Arcam AVR21 vs Onkyo TX-SR333

      Arcam AVR21

      Onkyo TX-SR333
      92
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      67
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      All
      USA
      Taiwan
      Europe, Australia and Asia Others
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      Highlights

      • 7.2 Channels
      • 15.2 Channel Processing
      • 110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      • HDMI 2.1
      • Dolby Atmos, DTS:X, Auro 3D
      • HDR10, HDR10+, Dolby Vision
      • 8K Passthrough
      • Wi-Fi, Bluetooth, Ethernet

      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 Arcam AVR21
      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 Arcam AVR21 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 Arcam AVR21 has 7 channel and the Onkyo TX-SR333 has 5 channel amplifiers with Arcam AVR21's being more powerful.


      Arcam AVR21 Onkyo TX-SR333

      Arcam AVR21 was introduced in 2022. It is equipped with 7 channel amplifier with 110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) power per channel and is capable of 15.2 maximum channel processing. It supports Dolby Atmos, DTS:X and Auro-3D, passes 8K/60Hz and 4K/120Hz 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 Arcam AVR21 and Onkyo TX-SR333 and gave them scores of 92 and 67 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.

      Arcam AVR21

      Onkyo TX-SR333

      Amplifier
      91
      Amplifier
      71
      Audio Features
      94
      Audio Features
      68
      Video Features
      99
      Video Features
      66
      Connectivity
      90
      Connectivity
      66
      Zones
      85
      Zones
      64
      Radio
      86
      Radio
      59
      OVERALL
      92
      OVERALL
      67

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

      2. Pros and Cons

      In this section we present pros and cons of Arcam AVR21 and Onkyo TX-SR333.

      PROS

      Arcam AVR21

      Onkyo TX-SR333

      •   High Power Output - 110 W
      •   Front Wide Channel Support
      •   15.2 Channel Processing
      •   Dolby Atmos
      •   Dolby Atmos Height Virtualization
      •   DTS:X
      •   IMAX Enhanced
      •   Auro 3D with Auro-Matic Upmixer
      •   MQA Decoding
      •   DSD via HDMI
      •   Auto Speaker Calibration System with Mic.
      •   HDR10
      •   HDR10+
      •   Dolby Vision
      •   HDMI 2.1
      •   eARC
      •   New HDCP Version
      •   Auto Low Latency Mode Pass-through
      •   VRR
      •   8K Passthrough
      •   Wi-Fi
      •   Bluetooth
      •   Google Assistant
      •   Chromecast Built-In
      •   7 HDMI Inputs
      •   4 HDMI Outputs
      •   7 8K Inputs
      •   USB Input
      •   Many RCA Line Inputs
      •   RCA Pre-Outs
      •   Ethernet
      •   Analog Tuner
      •   Digital Radio
      •   Pandora
      •   Spotify
      •   Tidal
      •   Toroidal Transformer
      •   Bluetooth 5․0
      •   DSD via HDMI
      •   Bluetooth
      •   USB Input
      •   Many RCA Line Inputs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Analog Tuner
      •   Independent Power Supply

      CONS

      Arcam AVR21

      Onkyo TX-SR333

      •   Does not Work with Amazon Alexa
      •   No Phono Input
      •   No Composite Video Inputs
      •   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

      Arcam AVR21

      Onkyo TX-SR333

      •   7.2 Channels
      •   2 Zones
      •   6 HDMI Inputs
      •   2 Zones

      3. Advantage of Arcam AVR21

      This section shows those features and specifications which are the reason to choose Arcam AVR21 over Onkyo TX-SR333.

      Check the Price

      Arcam AVR21
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      Arcam AVR21 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)
      Certified 4 Ω Performance vs
      Bi-amp capability vs
      More Channel Processing 15.2 vs 5.1
      Dolby Atmos up to 9.1.6 with external amp vs
      Dolby Atmos Height Virtualization vs
      Dolby Surround Upmixer vs
      DTS:X Pro up to 9.1.6 with external amp vs
      DTS Neural:X vs
      DTS Virtual:X vs
      DTS-ES Discrete 6.1, Matrix 6.1 vs
      IMAX Enhanced vs
      Auro 3D with Auro-Matic Upmixer 13.1-ch (Built-In) vs
      DTS Dialog Control vs
      Dialog Normalization vs
      Independent Subwoofer Outputs vs
      More Advanced Auto Speaker Calibration System Dirac Live™ vs
      HDR10 vs
      HDR10+ vs
      BT.2020 color space vs
      Dolby Vision vs
      HLG vs
      Enhanced Audio Return Channel (eARC) vs
      Auto Low Latency Mode Pass-through vs
      VRR vs
      Video Signal Passthrough up to 8K 50/60Hz and 4K 100/120Hz 4:4:4 vs up to 4K/60p (YCbCr 4:2:0)
      Wi-Fi vs
      Chromecast Built-In vs
      AirPlay AirPlay 2 vs AirPlay via optional Onkyo RI Dock DS-A5 (sold separately)
      Remote Controll App Arcam control app vs
      More HDMI Inputs 7 vs 6
      More HDMI Outputs 3 (2 x 8K for MAIN, 1 x 4K for ZONE2) vs 1
      More 8K Inputs 7 vs
      More Optical Inputs 2 vs 1
      More Optical Outputs 1 vs
      More Coaxial Inputs/Outputs 4 vs 2
      More RCA Pre-Outs 15.2 vs 0.1
      Ethernet vs
      More Powered Zones 2 vs
      Zone 2 Outs HDMI, Pre Out vs RCA Line Out
      RS-232C Interface vs
      +12V Trigger Output 2 vs 0
      Remote (IR) Input/Output 2 / 0 vs 0 / 0
      More Presets 50 vs 40
      Digital Radio DAB/DAB+ vs
      Internet Radio TuneIn vs
      Pandora vs
      Spotify vs
      Tidal vs
      More Speaker Terminals 7 vs 5
      More Large Speaker Terminals 7 vs 0
      Universal Power Supply AC 110-120 V or 220-240 V, 50/60 Hz via switch vs AC 120 V, 60 Hz
      Toroidal Transformer vs
      Higher Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC) 110 W (0.02% THD) vs 65 W (0.7% THD)
      Higher S/N Ratio (Line, IHF-A) 93 dB (normal)
      110 dB (stereo direct)      		 vs 100 dB
      Newer Bluetooth Version 5․0 vs 2․1 + EDR
      Longer Warranty 5 Years vs 2 Years
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      11.2 channel

      140 W

      4. Advantage of Onkyo TX-SR333

      This section shows those features and specifications which are the reason to choose Onkyo TX-SR333 over Arcam AVR21.

      Check the Price

      Onkyo TX-SR333
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      Arcam AVR21 vs Onkyo TX-SR333
      Dolby Pro Logic vs PLII
      DTS Neo vs Neo:6
      Music Playback via USB vs FLAC, WAV, Apple Lossless, mp3, Ogg, DSD
      DSD via USB vs 2-ch Input
      More Composite Video Inputs vs 4 (1 front)
      More Composite Video Outputs vs 1
      More Component Video Inputs vs 1
      More Component Video Outputs vs 1
      Front A/V Inputs AUX (3.5 mm Audio) vs Composite Video, RCA audio
      Analog Tuner FM with RDS vs FM/AM

      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 Arcam AVR21 Onkyo TX-SR333
        DSD via HDMI 2-ch/Multi-ch Input 2-ch/Multi-ch Input
        Bluetooth aptX HD
        USB Input for factory service1 (Rear)
        Many RCA Line Inputs7 (1 front)7 (1 front)
        Analog Tuner FM with RDS FM/AM
      WEAKNESSES Arcam AVR21 Onkyo TX-SR333
        Does not Work with Amazon Alexa
        No Phono Input

      6. Amplifier

      Arcam AVR21 Onkyo TX-SR333

      7 channel Class A/B Amplifier: Arcam AVR21 features 7 channel power amplifier with Class A/B design. 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-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.
      • Toroidal Transformer: Arcam AVR21 has a toroidal transformer which in general costs several times more than a regular C-core transformer and radiates less electromagnetic noise outside its donut shaped core.


      AMPLIFIER Arcam AVR21 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)
      THX™ Certification
      Continuous 6 Ω Rated
      Certified 4 Ω Performance
      Bi-amp Capability

      Check the Price

      Arcam AVR21
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      7. Speaker Configurations

      Arcam AVR21'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:
      • Arcam AVR21: 5.2.2 with internal amplifier and 5.2.4, 7.2.2 with addition of external 2 channel amplifier and 5.2.6, 7.2.4, 9.2.2 with addition of external 4 channel amplifier and 7.2.6, 9.2.4 with addition of external 6 channel amplifier and 9.2.6 with addition of external 8 channel amplifier.
      • Onkyo TX-SR333: Not supported.
      • DTS:X Configurations: The following speaker configurations are supported for DTS:X:
      • Arcam AVR21: This model supports DTS:X but not DTS:X Pro. Since DTS:X is limited with 11 channel processing some of the speaker configurations for Dolby Atmos are not supported here. The supported configurations are 5.2.2 with internal amplifier and 5.2.4, 7.2.2 with addition of external 2 channel amplifier and 5.2.6, 7.2.4, 9.2.2 with addition of external 4 channel amplifier.
      • Onkyo TX-SR333: Not supported.
      • Configurations without height channels: There are also other speaker configurations available which do not include height channels:
      • Arcam AVR21: 5.2, 7.2 with internal amplifier and 9.2 with addition of external 2 channel amplifier.
      • Onkyo TX-SR333: 5.1 with internal amplifier.
      • Front Wide Channel support: With the presence of two front wide speakers you can enhance the front surround stage. The following speaker configurations are available for front wide channels:
      • Arcam AVR21: 9.2, 9.2.2, 9.2.4, 9.2.6.
      • Onkyo TX-SR333: Does not support.
      • Bi-Amp: Arcam AVR21 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

      Arcam AVR21 supports Dolby Atmos.

      • Dolby Surround Upmixer: Arcam AVR21 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.
      • Dolby Atmos Height Virtualization: Arcam AVR21 supports Dolby Atmos Height Virtualization which is a digital signal processing solution that leverages Dolby's deep understanding of human audio perception to create the sensation of overhead sound from the listener-level speakers.

      DTS:X

      Arcam AVR21 supports DTS:X.

      • DTS Neural:X: Arcam AVR21 supports DTS Neural:X which is an advanced 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.
      • DTS Virtual:X: Arcam AVR21 supports DTS Virtual:X which bridges the gap between DTS:X codec and the reality of so many consumers' homes, allowing you to enjoy multi-dimensional sound regardless of room size, layout, or speaker configuration. If you have a limited speaker setup you will miss a full immersive potential of your entertainment system. DTS Virtual:X adds height and surround audio effect to your system without adding height speakers. It works with multiple configurations and delivers immersive sound experience out of 5.1 or even 2.1 speaker layouts.
      • DTS Dialog Control: Arcam AVR21 supports DTS Dialog Control. This function adjusts the dialog levels during playback of the DTS:X stream. It allows you to separately increase the dialog levels in contrast with the background sound and hear dialog easily even under noisy circumstances.

      Auro-3D

      Arcam AVR21 supports Auro-3D.

      • Auro-Matic upmixer: Auro-Matic upmixer takes non Auro-3D sound and upmixes to the current speaker configuration.

      IMAX Enhanced

      Arcam AVR21 is IMAX Enhanced certified. To qualify for IMAX Enhanced certification, 4K HDR televisions, projectors, sound bars, a/v receivers, loudspeakers, powered subwoofers and other premium home entertainment devices must meet carefully prescribed performance requirements established by IMAX, DTS and Hollywood's leading experts.

      • What makes an IMAX Enhanced A/V receiver different from an A/V receiver with DTS:X technology? DTS:X technology is commonly found in most multi-channel A/V receivers on the market today. All IMAX Enhanced A/V receivers include DTS:X technology and deliver additional features, such as auto-sensing of IMAX Enhanced content, via IMAX Mode. IMAX Mode indicates that your A/V receiver supports fully immersive IMAX signature sound.
      AUDIO DECODING Arcam AVR21 Onkyo TX-SR333
      Dolby Atmos up to 9.1.6 with external amp
      Dolby Atmos Height Virtualization
      Dolby Atmos Music
      Dolby TrueHD
      Dolby Digital Plus
      Dolby Surround Upmixer
      Dolby Pro Logic PLII
      Dolby Digital EX
      DTS:X Pro up to 9.1.6 with external amp
      DTS Neural:X
      DTS Virtual:X
      DTS Neo Neo:6
      DTS-HD Master Audio
      DTS-HD High Resolution Audio
      DTS 96/24
      DTS-ES Discrete 6.1, Matrix 6.1
      IMAX Enhanced
      Auro 3D with Auro-Matic Upmixer 13.1-ch (Built-In)

      Check the Price

      Onkyo TX-SR333
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      9. HDMI

      Arcam AVR21 comes with 7 HDMI 2.1 inputs with 8K support. It has 3 outputs - 2 x 8K for MAIN and 1 x 4K for ZONE2.

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

      • 8K/60Hz and 4K/120Hz Passthrough on Arcam AVR21: All inputs pass up to 8K 50/60Hz and 4K 100/120Hz 4:4:4 video signal.
        4K/60Hz Passthrough on Onkyo TX-SR333: All inputs pass up to 4K/60p (YCbCr 4:2:0) video signal.
      • BT.2020 Color Space: BT.2020 or Rec. 2020 is a color standard which delivers a wider color gamut compared to Rec. 709. It covers approximately 75% of the total visual spectrum while the Rec. 709 covers only 35% (available on Arcam AVR21 only).
      • HDCP 2.3 Copy Protection: Arcam AVR21 is HDCP 2.3 compliant which is a requirement for 4K/HDR copy-protected content transmission.
      • 3D Ready: Both receivers are able to pass 3D video through HDMI.

      HDR (High Dynamic Range)

      Arcam AVR21 supports HDR10, HDR10+, Dolby Vision and Hybrid Log-Gamma.

      Onkyo TX-SR333 does not support HDR. High dynamic range video has greater dynamic range than standard dynamic range (SDR) video with brighter whites and deeper blacks. The result is greater contrast and more details in dark and bright areas, better color and depth.


      Enhanced Audio Return Channel (eARC)

      Arcam AVR21 supports Audio Return Channel (ARC) which allows the compatible TV to send audio signal to the a/v receiver through the same HDMI cable which is used to send audio and video signals to the TV. So one HDMI cable is used to transfer audio signal in both directions. New Enhanced ARC will support uncompressed audio formats such as Dolby Atmos, DTS:X, Dolby TrueHD and DTS HD Master Audio whereas the previous ARC could support only Dolby Digital, Dolby Digital Plus, DTS, DTS HD, and PCM.


      Gaming Features

      Arcam AVR21 supports Auto Low Latency Mode (ALLM) and Variable Refresh Rate (VRR) for lag-free and smooth gaming.



      VIDEO FEATURES Arcam AVR21 Onkyo TX-SR333
      HDR10
      HDR10+
      Dynamic HDR
      BT.2020 color space
      Dolby Vision
      HLG (Hybrid Log Gamma)
      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 8K 50/60Hz and 4K 100/120Hz 4:4:4up to 4K/60p (YCbCr 4:2:0)

      Check the Price

      Arcam AVR21
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      10. Inputs and Outputs

      Audio

      • Analog Pre-Outs: Arcam AVR21 has 15.2 preamplifier outputs which allows you to connect the receiver to the external power amplifier. You may want to use a high quality external amplifier for certain channels, usually for front L/R and center, and use the receiver to power the rest. Also, Arcam AVR21 has 15 channel processing but has only 7 channel amplifier, so it needs external amplifier connected to the analog pre-outs in order to reach its maximum speaker configuration.
      • Analog Line Inputs and Outputs: There are 7 pair of line inputs on both receivers for connecting sources with analog outputs. There are also 1 pair of line outputs on the receivers.
      • Digital Inputs and Outputs: 2 optical inputs, 1 optical output and 4 coaxial inputs are available on Arcam AVR21 and 1 optical input and 2 coaxial inputs are available on Onkyo TX-SR333 for digital audio connections.
      • Headphone Output: There is a 3.5 mm (1/8") headphone output jack on the front panel of each receiver.

      Video

      • HDMI:
      • Arcam AVR21
        Inputs:         7   Outputs: 3 (2 x 8K for MAIN, 1 x 4K for ZONE2)
        8K Inputs: 7.
      • 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.
      • Arcam AVR21
        Inputs:         0   Outputs: 0.
      • 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. resolution on Component video connectors. resolution on Component video connectors.
      • Arcam AVR21
        Inputs:         0   Outputs: 0.
      • Onkyo TX-SR333
        Inputs:         1   Outputs: 1.

      Front A/V Inputs

      • Arcam AVR21: AUX (3.5 mm Audio)
      • Onkyo TX-SR333: Composite Video, RCA audio

      Arcam AVR21

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      Onkyo TX-SR333

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      TERMINALS Arcam AVR21 Onkyo TX-SR333
      HDMI Inputs76
      HDMI Outputs3 (2 x 8K for MAIN, 1 x 4K for ZONE2)1
      8K Inputs7
      USB Input for factory service1 (Rear)
      USB DC Out Port
      Optical Inputs21
      Optical Outputs1
      Coaxial Inputs42
      RCA Line Inputs7 (1 front)7 (1 front)
      RCA Line Outputs11
      XLR Line Inputs
      Phono Input
      Multi-Channel Input
      RCA Pre-Outs15.20.1
      XLR Pre-outs
      Composite Video Inputs4 (1 front)
      Composite Video Outputs1
      S-Video Inputs
      S-Video Outputs
      Component Video Inputs1
      Component Video Outputs1

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      Onkyo TX-SR333
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      11. Evaluations

      We evaluated Arcam AVR21 and Onkyo TX-SR333 and gave them scores of 92 and 67 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.


      Arcam AVR21

      Onkyo TX-SR333

      OVERALL
      92
      OVERALL
      67

      Amplifier

      EXCELLENT
      91
      •   7.2 Channels
      •   High Power Output - 110 W
      •   Toroidal Transformer
      GOOD
      71
      •   Few Channels - 5.1
      •   Low Power Output - 65 W
      •   Independent Power Supply

      Audio Features

      EXCELLENT
      94
      •   7.2 Channels
      •   Front Wide Channel Support
      •   15.2 Channel Processing
      •   Dolby Atmos
      •   Dolby Atmos Height Virtualization
      •   DTS:X
      •   IMAX Enhanced
      •   Auro 3D with Auro-Matic Upmixer
      •   MQA Decoding
      •   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

      EXCELLENT
      99
      •   HDR10
      •   HDR10+
      •   Dolby Vision
      •   HDMI 2.1
      •   Auto Low Latency Mode Pass-through
      •   VRR
      •   8K Passthrough
      AVERAGE
      66
      •   No HDR10
      •   No HDR10+
      •   No Dolby Vision
      •   No 8K Passthrough

      Connectivity

      EXCELLENT
      90
      •   eARC
      •   New HDCP Version
      •   Wi-Fi
      •   Bluetooth
      •   Does not Work with Amazon Alexa
      •   Google Assistant
      •   Chromecast Built-In
      •   7 HDMI Inputs
      •   4 HDMI Outputs
      •   7 8K Inputs
      •   USB Input
      •   Many RCA Line Inputs
      •   No Phono Input
      •   RCA Pre-Outs
      •   No Composite Video Inputs
      •   Ethernet
      •   Bluetooth 5․0
      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

      EXCELLENT
      85
      •   2 Zones
      AVERAGE
      64
      •   2 Zones

      Radio

      EXCELLENT
      86
      •   Analog Tuner
      •   Pandora
      •   Spotify
      •   Tidal
      AVERAGE
      59
      •   Analog Tuner
      •   No Pandora
      •   No Spotify
      •   No Tidal

      12. Specifications

      GENERAL Arcam AVR21 Onkyo TX-SR333
      BrandArcamOnkyo
      SeriesHDA
      ModelAVR21TX-SR333
      TypeA/V ReceiverA/V Receiver
      CountryAllTaiwan
      Release Year20222014
      PredecessorArcam AVR20 Onkyo TX-SR313
      SuccessorOnkyo TX-SR343
      AMPLIFIER Arcam AVR21 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
      Amplifier DesignClass A/B
      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 FEATURES Arcam AVR21 Onkyo TX-SR333
      Digital Signal Processing (DSP) Engine32-bit DSP
      DACDual ESS 9026PROBurr-Brown
      DAC Specs192 kHz/24 Bit192 kHz/24 Bit
      Maximum Channel Processing15.25.1
      Air Studios Monitor Certification
      Dolby Atmos up to 9.1.6 with external amp
      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 Pro up to 9.1.6 with external amp
      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 Discrete 6.1, Matrix 6.1
      IMAX Enhanced
      Auro 3D with Auro-Matic Upmixer 13.1-ch (Built-In)
      MQA Decoding
      PCM 2-ch/Multi-ch Input 2-ch/Multi-ch Input
      Network Audio FormatsMP3, WMA, AAC, WAV, FLAC, AIFF, ALAC, MQA
      Music Playback via USBFLAC, WAV, Apple Lossless, mp3, Ogg, DSD
      High Resolution Music Playback via USB and/or Network up to 192 kHz up to 192 kHz
      High Resolution Audio Formats via USBFLAC, 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
      DSD to PCM Converter
      USB DAC
      Jitter Reduction 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
      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 Stereo Direct, CD Direct
      Pure Audio Mode
      Pure Direct Analog Path Mode
      Virtual Speakers T-D (Theater-Dimensional)
      Independent Subwoofer Outputs
      CALIBRATION Arcam AVR21 Onkyo TX-SR333
      Auto Speaker Calibration System with Mic. Dirac Live™
      VIDEO FEATURES Arcam AVR21 Onkyo TX-SR333
      HDR10
      HDR10+
      Dynamic HDR
      BT.2020 color space
      Dolby Vision
      HLG (Hybrid Log Gamma)
      HDMI Version2.1
      HDBaseT Compatible
      Enhanced Audio Return Channel (eARC)
      HDCP Version2.3
      QMS (Quick Media Switching)
      ALLM (Auto Low Latency Mode)
      VRR (Variable Refresh Rate)
      QFT (Quick Frame transport)
      DSC (Display Stream Compression)
      3-D Ready
      Video Signal Passthroughup to 8K 50/60Hz and 4K 100/120Hz 4:4:4up 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 Arcam AVR21 Onkyo TX-SR333
      Wi-Fi
      Bluetooth aptX HD
      Works with Amazon Alexa
      Google Assistant
      Chromecast Built-In
      Apple Siri
      Works with SonoS
      DTS Play-Fi
      MHL Input
      DLNA 1.5
      AirPlay AirPlay 2 AirPlay via optional Onkyo RI Dock DS-A5 (sold separately)
      Apple Product Connection iPod, iPhone and iPad iPod and iPhone via optional Onkyo RI Dock DS-A5 (sold separately)
      Remote App Arcam control app
      InstaPrevue Input Source Prevue
      TERMINALS Arcam AVR21 Onkyo TX-SR333
      HDMI Inputs76
      HDMI Outputs3 (2 x 8K for MAIN, 1 x 4K for ZONE2)1
      8K Inputs7
      USB Input for factory service1 (Rear)
      USB DC Out Port
      Optical Inputs21
      Optical Outputs1
      Coaxial Inputs42
      RCA Line Inputs7 (1 front)7 (1 front)
      RCA Line Outputs11
      XLR Line Inputs
      Phono Input
      Multi-Channel Input
      RCA Pre-Outs15.20.1
      XLR Pre-outs
      Composite Video Inputs4 (1 front)
      Composite Video Outputs1
      S-Video Inputs
      S-Video Outputs
      Component Video Inputs1
      Component Video Outputs1
      Ethernet
      Ethernet Switch
      PC In
      Front A/V InputsAUX (3.5 mm Audio)Composite Video, RCA audio
      Speaker A/B
      Headphone Out3.5 mm (1/8")6.3 mm (1/4")
      Detachable Power Cord
      uport
      ZONES Arcam AVR21 Onkyo TX-SR333
      Number of Zones22
      Powered Zones 2
      Zone 2 OutsHDMI, Pre OutRCA Line Out
      Whole House Mode
      RS-232C Interface
      +12V Trigger Output20
      Remote (IR) Input/Output2 / 00 / 0
      MISCELLANEOUS Arcam AVR21 Onkyo TX-SR333
      On-Screen Display
      IP Control
      PreAmp Mode
      DisplayLarge front-panel LCD display
      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 Arcam AVR21 Onkyo TX-SR333
      Analog Tuner FM with RDS FM/AM
      Presets5040
      Digital Radio DAB/DAB+
      Internet Radio TuneIn
      Pandora
      Spotify
      Tidal
      Deezer
      Napster
      SiriusXM
      CONSTRUCTION Arcam AVR21 Onkyo TX-SR333
      Solid Aluminum Front
      Speaker Terminals75
      Large Speaker Terminals70
      Color-Coded Speaker Terminals
      Transparent High-Grade Speaker Terminals
      Gold plated RCA terminals
      POWER Arcam AVR21 Onkyo TX-SR333
      Power SupplyAC 110-120 V or 220-240 V, 50/60 Hz via switchAC 120 V, 60 Hz
      Independent Power Supply2
      H.C.P.S. (High Current Power Supply) Massive High Power Transformer
      Toroidal Transformer
      Power Consumption1500 W3.2 A
      No Sound Power55 W
      Standby Power0.5 W0.2 W
      ECO Mode / Hybrid Standby Function
      PHYSICAL Arcam AVR21 Onkyo TX-SR333
      Dimensions (W x H x D)433 mm x 171 mm x 425 mm
      17.06" x 6.69" x 18.56"      		435 mm x 150 mm x 321 mm
      17-1/8" x 5-7/8" x 12-5/8"
      Weight16.6 kg (36.4 lbs)7.6 kg (16.8 lbs)
      Weight of Package19.9 kg
      SPECIFICATIONS Arcam AVR21 Onkyo TX-SR333
      Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)110 W (0.02% THD)65 W (0.7% THD)
      Power Output (8 Ω, 1 kHz, 2 channel Driven, FTC)125 W (0.2% THD)
      Power Output (6 Ω, 1 kHz, 2 channel driven, FTC)90 W (0.7% THD)
      Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)120 W
      Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)100 W (1% THD)
      Power Output (4 Ω, 20 Hz - 20 kHz, 2 channel Driven)175 W (0.2% THD)
      Power Output (4 Ω, 1 kHz, 2 channel Driven)190 W (0.2% THD)
      Multi Channel Simultaneous Drive90 W (7 channels driven, 1kHz, 8 Ω, 0.2% THD)
      110 W (7 channels driven, 1kHz, 4 Ω, 0.2% 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
      THD0.7% (20 Hz - 20 kHz, Half power)
      Damping Factor60 (Front, 1 kHz, 8 Ω)
      Input Sensitivity and Impedance (Line)1V, 2V, 4V (user adjustable)/47 kΩ200 mV/47 kΩ (Line)
      Maximum Input Sensitivity (Line)4.5 Vrms
      Rated Preout Level and Impedance1 Vrms/560 Ω
      Rated Lineout Level and Impedance100 mV/2.2 kΩ
      Maximum Preout Level and Impedance5 Vrms/560 Ω
      Maximum Lineout Level and Impedance1.0 V/2.2 kΩ
      Rated Headphone Jack Output Level and Impedance5 Vrms/100 Ω
      S/N Ratio (Line, IHF-A)93 dB (normal)
      110 dB (stereo direct)      		100 dB
      Frequency Response (Analog In)±0.2 dB (20 Hz to 20 kHz)5 Hz - 100 kHz/+1 dB, -3 dB (Direct Mode)
      Residual noise (IHF-A Network)0.15 mV
      DSD Sampling Rates via HDMI2.8 MHz2.8 MHz
      DSD Sampling Rates via USB2.8 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 Response5 Hz - 100 MHz/+0 dB, -3 dB (Component)
      Ethernet Standard
      Wi-Fi StandardIEEE 802.11 ac
      Wi-Fi Terminal Frequency5 GHz, 2.4 GHz
      Bluetooth Version5․02․1 + EDR
      Bluetooth Frequency2.4 GHz
      FM Frequency87.5 MHz - 107.9 MHz
      AM Frequency522/530 kHz - 1611/1710 kHz
      Warranty5 Years2 Years

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

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