Onkyo TX-SR333 (USA version)

•   Overview
•   Pros and Cons
•   Predecessor
•   Audio Section
•   Video Section
•   Multi-zone Playback
•   Inputs and Outputs
•   Specifications
•   Successor

Onkyo TX-SR333 was introduced in 2014. It is equipped with 5 channel amplifier with 65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) power per channel and is capable of 5.1 maximum channel processing. It passes 4K/60Hz video signal.

We evaluated the a/v 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.

In this section we present pros and cons of Onkyo TX-SR333.

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
Music Playback via USB	FLAC, WAV, Apple Lossless, mp3, Ogg, DSD	vs	FLAC, WMA, MP3, AAC
Higher Resolution Music Playback via USB	up to 192 kHz	vs
High Resolution Audio Formats via USB	FLAC, WAV, Apple Lossless, DSD	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
InstaPrevue Input Source Prevue		vs
Bluetooth		vs
More HDMI Inputs	6	vs	4
More RCA Line Inputs	7 (1 front)	vs	6 (1 front)
More Coaxial Inputs/Outputs	2	vs	1
More Zones	2	vs	1
Pre-Pro/Learning Remote	/	vs	/
Independent Power Supply	2	vs
Higher Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)	110 W (0.9% THD)	vs	100 W (1% THD)
Higher Dynamic Power per Channel, 8 Ω, Front)	85 W	vs	80 W

DOWNGRADES	Onkyo TX-SR333	vs	Onkyo TX-SR313
Optimum Gain Volume Circuitry		vs
Less Optical Outputs		vs
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
Front A/V Inputs	Composite Video, RCA audio	vs	USB, Composite Video, RCA Audio
Speaker A/B		vs
More Speaker Terminals	5	vs	7
Smaller Power Supply	3.2 A	vs	3.4 A
Higher THD	0.7% (20 Hz - 20 kHz, Half power)	vs	0.08% (20 Hz - 20 kHz, half power)
Lower Maximum Lineout Level and Impedance	1.0 V/2.2 kΩ	vs	2 V/2.2 kΩ (REC OUT)

For more detailed comparison between the models please visit Onkyo TX-SR333 vs Onkyo TX-SR313.

5 channel Amplifier

Onkyo TX-SR333 features 5 channel power amplifier. It is rated at 65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven).

• WRAT (Wide Range Amp Technology): 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.

Speaker Configurations

Onkyo TX-SR333's 5 channel amplifier can be assigned for different speaker configurations.

• Configurations: Available configurations are:
5.1 with internal amplifier.

Sound Processing

• 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.

HDMI

Onkyo TX-SR333 features 6 HDMI inputs. It has 1 output.

• 4K/60Hz Passthrough: All inputs pass up to 4K/60p (YCbCr 4:2:0) video signal.
• 3D Ready: Onkyo TX-SR333 is able to pass 3D video through HDMI.

Onkyo TX-SR333 offers multi-zone playback which allows you to play different input sources in 2 different rooms.

Zone 2

• Audio Line Output: If you have a dedicated integrated amplifier for Zone 2 you can connect it to the a/v receiver via line outs by sending fixed signal and then control volume on the Zone 2 amplifier.

Audio

• Analog Line Inputs and Outputs: There are 7 line inputs and 1 line output for analog audio connection.
• Digital Inputs and Outputs: 0 optical input, 1 optical output and 2 coaxial inputs are available for digital audio connection.
• Headphone Output: There is a 6.3 mm (1/4") headphone output jack on the front panel.

Video

• HDMI:
Inputs: 6   Outputs: 1
8K Inputs: 0
• Composite Video: Connect you VCR, Laserdisc player and other old video equipment with composite video cables.
Inputs: 4   Outputs: 1
• Component Video: Component video connection gives you the higher quality video compared to the composite video connection. So in case your old DVD player and other equipment do not have an HDMI output but have Component video output use this connection over the composite one.
Inputs: 1   Outputs: 1

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
DAC Specs	192 kHz/24 Bit
Maximum Channel Processing	5.1
Air Studios Monitor Certification
Dolby Atmos
Dolby Atmos Height Virtualization
Dolby Atmos Music
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
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 Subwoofer Outputs

CALIBRATION
Auto Speaker Calibration System with Mic.

VIDEO
Enhanced ARC
HDR10
HDR10+
Dynamic HDR
Dolby Vision
HLG (Hybrid Log Gamma)
BT.2020 color space
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
HDMI Inputs	6
HDMI Outputs	1
8K Inputs
USB Input	1 (Rear)
USB DC Out Port
RCA Line Input	7 (1 front)
RCA Line Output	1
XLR Line Inputs
Phono Input
Optical Inputs	1
Optical Outputs
Coaxial Inputs	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
RCA Pre-Outs	0.1
XLR Pre-outs
Front A/V Inputs	Composite Video, RCA audio
Speaker A/B
Headphone Out	6.3 mm (1/4")

ZONES
Zones	2
Powered Zones
Zone 2 Outs	RCA Line Out
Whole House Mode
RS-232C Interface
+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

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
DTS-ES		vs
Phase-Matching Bass Boost	for Deep Bass and Clear Mid-Range	vs
Analog To HDMI Upconversion	Component**, Composite	vs
USB DC Out Port	5 V, 1 A	vs
More Optical Outputs		vs
More Component Video Inputs	2	vs	1
Smart Grid-Ready		vs
More Large Speaker Terminals	2	vs	0
Bigger Power Supply	3.8 A	vs	3.2 A
Lower THD	0.08% (20 Hz - 20 kHz, half power)	vs	0.7% (20 Hz - 20 kHz, Half power)

DOWNGRADES	Onkyo TX-SR343	vs	Onkyo TX-SR333
AirPlay		vs	AirPlay via optional Onkyo RI Dock DS-A5 (sold separately)
InstaPrevue Input Source Prevue		vs
Less HDMI Inputs	4	vs	6
USB Input		vs	1 (Rear)
Less RCA 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
Color-Coded Speaker Terminals		vs
Lower Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)	100 W (1% THD)	vs	110 W (0.9% THD)
Lower Damping Factor	40 (Front, 1 kHz, 8 Ω)	vs	60 (Front, 1 kHz, 8 Ω)

For more detailed comparison between the models please visit Onkyo TX-SR333 vs Onkyo TX-SR343.