuner | FM/AM |
Presets | 40 |
Digital Radio | |
Internet Radio | |
Pandora | |
Spotify | |
Tidal | |
Deezer | |
Napster | |
SiriusXM Internet Radio |
CONSTRUCTION | |
---|---|
Solid Aluminum Front | |
Speaker Terminals | 5 |
Large Speaker Terminals | 0 |
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 | 2 |
H.C.P.S. (High Current Power Supply) | Massive High Power Transformer |
Toroidal Transformer | |
Power Consumption | 3.2 A |
No Sound Power | 55 W |
Standby Power | 0.2 W |
GENERAL | |
---|---|
ECO Mode / Hybrid Standby Function | |
Dimensions (W x H x D) | 435 mm x 150 mm x 321 mm 17-1/8" x 5-7/8" x 12-5/8" |
Weight | 7.6 kg (16.8 lbs) |
Warranty | 2 Years |
SPECS | |
---|---|
Power Output (8 Ω, 20 Hz - 20 kHz, 2 | 65 W (0.7% THD) |
Power Output (6 Ω, 1 kHz, 2 | 90 W (0.7% THD) |
Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA) | 120 W |
Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC) | 110 W (0.9% THD) |
Dynamic Power per Channel (3 Ω, Front) | 160 W |
Dynamic Power per Channel (4 Ω, Front) | 125 W |
Dynamic Power per Channel (8 Ω, Front) | 85 W |
THD | 0.7% (20 Hz - 20 kHz, Half power) |
Damping Factor | 60 (Front, 1 kHz, 8 Ω) |
Input Sensitivity and Impedance (Line) | 200 mV/47 kΩ (Line) |
Rated Lineout Level and Impedance | 100 mV/2.2 kΩ |
Maximum Lineout Level and Impedance | 1.0 V/2.2 kΩ |
S/N Ratio (Line, IHF-A) | 100 dB |
Frequency Response (Analog In) | 5 Hz - 100 kHz/+1 dB, -3 dB (Direct Mode) |
DSD Sampling Rates via HDMI | 2.8 MHz |
DSD Sampling Rates via USB | 2.8 MHz |
Video Input Sensitivity/Output Level and Impedance | 1 Vp-p/75 Ω (Component Y) 0.7 Vp-p/75 Ω (Component PB/CB, PR/CR) 1 Vp-p/75 Ω (Composite) |
Video Frequency Response | 5 Hz - 100 MHz/+0 dB, -3 dB (Component) |
Ethernet Standard | |
Bluetooth Version | 2.1 + EDR |
Bluetooth Frequency | 2.4 GHz |
FM Frequency | 87.5 MHz - 107.9 MHz |
AM Frequency | 522/530 kHz - 1611/1710 kHz |
* - 480i/576i and 480p/576p only
** - 480i/576i only
*** - no 1080p/24 upconversion
**** - 1080p signal is not converted
Successor
In 2015 Onkyo TX-SR333 was replaced by TX-SR343. Let us now have a look at some important changes that the successor brought.
UPGRADES | Onkyo TX-SR343 | vs | Onkyo TX-SR333 |
---|---|---|---|
Phase-Matching Bass Boost | for Deep Bass and Clear Mid-Range | vs | |
Analog To HDMI Upconversion | Component**, Composite | vs | |
More Optical Inputs | 2 | vs | 1 |
More Component Video Inputs | 2 | vs | 1 |
Bigger Power Supply | 3.8 A | vs | 3.2 A |
DOWNGRADES | Onkyo TX-SR343 | vs | Onkyo TX-SR333 |
---|---|---|---|
AirPlay | vs | AirPlay via optional Onkyo RI Dock DS-A5 (sold separately) | |
Less HDMI Inputs | 4 | vs | 6 |
USB Input | vs | 1 (Rear) | |
Less Analog Audio Line Outputs | vs | 1 | |
Less Coaxial Inputs/Outputs | 1 / | vs | 2 / |
Less Composite Video Inputs | 3 (1 front) | vs | 4 (1 front) |
Less Composite Video Outputs | vs | 1 | |
Less Component Video Outputs | vs | 1 | |
Less Zones | 1 | vs | 2 |
For more detailed comparison between the models please visit Onkyo TX-SR343 vs Onkyo TX-SR333.