Onkyo TX-NR737 vs Onkyo TX-SR333

      Onkyo TX-NR737

      Onkyo TX-SR333
      83
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      68
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      Taiwan Europe Others
      USA Taiwan Europe, Australia and Asia
      Others
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      Highlights

      • 7.2 Channels
      • 7.1 Channel Processing
      • 110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      • THX™Select™2 Plus Certified
      • Dolby Atmos
      • 4K/60Hz Passthrough, 4K/30Hz Upscaling
      • Wi-Fi, Bluetooth, Ethernet
      • Phono Input

      Highlights

      • 5.1 Channels
      • 5.1 Channel Processing
      • 65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      • 4K/60Hz Passthrough
      • Bluetooth

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

      Table of Contents
      1. Overview
      2. Pros and Cons
      3. Advantage of Onkyo TX-NR737
      4. Advantage of Onkyo TX-SR333
      5. Common Strengths and Weaknesses
      6. Amplifier
      7. Speaker Configurations
      8. Immersive Audio Formats
      9. HDMI
      10. Inputs and Outputs
      11. Evaluations
      12. Specifications

      1. Overview

      Here we are comparing Onkyo TX-NR737 to Onkyo TX-SR333 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-NR737 has 7 channel and the Onkyo TX-SR333 has 5 channel amplifiers with Onkyo TX-NR737's being more powerful.


      Onkyo TX-NR737 Onkyo TX-SR333

      Onkyo TX-NR737 was introduced in 2014. It is equipped with 7 channel amplifier with 110 W (8 Ω, 20 Hz - 20 kHz and 2 channel driven) power per channel and is capable of 7.1 maximum channel processing. It supports Dolby Atmos, passes 4K/60Hz and upscales up to 4K/30p (Marvell Qdeo) video signal.

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

      We evaluated Onkyo TX-NR737 and Onkyo TX-SR333 and gave them scores of 83 and 68 out of 100 recpectively. Our ranking system is based on the amplifier specifications, audio and video features, connectivity, multizone capabilities, radio and many other details.

      Onkyo TX-NR737

      Onkyo TX-SR333

      Amplifier
      91
      Amplifier
      71
      Audio Features
      81
      Audio Features
      68
      Video Features
      71
      Video Features
      66
      Connectivity
      83
      Connectivity
      66
      Zones
      83
      Zones
      64
      Radio
      90
      Radio
      66
      OVERALL
      83
      OVERALL
      68

      For more details about the ranking please go to    Evaluations section.

      2. Pros and Cons

      In this section we present pros and cons of Onkyo TX-NR737 and Onkyo TX-SR333.

      PROS

      Onkyo TX-NR737

      Onkyo TX-SR333

      •   High Power Output - 110 W
      •   THX™ Certification
      •   Dolby Atmos
      •   DSD via HDMI
      •   Auto Speaker Calibration System with Mic.
      •   New HDCP Version
      •   Analog To HDMI Upconversion
      •   Wi-Fi
      •   Bluetooth
      •   7 HDMI Inputs
      •   USB Input
      •   Many RCA Line Inputs
      •   Phono Input
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet
      •   3 Zones
      •   Analog Tuner
      •   Pandora
      •   Spotify
      •   Independent Power Supply
      •   DSD via HDMI
      •   Bluetooth
      •   USB Input
      •   Many RCA Line Inputs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Analog Tuner
      •   Independent Power Supply

      CONS

      Onkyo TX-NR737

      Onkyo TX-SR333

      •   No Front Wide Channel Support
      •   No Dolby Atmos Height Virtualization
      •   No DTS:X
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   No HDR10
      •   No HDR10+
      •   No Dolby Vision
      •   No eARC
      •   No 8K Passthrough
      •   Does not Work with Amazon Alexa
      •   0 8K Input
      •   No RCA Pre-Outs
      •   No Digital Radio
      •   No Tidal
      •   Bluetooth 2․1 + EDR
      •   Few Channels - 5.1
      •   Low Power Output - 65 W
      •   5.1 Channel Processing
      •   No Dolby Atmos
      •   No Dolby Atmos Height Virtualization
      •   No DTS:X
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   No Auto Speaker Calibration System with Mic.
      •   No HDR10
      •   No HDR10+
      •   No Dolby Vision
      •   No eARC
      •   No 8K Passthrough
      •   No Wi-Fi
      •   Does not Work with Amazon Alexa
      •   1 HDMI Outputs
      •   0 8K Input
      •   No Phono Input
      •   No RCA Pre-Outs
      •   No Ethernet
      •   No Digital Radio
      •   No Pandora
      •   No Spotify
      •   No Tidal
      •   Bluetooth 2․1 + EDR


      And here are some specifications which fall into average criteria and are neither in PROs nor in CONs category:

      AVERAGE

      Onkyo TX-NR737

      Onkyo TX-SR333

      •   7.2 Channels
      •   7.1 Channel Processing
      •   2 HDMI Outputs
      •   6 HDMI Inputs
      •   2 Zones

      3. Advantage of Onkyo TX-NR737

      This section shows those features and specifications which are the reason to choose Onkyo TX-NR737 over Onkyo TX-SR333.

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      Onkyo TX-NR737
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      Onkyo TX-NR737 vs Onkyo TX-SR333
      More Channels 7.2 vs 5.1
      Higher Power Output 110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) vs 65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Optimum Gain Volume Circuitry vs
      THX™ Certification Select™2 Plus vs
      Certified 4 Ω Performance vs
      3-Stage Inverted Darlington Circuitry All Channels vs
      Bi-amp capability vs
      More Channel Processing 7.1 vs 5.1
      Dolby Atmos vs
      Dolby Surround Upmixer vs
      Surround EX also known as Dolby Digital Surround EX vs
      DTS-ES Discrete 6.1, Matrix 6.1 vs
      Music Playback via USB FLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, AAC, LPCM, Dolby TruHD vs FLAC, WAV, Apple Lossless, mp3, Ogg, DSD
      High Resolution Audio Formats via USB FLAC, WAV, WMA Lossless, Apple Lossless, DSD, AAC vs FLAC, WAV, Apple Lossless, DSD
      Dialog Normalization vs
      THX Processing Mode vs
      Phase-Matching Bass Boost for Deep Bass and Clear Mid-Range vs
      More Advanced Auto Speaker Calibration System AccuEQ vs
      Video Signal Upscaling up to 4K/30p (Marvell Qdeo) vs
      Analog To HDMI Upconversion Component**, Composite vs
      Wi-Fi vs
      MHL Input Front HDMI vs
      DLNA 1.5 vs
      Remote Controll App Onkyo Remote App for iPod touch/iPhone and Android-Powered Devices vs
      More HDMI Inputs 7 (1 front) vs 6
      More HDMI Outputs 2 (simultaneous) vs 1
      Phono Input vs
      Ethernet vs
      Front A/V Inputs HDMI/MHL, USB vs Composite Video, RCA audio
      More Zones 3 vs 2
      More Powered Zones 2 vs
      Whole House Mode vs
      On-Screen Display Advanced "Home" GUI vs
      On Screen Remote Programming vs
      Smart Grid-Ready vs
      Internet Radio TuneIn vs
      Pandora vs
      Spotify vs
      SiriusXM vs
      More Speaker Terminals 9 vs 5
      More Large Speaker Terminals 9 vs 0
      Higher Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC) 110 W (0.08% THD) vs 65 W (0.7% THD)
      Higher Power Output (6 Ω, 1 kHz, 2 channel driven, FTC) 125 W (0.7% THD) vs 90 W (0.7% THD)
      Higher Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA) 185 W vs 120 W
      Higher Power Output (6 Ω, 1 kHz, 1 channel driven, IEC) 170 W (1% THD) vs 100 W (1% THD)
      Higher Dynamic Power per Channel, 3 Ω, Front) 250 W vs 160 W
      Higher Dynamic Power per Channel, 4 Ω, Front) 220 W vs 125 W
      Higher Dynamic Power per Channel, 8 Ω, Front) 130 W vs 85 W
      Lower THD 0.08% (20 Hz - 20 kHz, Half power) vs 0.7% (20 Hz - 20 kHz, Half power)
      Higher Maximum Lineout Level and Impedance 2 V/2.2 kΩ vs 1.0 V/2.2 kΩ
      Higher S/N Ratio (Line, IHF-A) 106 dB vs 100 dB
      Higher DSD Sampling Rate via HDMI 2.8 MHz, 5.6 MHz vs 2.8 MHz

      4. Advantage of Onkyo TX-SR333

      This section shows those features and specifications which are the reason to choose Onkyo TX-SR333 over Onkyo TX-NR737.

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      Onkyo TX-SR333
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      Onkyo TX-NR737 vs Onkyo TX-SR333
      Dolby Pro Logic vs PLII
      Higher Resolution Music Playback via USB up to 96 kHz vs up to 192 kHz
      More RCA Line Inputs 6 vs 7 (1 front)
      More RCA Line Outputs vs 1
      More Composite Video Inputs 3 vs 4 (1 front)
      Analog Tuner FM/AM vs FM/AM with RDS

      5. Common Strengths and Weaknesses

      We already listed pros and cons of each model. However, you may also find useful to look at their common strengths and weaknesses shown side-by-side.

      STRENGTHS Onkyo TX-NR737 Onkyo TX-SR333
        DSD via HDMI 2-ch/Multi-ch Input 2-ch/Multi-ch Input
        Bluetooth
        USB Input1 (Front)1 (Rear)
        Many RCA Line Inputs67 (1 front)
        Composite Video Inputs34 (1 front)
        Component Video Inputs11
        Analog Tuner FM/AM FM/AM with RDS
        Independent Power Supply22
      WEAKNESSES Onkyo TX-NR737 Onkyo TX-SR333
        No Dolby Atmos Height Virtualization
        No DTS:X
        No IMAX Enhanced
        No Auro 3D with Auro-Matic Upmixer
        No HDR10
        No HDR10+
        No Dolby Vision
        No eARC
        No 8K Passthroughup to 4K/60p (YCbCr 4:2:0)up to 4K/60p (YCbCr 4:2:0)
        Does not Work with Amazon Alexa
        Few 8K Inputs
        No RCA Pre-Outs0.20.1
        No Digital Radio
        No Tidal
        Old Bluetooth Version2․1 + EDR2․1 + EDR

      6. Amplifier

      Onkyo TX-NR737 Onkyo TX-SR333

      7 channel Amplifier: Onkyo TX-NR737 features 7 channel power amplifier. It is rated at 110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and is able to drive 4 ohm speakers.

      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-NR737 and Onkyo TX-SR333 feature 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.

      THX™ Select™2 Plus certification

      Onkyo TX-NR737 is THX™ Select™2 Plus certified. This means that it is ideally suited for a room where the screen-to-seat viewing distance is approximately 3 to 4 meters, and the room size is approximately 56 cubic meters.

      AMPLIFIER Onkyo TX-NR737 Onkyo TX-SR333
      Channels7.25.1
      Power Output110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      WRAT (Wide Range Amplifier Technology)
      VLSC (Vector Linear Shaping Circuitry)
      Optimum Gain Volume Circuitry
      THX™ Certification Select™2 Plus
      Continuous 6 Ω Rated
      Certified 4 Ω Performance
      Discrete Output Stage Circuitry
      3-Stage Inverted Darlington Circuitry All Channels
      PUSH-PULL Design
      Independent Block Construction (Amp/Preprocessor)
      Bi-amp Capability
      BTL (Bridged Transless or Bridging)

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      Onkyo TX-NR737
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      7. Speaker Configurations

      Onkyo TX-NR737's and Onkyo TX-SR333's amplifiers can be assigned for different speaker configurations.

      • Dolby Atmos Configurations: The following speaker configurations are supported for Dolby Atmos:
      • Onkyo TX-NR737: 5.2.2 with internal amplifier.
      • Onkyo TX-SR333: Not supported.
      • Configurations without height channels: There are also other speaker configurations available which do not include height channels:
      • Onkyo TX-NR737: 5.2, 7.2 with internal amplifier.
      • Onkyo TX-SR333: 5.1 with internal amplifier.
      • Bi-Amp: Onkyo TX-NR737 is able to bi-amp up to 2 main channels simultaneously. During bi-amplification two amplifiers are used for one speaker. One amplifier powers the midrange and tweeter section of the speaker and another amplifier powers the low frequency woofers. Each amplifier is less loaded and performs better. In order to use this feature speakers must have 2 pairs of connectors.

      8. Immersive Audio Formats

      Dolby Atmos

      Onkyo TX-NR737 supports Dolby Atmos.

      • Dolby Surround Upmixer: Onkyo TX-NR737 supports Dolby Surround Upmixer. 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.
      AUDIO DECODING Onkyo TX-NR737 Onkyo TX-SR333
      Dolby Atmos
      Dolby Atmos Height Virtualization
      Dolby Atmos Music
      Dolby TrueHD
      Dolby Digital Plus
      Dolby Surround Upmixer
      Dolby Pro Logic PLII
      Surround EX also known as Dolby Digital Surround EX
      DTS:X
      DTS Neural:X
      DTS Virtual:X
      DTS Neo Neo:6 Neo:6
      DTS-HD Master Audio
      DTS-HD High Resolution Audio
      DTS 96/24
      DTS Express
      DTS-ES Discrete 6.1, Matrix 6.1
      IMAX Enhanced
      Auro 3D with Auro-Matic Upmixer

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      Onkyo TX-SR333
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      9. HDMI

      Onkyo TX-NR737 comes with 7 HDMI inputs. It has 2 outputs which work parallelly and output the same signal.

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

      • 4K/60Hz Passthrough: On both receivers all inputs pass up to 4K/60p (YCbCr 4:2:0) video signal.
      • 4K Upscaling on Onkyo TX-NR737: It can upscale up to 4K/30p (Marvell Qdeo) from HDMI and analog sources.
      • Analog To HDMI Upconversion: Onkyo TX-NR737 supports analog to HDMI Upconversion, so you can input your analog video sources and output them digitally via HDMI. This means that you will need only one HDMI cable to connect to your TV.
      • HDCP 2.2 Copy Protection: Onkyo TX-NR737 is HDCP 2.2 compliant which is a requirement for 4K/HDR copy-protected content transmission.
      • 3D Ready: Both receivers are able to pass 3D video through HDMI.


      VIDEO FEATURES Onkyo TX-NR737 Onkyo TX-SR333
      HDR10
      HDR10+
      Dynamic HDR
      BT.2020 color space
      Dolby Vision
      HLG (Hybrid Log Gamma)
      HDBaseT Compatible
      Enhanced Audio Return Channel (eARC)
      QMS (Quick Media Switching)
      ALLM (Auto Low Latency Mode)
      VRR (Variable Refresh Rate)
      QFT (Quick Frame transport)
      3-D Ready
      Video Signal Passthroughup to 4K/60p (YCbCr 4:2:0)up to 4K/60p (YCbCr 4:2:0)
      Video Signal Upscaling up to 4K/30p (Marvell Qdeo)

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      Onkyo TX-NR737
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      10. Inputs and Outputs

      Audio

      • Phono Input: There is an MM phono input on Onkyo TX-NR737 with built-in phono stage for connecting the moving magnet cartridge output of the turntable directly to the receiver.
      • Analog Line Inputs and Outputs: There are 6 pair of line inputs on Onkyo TX-NR737 and 7 pair of line inputs on Onkyo TX-SR333 for connecting sources with analog outputs. There is also 1 pair of line outputs on Onkyo TX-SR333.
      • Digital Inputs: 1 optical input and 2 coaxial inputs are available for digital audio connections on both receivers.
      • Headphone Output: There is a 6.3 mm (1/4") headphone output jack on the front panel of each receiver.

      Video

      • HDMI:
      • Onkyo TX-NR737
        Inputs:         7 (1 front)   Outputs: 2 (simultaneous)
        8K Inputs: 0.
      • Onkyo TX-SR333
        Inputs:         6   Outputs: 1
        8K Inputs: 0.
      • Composite Video: Connect you VCR, Laserdisc player and other old video equipment with composite video cables.
      • Onkyo TX-NR737
        Inputs:         3   Outputs: 1.
      • Onkyo TX-SR333
        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.
      • Onkyo TX-NR737 supports up to 1080i resolution on Component video connectors. resolution on Component video connectors.
      • Onkyo TX-NR737
        Inputs:         1   Outputs: 1.
      • Onkyo TX-SR333
        Inputs:         1   Outputs: 1.

      Front A/V Inputs

      • Onkyo TX-NR737: HDMI/MHL, USB
      • Onkyo TX-SR333: Composite Video, RCA audio

      Onkyo TX-NR737

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      Onkyo TX-SR333

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      TERMINALS Onkyo TX-NR737 Onkyo TX-SR333
      HDMI Inputs7 (1 front)6
      HDMI Outputs2 (simultaneous)1
      8K Inputs
      USB Input1 (Front)1 (Rear)
      USB DC Out Port
      Optical Inputs11
      Optical Outputs
      Coaxial Inputs22
      RCA Line Inputs67 (1 front)
      RCA Line Outputs1
      XLR Line Inputs
      Phono Input
      Multi-Channel Input
      RCA Pre-Outs0.20.1
      XLR Pre-outs
      Composite Video Inputs34 (1 front)
      Composite Video Outputs11
      S-Video Inputs
      S-Video Outputs
      Component Video Inputs11
      Component Video Outputs11

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      Onkyo TX-SR333
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      11. Evaluations

      We evaluated Onkyo TX-NR737 and Onkyo TX-SR333 and gave them scores of 83 and 68 out of 100 recpectively. We also gave separate scores for 7 different categories according to the available features and specifications some of which are listed below. These evaluations are relative and may change each time a new receiver is added to the database.


      Onkyo TX-NR737

      Onkyo TX-SR333

      OVERALL
      83
      OVERALL
      68

      Amplifier

      EXCELLENT
      91
      •   7.2 Channels
      •   High Power Output - 110 W
      •   THX™ Certification
      •   Independent Power Supply
      GOOD
      71
      •   Few Channels - 5.1
      •   Low Power Output - 65 W
      •   Independent Power Supply

      Audio Features

      GOOD
      81
      •   7.2 Channels
      •   No Front Wide Channel Support
      •   7.1 Channel Processing
      •   Dolby Atmos
      •   No Dolby Atmos Height Virtualization
      •   No DTS:X
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   DSD via HDMI
      AVERAGE
      68
      •   Few Channels - 5.1
      •   5.1 Channel Processing
      •   No Dolby Atmos
      •   No Dolby Atmos Height Virtualization
      •   No DTS:X
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   DSD via HDMI

      Video Features

      GOOD
      71
      •   No HDR10
      •   No HDR10+
      •   No Dolby Vision
      •   No 8K Passthrough
      •   Analog To HDMI Upconversion
      AVERAGE
      66
      •   No HDR10
      •   No HDR10+
      •   No Dolby Vision
      •   No 8K Passthrough

      Connectivity

      GOOD
      83
      •   No eARC
      •   New HDCP Version
      •   Wi-Fi
      •   Bluetooth
      •   Does not Work with Amazon Alexa
      •   7 HDMI Inputs
      •   2 HDMI Outputs
      •   0 8K Input
      •   USB Input
      •   Many RCA Line Inputs
      •   Phono Input
      •   No RCA Pre-Outs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet
      •   Bluetooth 2․1 + EDR
      AVERAGE
      66
      •   No eARC
      •   No Wi-Fi
      •   Bluetooth
      •   Does not Work with Amazon Alexa
      •   6 HDMI Inputs
      •   1 HDMI Outputs
      •   0 8K Input
      •   USB Input
      •   Many RCA Line Inputs
      •   No Phono Input
      •   No RCA Pre-Outs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   No Ethernet
      •   Bluetooth 2․1 + EDR

      Zones

      GOOD
      83
      •   3 Zones
      AVERAGE
      64
      •   2 Zones

      Radio

      EXCELLENT
      90
      •   Analog Tuner
      •   Pandora
      •   Spotify
      •   No Tidal
      AVERAGE
      66
      •   Analog Tuner
      •   No Pandora
      •   No Spotify
      •   No Tidal

      12. Specifications

      GENERAL Onkyo TX-NR737 Onkyo TX-SR333
      BrandOnkyoOnkyo
      ModelTX-NR737TX-SR333
      TypeA/V ReceiverA/V Receiver
      CountryUSAOthers
      Release Year20142014
      PredecessorOnkyo TX-NR727 Onkyo TX-SR313
      SuccessorOnkyo TX-NR747 Onkyo TX-SR343
      AMPLIFIER Onkyo TX-NR737 Onkyo TX-SR333
      Channels7.25.1
      Power Output110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Front Wide Channel Support
      WRAT (Wide Range Amplifier Technology)
      VLSC (Vector Linear Shaping Circuitry)
      Optimum Gain Volume Circuitry
      THX™ Certification Select™2 Plus
      Continuous 6 Ω Rated
      Certified 4 Ω Performance
      Discrete Output Stage Circuitry
      3-Stage Inverted Darlington Circuitry All Channels
      PUSH-PULL Design
      Independent Block Construction (Amp/Preprocessor)
      Bi-amp Capability
      BTL (Bridged Transless or Bridging)
      AUDIO FEATURES Onkyo TX-NR737 Onkyo TX-SR333
      Digital Signal Processing (DSP) EngineDual 32-bit DSP for Powerful Advanced Processing32-bit DSP
      DACBurr-BrownBurr-Brown
      DAC Specs192 kHz/24 Bit192 kHz/24 Bit
      Maximum Channel Processing7.15.1
      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 also known as Dolby Digital Surround EX
      DTS:X
      DTS Neural:X
      DTS Virtual:X
      DTS Neo Neo:6 Neo:6
      DTS-HD Master Audio
      DTS-HD High Resolution Audio
      DTS 96/24
      DTS Express
      DTS-ES Discrete 6.1, Matrix 6.1
      IMAX Enhanced
      Auro 3D with Auro-Matic Upmixer
      PCM 2-ch/Multi-ch Input 2-ch/Multi-ch Input
      Music Playback via USBFLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, AAC, LPCM, Dolby TruHDFLAC, WAV, Apple Lossless, mp3, Ogg, DSD
      High Resolution Music Playback via USB and/or Network up to 96 kHz up to 192 kHz
      High Resolution Audio Formats via USBFLAC, WAV, WMA Lossless, Apple Lossless, DSD, AACFLAC, WAV, Apple Lossless, DSD
      Gapless Playback
      DSD via HDMI 2-ch/Multi-ch Input 2-ch/Multi-ch Input
      DSD via USB 2-ch Input 2-ch Input
      DSD to PCM Converter
      USB DAC
      Jitter Reduction PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio
      DTS Dialogue Control
      Dialog Enhancement
      Dialog Level Adjustment
      Dialog normalization
      Dialogue Lift
      Tone Control Front L/R Channels Front L/R Channels
      Compressed Music Enhancer Advanced Music Optimizer (bluetooth included) 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 for Deep Bass and Clear Mid-Range
      Direct Mode
      Pure Audio Mode
      Pure Direct Analog Path Mode
      Virtual Speakers T-D (Theater-Dimensional) T-D (Theater-Dimensional)
      Independent Subwoofer Outputs
      CALIBRATION Onkyo TX-NR737 Onkyo TX-SR333
      Auto Speaker Calibration System with Mic. AccuEQ
      VIDEO FEATURES Onkyo TX-NR737 Onkyo TX-SR333
      HDR10
      HDR10+
      Dynamic HDR
      BT.2020 color space
      Dolby Vision
      HLG (Hybrid Log Gamma)
      HDBaseT Compatible
      Enhanced Audio Return Channel (eARC)
      HDCP Version2.2
      QMS (Quick Media Switching)
      ALLM (Auto Low Latency Mode)
      VRR (Variable Refresh Rate)
      QFT (Quick Frame transport)
      3-D Ready
      Video Signal Passthroughup to 4K/60p (YCbCr 4:2:0)up to 4K/60p (YCbCr 4:2:0)
      Video Signal Upscaling up to 4K/30p (Marvell Qdeo)
      Analog To HDMI Upconversion Component**, Composite
      Component Video Upscaling
      Analog to Analog Video conversion
      Component Video Maximum Resolution1080i
      isf Certified Calibration Control
      CONNECTIVITY Onkyo TX-NR737 Onkyo TX-SR333
      Wi-Fi
      Bluetooth
      Works with Amazon Alexa
      Chromecast Built-In
      Works with SonoS
      DTS Play-Fi
      MHL Input Front HDMI
      DLNA 1.5
      AirPlay AirPlay via optional Onkyo RI Dock DS-A5 (sold separately) 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) iPod and iPhone via optional Onkyo RI Dock DS-A5 (sold separately)
      Remote AppOnkyo Remote App for iPod touch/iPhone and Android-Powered Devices
      InstaPrevue Input Source Prevue
      TERMINALS Onkyo TX-NR737 Onkyo TX-SR333
      HDMI Inputs7 (1 front)6
      HDMI Outputs2 (simultaneous)1
      8K Inputs
      USB Input1 (Front)1 (Rear)
      USB DC Out Port
      Optical Inputs11
      Optical Outputs
      Coaxial Inputs22
      RCA Line Inputs67 (1 front)
      RCA Line Outputs1
      XLR Line Inputs
      Phono Input
      Multi-Channel Input
      RCA Pre-Outs0.20.1
      XLR Pre-outs
      Composite Video Inputs34 (1 front)
      Composite Video Outputs11
      S-Video Inputs
      S-Video Outputs
      Component Video Inputs11
      Component Video Outputs11
      Ethernet
      Ethernet Switch
      PC In
      Front A/V InputsHDMI/MHL, USBComposite Video, RCA audio
      Speaker A/B
      Headphone Out6.3 mm (1/4")6.3 mm (1/4")
      Detachable Power Cord
      uport
      ZONES Onkyo TX-NR737 Onkyo TX-SR333
      Number of Zones32
      Powered Zones 2
      Zone 2 OutsRCA Line OutRCA Line Out
      Zone 3 OutsRCA Line Out
      Whole House Mode
      RS-232C Interface
      +12V Trigger Output00
      Remote (IR) Input/Output0 / 00 / 0
      MISCELLANEOUS Onkyo TX-NR737 Onkyo TX-SR333
      On-Screen Display Advanced "Home" GUI
      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 Onkyo TX-NR737 Onkyo TX-SR333
      Analog Tuner FM/AM FM/AM with RDS
      Presets4040
      Digital Radio
      Internet Radio TuneIn
      Pandora
      Spotify
      Tidal
      Deezer
      Napster
      SiriusXM
      CONSTRUCTION Onkyo TX-NR737 Onkyo TX-SR333
      Solid Aluminum Front
      Speaker Terminals95
      Large Speaker Terminals90
      Color-Coded Speaker Terminals
      Transparent High-Grade Speaker Terminals
      Gold plated RCA terminals
      POWER Onkyo TX-NR737 Onkyo TX-SR333
      Power SupplyAC 120 V, 60 HzAC 220-240 V, 50/60 Hz
      Independent Power Supply22
      H.C.P.S. (High Current Power Supply) Massive High Power Transformer Massive High Power Transformer
      Toroidal Transformer
      Power Consumption6.9 A360 W
      No Sound Power85 W55 W
      Standby Power0.1 W0.3 W
      Capacitor Bank10,000 µF
      ECO Mode / Hybrid Standby Function
      PHYSICAL Onkyo TX-NR737 Onkyo TX-SR333
      Dimensions (W x H x D)435 mm x 175 mm x 379 mm
      17-1/8" x 6-7/8" x 14-15/16"      		435 mm x 150 mm x 321 mm
      17-1/8" x 5-7/8" x 12-5/8"
      Weight11.5 kg (25.4 lbs)8.1 kg (17.9 lbs)
      SPECIFICATIONS Onkyo TX-NR737 Onkyo TX-SR333
      Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)110 W (0.08% THD)65 W (0.7% THD)
      Power Output (6 Ω, 1 kHz, 2 channel driven, FTC)125 W (0.7% THD)90 W (0.7% THD)
      Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)185 W120 W
      Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)170 W (1% THD)100 W (1% THD)
      Dynamic Power per Channel (3 Ω, Front)250 W160 W
      Dynamic Power per Channel (4 Ω, Front)220 W125 W
      Dynamic Power per Channel (8 Ω, Front)130 W85 W
      THD0.08% (20 Hz - 20 kHz, Half power)0.7% (20 Hz - 20 kHz, Half power)
      Damping Factor60 (Front, 1 kHz, 8 Ω)60 (Front, 1 kHz, 8 Ω)
      Input Sensitivity and Impedance (Line)200 mV/47 kΩ (Line)200 mV/47 kΩ (Line)
      Input Sensitivity and Impedance (Phono MM)2.5 mV/47 kΩ
      Rated Preout Level and Impedance200 mV/470 Ω
      Rated Lineout Level and Impedance100 mV/2.2 kΩ
      Maximum Lineout Level and Impedance2 V/2.2 kΩ1.0 V/2.2 kΩ
      Phono Overload70 mV (MM, 1kHz, 0.5% Direct)
      S/N Ratio (Line, IHF-A)106 dB100 dB
      S/N Ratio (Phono MM, IHF-A)80 dB
      Frequency Response (Analog In)5 Hz - 100 kHz/+1 dB, -3 dB (Direct Mode)5 Hz - 100 kHz/+1 dB, -3 dB (Direct Mode)
      DSD Sampling Rates via HDMI2.8 MHz, 5.6 MHz2.8 MHz
      DSD Sampling Rates via USB2.8 MHz2.8 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)      		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 Response5 Hz - 100 MHz/+0 dB, -3 dB (Component)5 Hz - 100 MHz/+0 dB, -3 dB (Component)
      Ethernet Standard10BASE-T/100BASE-TX
      Wi-Fi StandardIEEE 802.11 b/g/n
      Wi-Fi Terminal Frequency2.4 GHz
      Bluetooth Version2․1 + EDR2․1 + EDR
      Bluetooth Frequency2.4 GHz2.4 GHz
      FM Frequency87.5 MHz - 107.9 MHz87.5 MHz - 108.0 MHz
      AM Frequency522/530 kHz - 1611/1710 kHz522/530 kHz - 1611/1710 kHz
      Warranty2 Years2 Years

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

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