1-on-1 Comparison

Side-by-Side Comparison

Anthem MRX 740 8K

Onkyo TX-SR309



  • 7.2 channels
  • 11.1 channel processing
  • 140 W (8 Ω, 1 kHz, 2 channel driven)
  • HDMI 2.1
  • Dolby Atmos, DTS:X capable
  • HDR10, HDR10+, Dolby Vision, 8K Passthrough
  • AirPlay 2, Chromecast
  • Ethernet, Wi-Fi, Bluetooth
  • USB and Phono inputs


  • 5.1 channels
  • 5.1 channel processing
  • 65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
  • 1080p Passthrough
  • USB input

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Here we are comparing Anthem MRX 740 8K to Onkyo TX-SR309 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 Anthem MRX 740 8K has 7 channel and the Onkyo TX-SR309 has 5 channel amplifiers with Anthem MRX 740 8K's being more powerful.

Anthem MRX 740 8K Onkyo TX-SR309

Anthem MRX 740 8K was introduced in 2021. It is equipped with 7 channel amplifier with 140 W (8 Ω, 1 kHz, 2 channel driven) power per channel and is capable of 11.1 maximum channel processing. It supports Dolby Atmos and DTS:X, passes 8K/60Hz and 4K/120Hz video signal.

Onkyo TX-SR309 was introduced in 2011. 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 1080/60p video signal.

We evaluated the a/v receiver and gave 88 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.

We evaluated the a/v receiver and gave 60 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.


Advantage of Anthem MRX 740 8K

This section shows those features and specifications which are the reason to choose Anthem MRX 740 8K over Onkyo TX-SR309.

Anthem MRX 740 8K has more channels, more power per channel, higher DAC specs, more channel processing, room correction system, more zones, bigger power supply and higher signal to noise ratio. It supports Dolby Atmos, DTS:X, IMAX Enhanced and Spotify. It has DTS Dialog Control, analog pre-outs and XLR inputs. In video department only Anthem MRX 740 8K supports HDR10, Dolby Vision and Hybrid Log Gamma.

Anthem MRX 740 8K vs Onkyo TX-SR309
More Channels 7.2 vs 5.1
Certified 4 Ω Performance vs
Bi-amp capability vs
Higher DAC Specs 768 kHz/32 Bit vs 192 kHz/24 Bit
More Channel Processing 11.1 vs 5.1
Dolby Atmos vs
Dolby Surround Upmixer vs
DTS:X vs
DTS Neural:X vs
DTS Virtual:X vs
IMAX Enhanced vs
DTS Dialog Control vs
More Advanced Auto Speaker Calibration System Anthem Room Correction (ARC Genesis) vs
Enhanced Audio Return Channel (eARC) vs
HDR10 vs
HDR10+ vs
Dolby Vision vs
HLG vs
BT.2020 color space vs
Auto Low Latency Mode Pass-through vs
VRR vs
QFT vs
Video Signal Passthrough up to 8K 50/60Hz and 4K 100/120Hz 4:4:4 vs up to 1080p
Chromecast Built-In vs
AirPlay AirPlay 2 vs
Remote Controll App Anthem Remote App vs
Ethernet vs
Wi-Fi vs
Bluetooth vs
More HDMI Inputs 7 vs 3
More HDMI Outputs 3 (2 for MAIN, 1 for ZONE2) vs 1
More 8K Inputs 7 vs
XLR Line Inputs vs
More Optical Inputs 3 vs 2
More Optical Outputs 1 vs
More Coaxial Inputs/Outputs 2 vs 1
More RCA Pre-Outs 11.2 vs 0.1
More Zones 2 vs 1
RS-232C Interface vs
+12V Trigger Output 3 vs
Remote (IR) Input/Output 1 / 0 vs
Detachable Power Cord vs
Spotify vs
More Large Speaker Terminals 7 vs 0
Bigger Power Supply 485 W vs 3.3 A
Higher Power Output (6 Ω, 1 kHz, 2 channel driven, FTC) 170 W (1% THD) on Channels 1-5, 75 W (1% THD) on Remaining Channels vs 90 W (0.9% THD)
Higher S/N Ratio (Line, IHF-A) 110 dB vs 100 dB

Advantage of Onkyo TX-SR309

This section shows those features and specifications which are the reason to choose Onkyo TX-SR309 over Anthem MRX 740 8K.

Only Onkyo TX-SR309 supports DSD streaming via HDMI.

Anthem MRX 740 8K vs Onkyo TX-SR309
Dolby Pro Logic vs PLII
DTS Neo vs Neo:6
DSD via HDMI vs 2-ch/Multi-ch Input
USB Input for factory service vs 1 Front
More RCA Line Inputs 4 vs 6 (1 front)
More Composite Video Inputs vs 5 (1 front)
More Composite Video Outputs vs 2
More Component Video Inputs vs 2
More Component Video Outputs vs 1
Front A/V Inputs vs USB, Composite Video, RCA Audio

Common Strengths and Weaknesses

Here we list common strengths and weaknesses of both receivers.

  Analog Tuner
  No Dolby Atmos Height Virtualization
  No Auro 3D with Auro-Matic Upmixer
  Does not Work with Amazon Alexa
  No Pandora
  No Tidal

Audio Section


Anthem MRX 740 8K Onkyo TX-SR309

7 channel Class A/B Amplifier: Anthem MRX 740 8K features 7 channel power amplifier with Class A/B design on Channels 1-5 and Class D design on the rest. It is rated at 140 W (8 Ω, 1 kHz, 2 channel driven) and is able to drive 4 ohm speakers.

5 channel Amplifier: Onkyo TX-SR309 features 5 channel power amplifier. It is rated at 65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven).

    Speaker Configurations

    Anthem MRX 740 8K's and Onkyo TX-SR309's amplifiers can be assigned for different speaker configurations.

    • Dolby Atmos Configurations: The following speaker configurations are supported for Dolby Atmos:
    • Anthem MRX 740 8K: 5.2.2 with internal amplifier and 5.2.4, 7.2.2 with addition of external 2 channel amplifier and 7.2.4 with addition of external 4 channel amplifier.
    • Onkyo TX-SR309: Not supported.
    • DTS:X Configurations: The following speaker configurations are supported for DTS:X:
    • Anthem MRX 740 8K: The speaker configurations for DTS:X are the same as for Dolby Atmos - 5.2.2 with internal amplifier and 5.2.4, 7.2.2 with addition of external 2 channel amplifier and 7.2.4 with addition of external 4 channel amplifier.
    • Onkyo TX-SR309: Not supported.
    • Configurations without height channels: There are also other speaker configurations available which do not include height channels:
    • Anthem MRX 740 8K: 5.2, 7.2 with internal amplifier.
    • Onkyo TX-SR309: 5.1 with internal amplifier.
    • Bi-Amp: Anthem MRX 740 8K 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.

    • Dolby Atmos

      Anthem MRX 740 8K supports Dolby Atmos. It is a cinematic audio format in which sounds exist as individual entities, called audio objects. In Dolby Atmos, any sound 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. 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.

      • Dolby Surround Upmixer: Anthem MRX 740 8K 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.


      Anthem MRX 740 8K supports DTS:X. 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: Anthem MRX 740 8K 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: Anthem MRX 740 8K 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: Anthem MRX 740 8K 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.

      Enhanced Audio Return Channel (eARC)

      Anthem MRX 740 8K supports Audio Return Channel (ARC) feature 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.

      Sound Processing

      • Compressed Music Enhancer: Onkyo TX-SR309 features Compressed Music Enhancer which enhances the quality of the music files with lossy compression.
      • Advanced Music Optimizer: Compressed music enhancement in Onkyo TX-SR309 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 Calibration

      Anthem MRX 740 8K comes with Anthem Room Correction (ARC Genesis) room correction system.

      Video Section

      HDMI 2.1

      Anthem MRX 740 8K comes with 7 HDMI 2.1 inputs with 8K support. It has 3 outputs - 2 for MAIN and 1 for ZONE2.

      Onkyo TX-SR309 comes with 3 HDMI inputs. It has 1 output.

      • 8K/60Hz and 4K/120Hz Passthrough on Anthem MRX 740 8K: All inputs pass up to 8K 50/60Hz and 4K 100/120Hz 4:4:4 video signal.
        1080/60p Passthrough on Onkyo TX-SR309: All inputs pass up to 1080p 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 Anthem MRX 740 8K only).
      • HDCP 2.3 Copy Protection: Anthem MRX 740 8K 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)

      Anthem MRX 740 8K supports HDR10, HDR10+, Dolby Vision and Hybrid Log-Gamma.

      Onkyo TX-SR309 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.

      • HDR10: HDR10 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 10-bit color which corresponds to 1024 shades of the primary RGB colors. It is technically limited to a maximum of 10,000 nits peak brightness, however common HDR10 contents are mastered with peak brightness from 1,000 to 4,000 nits.
      • HDR10+: HDR10+ is an HDR video technology that adds dynamic metadata to HDR10 source files. The dynamic metadata are used to adjust brightness levels on a scene-by-scene or even frame-by-frame basis. HDR10+ supports maximum of 10,000 nits peak brightness and 10-bit or more (up to 16-bit) color bit depth. It uses Samsung's dynamic metadata defined in SMPTE ST 2094-40.
      • Dolby Vision: Dolby Vision is a set of technologies developed by Dolby Laboratories for high dynamic range (HDR) video. It covers content creation, distribution, and playback. Like HDR10+, it includes dynamic metadata that are used to adjust and optimize each frame of the HDR video to the consumer display's capabilities in a way specified by the content creator. Dolby Vision allows for a maximum resolution of 8K up to 12-bit color depth, maximum peak brightness of 10,000 nits and a color gamut up to Rec. 2020. It uses Dolby's proprietary dynamic metadata defined in SMPTE ST 2094-10.
      • Hybrid Log-Gamma (HLG): The Hybrid Log-Gamma (HLG) is a transfer function developed mainly for HDR live video feed and over-the-air broadcasts. It is an HDR format that uses BT.2020 color primaries and a bitdepth of 10-bit. It is backward compatible with the transfer function of SDR and is designed to be better-suited for television broadcasting, where the metadata required for other HDR formats is not backward compatible with non-HDR displays. HLG defines a non-linear optical-electro transfer function, in which the lower half of the signal values use a gamma curve and the upper half of the signal values use a logarithmic curve.

      IMAX Enhanced

      Anthem MRX 740 8K 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.
      • IMAX Enhanced Content: IMAX Enhanced studio partners have announced IMAX Enhanced versions of movies that exclusively feature IMAX's signature picture, sound and scale.
      • Picture: Stunning, ultra-vivid 4K HDR picture that utilizes the newest, proprietary Digital Media Remastering technology (DMR) developed by IMAX. DMR accurately reduces noise and grain under the filmmaker’s guidance to best optimize the content for a much higher-quality, higher-brightness display. Without this technology, high-dynamic range content can actually look worse than what was originally seen and intended by the filmmaker.
      • Sound: IMAX and DTS have partnered with award-winning Hollywood sound mixers leveraging DTS:X codec technology integrated in home audio equipment and select televisions to deliver an IMAX signature sound experience with deeper bass and more dynamic range.
      • Scale: Select IMAX Enhanced titles that were shot with IMAX-certified cameras or specially formatted for IMAX theatres feature its exclusive expanded aspect ratio, enabling viewers to see the full scale and scope of the picture on 4K HDR TVs.
      • Streaming Services: IMAX Enhanced is now available on the world’s biggest streaming services, including Disney+, BRAVIA CORE, Tencent, iQiyi and more.

      Gaming Features

      Anthem MRX 740 8K supports Auto Low Latency Mode (ALLM), Variable Refresh Rate (VRR) and Quick Frame Transport (QFT) for lag-free and smooth gaming.

      • Auto Low Latency Mode (ALLM): Auto Low Latency Mode enables the ideal latency setting to automatically be set allowing for smooth, lag-free and uninterrupted viewing and interactivity. When the receiver detects a gaming signal it will enter ALLM. The signal will also be sent to the TV causing it to automatically switch to a low-latency, low-lag mode for gaming. Some functions will not be available on the receiver and TV during ALLM.
      • Variable Refresh Rate (VRR): VRR enables a gaming source such as a console or computer to deliver video frames as fast as it can, which in many cases is slower than the normal static refresh rate. It allows the TV to adapt to certain frame rate which reduces or eliminates lag, judder and frame tearing for more fluid and better detailed gameplay.
      • Quick Frame Transport (QFT): QFT reduces latency for smoother no-lag gaming, and real-time interactive virtual reality. It transports each frame at a higher rate to decrease display latency, which is the amount of time between a frame being ready for transport in the GPU and that frame being completely displayed.

      Inputs and Outputs


      • Analog Pre-Outs: Anthem MRX 740 8K has 11.2 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, Anthem MRX 740 8K has 11 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.
      • XLR Inputs: There is one pair of XLR inputs on Anthem MRX 740 8K. If your CD player, Blu-Ray player or other source have XLR outputs you can connect them to the receiver's XLR Inputs for higher quality balanced connection.
      • Analog Line Inputs and Outputs: There are 4 pair of line inputs on Anthem MRX 740 8K and 6 pair of line inputs on Onkyo TX-SR309 for connecting sources with analog outputs. There are also 1 pair of line outputs on the receivers.
      • Digital Inputs and Outputs: 1 optical input, 3 optical outputs and 2 coaxial inputs are available on Anthem MRX 740 8K and 0 optical input, 2 optical outputs and 1 coaxial input are available on Onkyo TX-SR309 for digital audio connections.
      • Headphone Output: There is a 6.3 mm (1/4") headphone output jack on the front panel of each receiver.


      • HDMI:
      • Anthem MRX 740 8K
        7   Outputs: 3 (2 for MAIN, 1 for ZONE2)
        8K Inputs: 7.
      • Onkyo TX-SR309
        3   Outputs: 1
        8K Inputs: 0.
      • Composite Video: Connect you VCR, Laserdisc player and other old video equipment with composite video cables.
      • Anthem MRX 740 8K
        0   Outputs: 0.
      • Onkyo TX-SR309
        5   Outputs: 2.
      • 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.
      • Anthem MRX 740 8K
        0   Outputs: 0.
      • Onkyo TX-SR309
        2   Outputs: 1.

      Front A/V Inputs

      • Anthem MRX 740 8K: None
      • Onkyo TX-SR309: USB, Composite Video, RCA Audio

      Anthem MRX 740 8K

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      Onkyo TX-SR309

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      And in the end let us list all the available specifications of the receivers side-by-side.

      BASICS Anthem MRX 740 8K Onkyo TX-SR309
      ModelMRX 740 8KTX-SR309
      TypeA/V ReceiverA/V Receiver
      CountryNorth AmericaUSA
      Release Year20212011
      AMPLIFIER Anthem MRX 740 8K Onkyo TX-SR309
      Front Wide Channel Support
      AmplifierClass A/B on Channels 1-5 and Class D on the rest
      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 Anthem MRX 740 8K Onkyo TX-SR309
      Digital Processing Crossover Network
      Digital Signal Processing (DSP) EngineNext-Generation DSP PlatformAdvanced 32-Bit Processing DSP Chip
      DAC Specs768 kHz/32 Bit192 kHz/24 Bit
      Maximum Channel Processing11.15.1
      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
      DTS Neural:X
      DTS Virtual:X
      DTS Neo Neo:6
      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 USBFLAC, WMA, MP3, AAC
      High Resolution Music Playback via USB and/or Network
      High Resolution Audio Formats via USB
      Gapless Playback
      DSD via HDMI 2-ch/Multi-ch Input
      DSD via USB
      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
      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 Anthem MRX 740 8K Onkyo TX-SR309
      Auto Speaker Calibration System with Mic.Anthem Room Correction (ARC Genesis)
      VIDEO Anthem MRX 740 8K Onkyo TX-SR309
      HDMI Version2.1
      Enhanced ARC
      HDCP Version2.3
      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 Passthroughup to 8K 50/60Hz and 4K 100/120Hz 4:4:4up to 1080p
      Video Signal Upscaling
      Analog To HDMI Upconversion
      Component Video Upscaling
      Analog to Analog Video conversion
      isf Certified Calibration Control
      CONNECTIVITY Anthem MRX 740 8K Onkyo TX-SR309
      MHL Input
      DLNA 1.5
      Chromecast Built-In
      DTS Play-Fi
      Works with Amazon Alexa
      Google assistant
      Apple Siri
      Works with SONOS
      AirPlay AirPlay 2
      Apple Product Connection iPod, iPhone and iPad iPod and iPhone via USB or optional DS-A4 Dock (sold separately)
      Remote App Anthem Remote App
      InstaPrevue Input Source Prevue
      Ethernet Switch
      HDBaseT Compatible
      HDMI Inputs73
      HDMI Outputs3 (2 for MAIN, 1 for ZONE2)1
      8K Inputs7
      USB Input for factory service1 Front
      USB DC Out Port
      RCA Line Input46 (1 front)
      RCA Line Output11
      XLR Line Inputs
      Phono Input
      Optical Inputs32
      Optical Outputs1
      Coaxial Inputs21
      Composite Video Input5 (1 front)
      Composite Video Output2
      S-Video Input
      S-Video Output
      Component Video Input2
      Component Video Output1
      PC In
      Multi-Channel Input
      RCA Pre-Outs11.20.1
      XLR Pre-outs
      Front A/V InputsUSB, Composite Video, RCA Audio
      Speaker A/B
      Headphone Out6.3 mm (1/4")6.3 mm (1/4")
      ZONES Anthem MRX 740 8K Onkyo TX-SR309
      Powered Zones
      Zone 2 OutsHDMI, Pre Out
      Whole House Mode
      RS-232C Interface
      +12V Trigger Output3
      Remote (IR) Input/Output1 / 0
      MISC Anthem MRX 740 8K Onkyo TX-SR309
      On-Screen Display Basic Overlay
      IP Control for CI
      Detachable Power Cord
      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 Anthem MRX 740 8K Onkyo TX-SR309
      Analog Tuner FM/AM
      Digital Radio
      Internet Radio
      SiriusXM Internet Radio
      CONSTRUCTION Anthem MRX 740 8K Onkyo TX-SR309
      Solid Aluminum Front
      Speaker Terminals77
      Large Speaker Terminals70
      Color-Coded Speaker Terminals
      Transparent High-Grade Speaker Terminals
      18mm Pitch High Grade Pre-outs
      19mm-Pitch Audio Inputs
      Gold plated RCA terminals
      POWER Anthem MRX 740 8K Onkyo TX-SR309
      Power SupplyAC 120 V, 60 HzAC 120 V, 60 Hz
      Independent Power Supply
      H.C.P.S. (High Current Power Supply) Massive High Power Transformer
      Toroidal Transformer
      Power Consumption485 W3.3 A
      No Sound Power40 W
      Standby Power0.3 W0.2 W
      GENERAL Anthem MRX 740 8K Onkyo TX-SR309
      Dimensions (W x H x D)431.8 mm x 152.4 mm x 364 mm
      17" x 6" x 14-1/2" x
      435 mm x 150 mm x 328 mm
      17-1/8" x 5-7/8" x 12-15/16"
      Weight15.1 kg (33.2 lbs)7.5 kg (16.5 lbs)
      Warranty2 Years
      SPECS Anthem MRX 740 8K Onkyo TX-SR309
      Power Output (8 Ω, 20 Hz - 20 kHz, 265 W (0.7% THD)
      Power Output (8 Ω, 1 kHz, 2140 W (1% THD) on Channels 1-5, 60 W (1% THD) on Remaining Channels
      Power Output (6 Ω, 1 kHz, 2170 W (1% THD) on Channels 1-5, 75 W (1% THD) on Remaining Channels90 W (0.9% 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)100 W (1% 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
      THD0.08% (20 Hz - 20 kHz, Half power)
      Damping Factor60 (Front, 1 kHz, 8 Ω)
      Input Sensitivity and Impedance (Line)200 mV/47 kΩ (Line)
      Rated Lineout Level and Impedance200 mV/2.2 kΩ (REC OUT)
      Maximum Preout Level and Impedance5.2 VRMS, 7.1 VRMS
      Maximum Lineout Level and Impedance2 V/2.2 kΩ (REC OUT)
      Rated Headphone Jack Output Level and Impedance32 Ω - 600 Ω
      S/N Ratio (Line, IHF-A)110 dB100 dB
      Frequency Response (Analog In)20 Hz - 30 kHz +/-0.2 dB20 Hz - 50 kHz/+1 dB, -3 dB (DSP bypass)
      DSD Sampling Rates via HDMI2.8 MHz
      Video Input Sensitivity/Output Level and Impedance1 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
      FM Frequency87.5 MHz - 107.9 MHz
      AM Frequency522/530 kHz - 1611/1710 kHz

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

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