NAD T 778 vs Yamaha RX-A4A

      NAD T 778

      Yamaha RX-A4A
      89
      Image cannot be found
      90
      Image cannot be found
      All
      USA Canada UK, Europe and Russia Australia
      Taiwan
      Brazil and Central and South America China Korea Asia and General
      Image cannot be found
      Image cannot be found
      Image cannot be found
      Image cannot be found
      Image cannot be found
      Image cannot be found
       
       

      Highlights

      • 9.2 Channels
      • 11.2 Channel Processing
      • 140 W (8 Ω, 1% THD, 2 channel driven)
      • Dolby Atmos, DTS:X
      • HDR10, Dolby Vision
      • 4K/60Hz Passthrough
      • Wi-Fi, Bluetooth, Ethernet
      • Phono Input

      Highlights

      • 7.2 Channels
      • 7.1 Channel Processing
      • 110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      • HDMI 2.1
      • Dolby Atmos, DTS:X
      • HDR10, HDR10+, Dolby Vision
      • 8K Passthrough, 4K/60Hz Upscaling
      • Wi-Fi, Bluetooth, Ethernet
      • Phono Input

      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 NAD T 778
      4. Advantage of Yamaha RX-A4A
      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 NAD T 778 to Yamaha RX-A4A 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 NAD T 778 has 9 channel and the Yamaha RX-A4A has 7 channel amplifiers with NAD T 778's being more powerful.


      NAD T 778 Yamaha RX-A4A

      NAD T 778 was introduced in 2020 and represents a current flagship model of a manufacturer. It is equipped with 9 channel amplifier with 140 W (8 Ω, 1% THD, 2 channel driven) power per channel and is capable of 11.2 maximum channel processing. It supports Dolby Atmos and DTS:X, passes 4K/60Hz video signal.

      Yamaha RX-A4A was introduced in 2021. 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 7.1 maximum channel processing. It supports Dolby Atmos and DTS:X, passes 8K/60Hz and 4K/120Hz and upscales up to 4K 60p 4:4:4 video signal.

      We evaluated NAD T 778 and Yamaha RX-A4A and gave them scores of 89 and 90 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.

      NAD T 778

      Yamaha RX-A4A

      Amplifier
      93
      Amplifier
      90
      Audio Features
      87
      Audio Features
      88
      Video Features
      94
      Video Features
      99
      Connectivity
      87
      Connectivity
      88
      Zones
      84
      Zones
      80
      Radio
      82
      Radio
      90
      OVERALL
      89
      OVERALL
      90

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

      2. Pros and Cons

      In this section we present pros and cons of NAD T 778 and Yamaha RX-A4A.

      PROS

      NAD T 778

      Yamaha RX-A4A

      •   High Power Output - 140 W
      •   11.2 Channel Processing
      •   Dolby Atmos
      •   DTS:X
      •   MQA Decoding
      •   Auto Speaker Calibration System with Mic.
      •   HDR10
      •   Dolby Vision
      •   eARC
      •   New HDCP Version
      •   Wi-Fi
      •   Bluetooth
      •   Works with Amazon Alexa
      •   Google Assistant
      •   BluOS
      •   USB Input
      •   Phono Input
      •   RCA Pre-Outs
      •   Ethernet
      •   Spotify
      •   Tidal
      •   Toroidal Transformer
      •   High Power Output - 110 W
      •   Dolby Atmos
      •   Dolby Atmos Height Virtualization
      •   DTS:X
      •   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
      •   QFT
      •   8K Passthrough
      •   Wi-Fi
      •   Bluetooth
      •   Works with Amazon Alexa
      •   Google Assistant
      •   7 HDMI Inputs
      •   4 HDMI Outputs
      •   7 8K Inputs
      •   USB Input
      •   Phono Input
      •   RCA Pre-Outs
      •   Ethernet
      •   Analog Tuner
      •   Spotify
      •   Tidal

      CONS

      NAD T 778

      Yamaha RX-A4A

      •   No Front Wide Channel Support
      •   No Dolby Atmos Height Virtualization
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   No DSD via HDMI
      •   No HDR10+
      •   No 8K Passthrough
      •   0 8K Input
      •   Few RCA Line Inputs
      •   No Composite Video Inputs
      •   No Analog Tuner
      •   No Digital Radio
      •   No Pandora
      •   No Front Wide Channel Support
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   Few RCA Line Inputs
      •   No Composite Video Inputs
      •   No Digital Radio
      •   No Pandora


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

      AVERAGE

      NAD T 778

      Yamaha RX-A4A

      •   9.2 Channels
      •   6 HDMI Inputs
      •   2 HDMI Outputs
      •   2 Zones
      •   7.2 Channels
      •   7.1 Channel Processing
      •   2 Zones
      •   Bluetooth 4․2

      3. Advantage of NAD T 778

      This section shows those features and specifications which are the reason to choose NAD T 778 over Yamaha RX-A4A.

      Check the Price

      NAD T 778
      Image cannot be found
      Image cannot be found
      Image cannot be found
      NAD T 778 vs Yamaha RX-A4A
      More Channels 9.2 vs 7.2
      Higher Power Output 140 W (8 Ω, 1% THD, 2 channel driven) vs 110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      More Channel Processing 11.2 vs 7.1
      Network Audio Formats MP3, AAC, WMA, OGG, FLAC, ALAC, WMA-L, MQA, WAV, AIFF vs MP3, WMA, MPEG-4 AAC, Apple Lossless, WAV, FLAC, AIFF, DSD
      Music Playback via USB MP3, AAC, WMA, OGG, FLAC, ALAC, WMA-L, MQA, WAV, AIFF vs MP3, WMA, MPEG-4 AAC, Apple Lossless, WAV, FLAC, AIFF, DSD
      USB Input 2 vs USB memory, Portable Audio Player
      More Coaxial Inputs/Outputs 2 vs 1
      More RCA Pre-Outs 11.2 vs 7.2
      Front A/V Inputs HDMI, USB vs USB
      RS-232C Interface vs
      +12V Trigger Output 3 vs 2
      Remote (IR) Input/Output 1 / 3 vs 1 / 1
      Gold plated RCA terminals vs
      Universal Power Supply AC 100-240 V, 50/60 Hz vs AC 110-120 V, 60 Hz
      Bigger Power Supply 700 W vs 410 W
      Higher Power Output (8 Ω, 1 kHz, 2 channel Driven, FTC) 140 W (1% THD) vs 120 W (0.9% THD)
      Higher Damping Factor 300 (20 Hz - 1 kHz, 8 Ω) vs 120 (Front, 1 kHz, 8 Ω)
      Higher Maximum Preout Level and Impedance 4.5 Vrms vs 2.0 V
      Check out other receivers which are frequently compared to NAD T 778.
      Yamaha RX-A6A
      Image cannot be found

      9.2 channel

      150 W

      Marantz Cinema 40
      Image cannot be found

      9.4 channel

      125 W

      Yamaha RX-A8A
      Image cannot be found

      11.2 channel

      150 W

      NAD T 758 V3i
      Image cannot be found

      7.1 channel

      110 W

      Anthem MRX 740 8K
      Image cannot be found

      7.2 channel

      140 W

      Marantz Cinema 30
      Image cannot be found

      11.4 channel

      140 W

      Arcam AVR11
      Image cannot be found

      7.2 channel

      80 W

      Marantz Cinema 50
      Image cannot be found

      9.4 channel

      110 W

      Denon AVR-X4800H
      Image cannot be found

      9.4 channel

      125 W

      Onkyo TX-RZ50
      Image cannot be found

      9.2 channel

      120 W

      Yamaha RX-V6A
      Image cannot be found

      7.2 channel

      100 W

      Anthem MRX 1140 8K
      Image cannot be found

      11.2 channel

      140 W

      4. Advantage of Yamaha RX-A4A

      This section shows those features and specifications which are the reason to choose Yamaha RX-A4A over NAD T 778.

      Check the Price

      Yamaha RX-A4A
      Image cannot be found
      Image cannot be found
      Image cannot be found
      NAD T 778 vs Yamaha RX-A4A
      Dolby Atmos Height Virtualization vs
      Higher Resolution Music Playback via USB up to 192 kHz vs up to 384 kHz/32 Bit
      DSD via HDMI vs 2-ch/Multi-ch Input
      DSD via USB vs 2-ch Input
      Dialog Normalization vs
      Dialogue Lift vs
      HDR10+ vs
      Newer HDCP Version 2.2 vs 2.3
      QMS vs
      Auto Low Latency Mode Pass-through vs
      VRR vs
      QFT vs
      Video Signal Passthrough up to 4K 50/60Hz 4:4:4 vs up to 8K 50/60Hz and 4K 100/120Hz 4:4:4
      Video Signal Upscaling vs up to 4K 60p 4:4:4
      Wi-Fi via dongle vs
      Apple Siri vs
      More HDMI Inputs 6 (1 front) vs 7
      More HDMI Outputs 2 (simultaneous) vs 3 (2 for MAIN, 1 for ZONE2)
      More 8K Inputs vs 7
      More RCA Line Inputs 2 vs 3
      Analog Tuner vs FM/AM
      Lower THD 0.08% (20 Hz-20 kHz, rated power)
      0.03% (20 Hz-20 kHz, 1/3 power)      		 vs 0.05% (AUDIO 2 etc. to Speaker Out, 20 Hz - 20 kHz, 55 W, 8 Ω)
      Higher S/N Ratio (Line, IHF-A) Amplifier Section: 100 dB (ref. rated power at 8 Ω, A-WTD)
      Preamplifier Section: 100dB (ref. 2V, A-WTD)      		 vs 110 dB
      Higher S/N Ratio (Phono MM, IHF-A) 80 dB (2Vrms, A-WTD) vs 95 dB
      Longer Warranty 2 Years vs 3 Years
      Check out other receivers which are frequently compared to Yamaha RX-A4A.
      Yamaha RX-V6A
      Image cannot be found

      7.2 channel

      100 W

      Yamaha RX-A2A
      Image cannot be found

      7.2 channel

      100 W

      Yamaha RX-A6A
      Image cannot be found

      9.2 channel

      150 W

      Yamaha RX-A8A
      Image cannot be found

      11.2 channel

      150 W

      Yamaha RX-V4A
      Image cannot be found

      5.2 channel

      80 W

      Onkyo TX-RZ50
      Image cannot be found

      9.2 channel

      120 W

      Denon AVR-X3800H
      Image cannot be found

      9.4 channel

      105 W

      Denon AVC-X3800H
      Image cannot be found

      9.4 channel

      105 W

      Marantz Cinema 60
      Image cannot be found

      7.2 channel

      100 W

      Onkyo TX-NR6100
      Image cannot be found

      7.2 channel

      100 W

      Marantz Cinema 50
      Image cannot be found

      9.4 channel

      110 W

      Onkyo TX-NR7100
      Image cannot be found

      9.2 channel

      100 W

      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 NAD T 778 Yamaha RX-A4A
        High Power Output140 W (8 Ω, 1% THD, 2 channel driven)110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
        Dolby Atmos up to 7.1.4
        DTS:X up to 7.1.4
        Auto Speaker Calibration System with Mic. Dirac Live™ YPAO sound optimization with R.S.C., Multipoint, 3D, 64-Bit High Precision EQ Calculation, Low Frequency mode and Angle measurement
        HDR10
        Dolby Vision
        eARC
        New HDCP Version2.22.3
        Wi-Fi via dongle
        Bluetooth via USB micro adapter SBC, AAC
        Works with Amazon Alexa
        Google Assistant
        USB Input2USB memory, Portable Audio Player
        Phono Input
        RCA Pre-Outs11.27.2
        Ethernet
        Spotify
        Tidal
      WEAKNESSES NAD T 778 Yamaha RX-A4A
        No Front Wide Channel Support
        No IMAX Enhanced
        No Auro 3D with Auro-Matic Upmixer
        Few RCA Line Inputs23
        No Composite Video Inputs
        No Digital Radio
        No Pandora

      6. Amplifier

      NAD T 778 Yamaha RX-A4A

      9 channel Hybrid Digital Amplifier: NAD T 778 features 9 channel power amplifier. It is rated at 140 W (8 Ω, 1% THD, 2 channel driven) and is able to drive 4 ohm speakers.

      7 channel Amplifier: Yamaha RX-A4A 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.
      • Toroidal Transformer: NAD T 778 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 NAD T 778 Yamaha RX-A4A
      Channels9.27.2
      Power Output140 W (8 Ω, 1% THD, 2 channel driven)110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Front Wide Channel Support
      THX™ Certification
      Continuous 6 Ω Rated
      Certified 4 Ω Performance
      Bi-amp Capability

      Check the Price

      NAD T 778
      Image cannot be found
      Image cannot be found
      Image cannot be found

      7. Speaker Configurations

      NAD T 778's and Yamaha RX-A4A's amplifiers can be assigned for different speaker configurations.

      • Dolby Atmos Configurations: The following speaker configurations are supported for Dolby Atmos:
      • NAD T 778: 5.2.2, 5.2.4, 7.2.2 with internal amplifier and 7.2.4 with addition of external 2 channel amplifier.
      • Yamaha RX-A4A: 5.2.2 with internal amplifier.
      • DTS:X Configurations: The following speaker configurations are supported for DTS:X:
      • NAD T 778: The speaker configurations for DTS:X are the same as for Dolby Atmos - 5.2.2, 5.2.4, 7.2.2 with internal amplifier and 7.2.4 with addition of external 2 channel amplifier.
      • Yamaha RX-A4A: The speaker configurations for DTS:X are the same as for Dolby Atmos - 5.2.2 with internal amplifier.
      • Configurations without height channels: There are also other speaker configurations available which do not include height channels:
      • NAD T 778: 5.2, 7.2 with internal amplifier.
      • Yamaha RX-A4A: 5.2, 7.2 with internal amplifier.
      • 2-ch Bi-Amp: Both models are 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

      NAD T 778 and Yamaha RX-A4A support Dolby Atmos.

      • Dolby Surround Upmixer: Both models support 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: Yamaha RX-A4A 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

      NAD T 778 and Yamaha RX-A4A support DTS:X.

      • DTS Neural:X: Both models feature 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 Dialog Control: Both models have 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.
      AUDIO DECODING NAD T 778 Yamaha RX-A4A
      Dolby Atmos up to 7.1.4
      Dolby Atmos Height Virtualization
      Dolby Atmos Music
      Dolby TrueHD
      Dolby Digital Plus
      Dolby Surround Upmixer
      Dolby Pro Logic
      DTS:X up to 7.1.4
      DTS Neural:X
      DTS Virtual:X
      DTS Neo
      DTS-HD Master Audio
      DTS-HD High Resolution Audio
      DTS 96/24
      IMAX Enhanced
      Auro 3D with Auro-Matic Upmixer

      Check the Price

      Yamaha RX-A4A
      Image cannot be found
      Image cannot be found
      Image cannot be found

      9. HDMI

      NAD T 778 comes with 6 HDMI inputs. It has 2 outputs which work parallelly and output the same signal.

      Yamaha RX-A4A comes with 7 HDMI 2.1 inputs with 8K support. It has 3 outputs - 2 for MAIN and 1 for ZONE2.

      • 4K/60Hz Passthrough on NAD T 778: All inputs pass up to 4K 50/60Hz 4:4:4 video signal.
        8K/60Hz and 4K/120Hz Passthrough on Yamaha RX-A4A: All inputs pass up to 8K 50/60Hz and 4K 100/120Hz 4:4:4 video signal.
      • 4K Upscaling on Yamaha RX-A4A: It can upscale up to 4K 60p 4:4:4 from HDMI sources.
      • 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 both models).
      • HDCP Copy Protection: NAD T 778 is HDCP 2.2 and Yamaha RX-A4A is HDCP 2.3 compliant which is a requirement for 4K/HDR copy-protected content transmission.
      • Quick Media Switching (QMS): With HDMI 2.1a, Quick Media Switching for movies and video uses the HDMI VRR mechanism to eliminate the blackout period when an HDMI Source device switches its video mode. As long as the resolution remains the same and only the frame rate changes, QMS will instantly switch between frame rates. QMS eliminates A/V blackouts by using VRR technology to change frame rates, allowing instant changes from 24Hz to 60Hz frame rate, and anywhere in-between. The viewer never sees blank screens and gets a seamless experience (available on Yamaha RX-A4A only).
      • 3D Ready: Both receivers are able to pass 3D video through HDMI.

      HDR (High Dynamic Range)

      NAD T 778 supports HDR10, Dolby Vision and Hybrid Log-Gamma.

      Yamaha RX-A4A supports HDR10, HDR10+, Dolby Vision and Hybrid Log-Gamma. 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)

      NAD T 778 and Yamaha RX-A4A support 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

      Yamaha RX-A4A supports Auto Low Latency Mode (ALLM), Variable Refresh Rate (VRR) and Quick Frame Transport (QFT) for lag-free and smooth gaming.



      VIDEO FEATURES NAD T 778 Yamaha RX-A4A
      HDR10
      HDR10+
      Dynamic HDR
      BT.2020 color space
      Dolby Vision
      HLG (Hybrid Log Gamma)
      Enhanced Audio Return Channel (eARC)
      HDCP Version2.22.3
      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 50/60Hz 4:4:4up to 8K 50/60Hz and 4K 100/120Hz 4:4:4
      Video Signal Upscaling up to 4K 60p 4:4:4

      Check the Price

      NAD T 778
      Image cannot be found
      Image cannot be found
      Image cannot be found

      10. Inputs and Outputs

      Audio

      • Phono Input: There is an MM phono input on NAD T 778 and Yamaha RX-A4A with built-in phono stage for connecting the moving magnet cartridge output of the turntable directly to the receiver.
      • Analog Pre-Outs: NAD T 778 has 11.2 and Yamaha RX-A4A has 7.2 preamplifier outputs which allow you to connect the receivers to the external power amplifiers. 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, NAD T 778 has 11 channel processing but has only 9 channel amplifier, so it needs external amplifier connected to the analog pre-outs in order to reach its maximum speaker configuration.
      • Analog Line Inputs: There are 2 pair of line inputs on NAD T 778 and 3 pair of line inputs on Yamaha RX-A4A for connecting sources with analog outputs.
      • Digital Inputs: 2 optical inputs and 2 coaxial inputs are available on NAD T 778 and 2 optical inputs and 1 coaxial input are available on Yamaha RX-A4A for digital audio connections.
      • Headphone Output: There is a 6.3 mm (1/4") headphone output jack on the front panel of each receiver.

      Video

      • HDMI:
      • NAD T 778
        Inputs:         6 (1 front)   Outputs: 2 (simultaneous)
        8K Inputs: 0.
      • Yamaha RX-A4A
        Inputs:         7   Outputs: 3 (2 for MAIN, 1 for ZONE2)
        8K Inputs: 7.

      Front A/V Inputs

      • NAD T 778: HDMI, USB
      • Yamaha RX-A4A: USB

      NAD T 778

      Image cannot be found Image cannot be found

      Yamaha RX-A4A

      Image cannot be found Image cannot be found
      TERMINALS NAD T 778 Yamaha RX-A4A
      HDMI Inputs6 (1 front)7
      HDMI Outputs2 (simultaneous)3 (2 for MAIN, 1 for ZONE2)
      8K Inputs7
      USB Input2USB memory, Portable Audio Player
      Optical Inputs22
      Optical Outputs
      Coaxial Inputs21
      RCA Line Inputs23
      RCA Line Outputs
      XLR Line Inputs
      Phono Input
      Multi-Channel Input
      RCA Pre-Outs11.27.2
      XLR Pre-outs
      Composite Video Inputs
      Composite Video Outputs
      S-Video Inputs
      S-Video Outputs
      Component Video Inputs
      Component Video Outputs

      Check the Price

      Yamaha RX-A4A
      Image cannot be found
      Image cannot be found
      Image cannot be found

      11. Evaluations

      We evaluated NAD T 778 and Yamaha RX-A4A and gave them scores of 89 and 90 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.


      NAD T 778

      Yamaha RX-A4A

      OVERALL
      89
      OVERALL
      90

      Amplifier

      EXCELLENT
      93
      •   9.2 Channels
      •   High Power Output - 140 W
      •   Toroidal Transformer
      EXCELLENT
      90
      •   7.2 Channels
      •   High Power Output - 110 W

      Audio Features

      EXCELLENT
      87
      •   9.2 Channels
      •   No Front Wide Channel Support
      •   11.2 Channel Processing
      •   Dolby Atmos
      •   No Dolby Atmos Height Virtualization
      •   DTS:X
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   MQA Decoding
      •   No DSD via HDMI
      EXCELLENT
      88
      •   7.2 Channels
      •   No Front Wide Channel Support
      •   7.1 Channel Processing
      •   Dolby Atmos
      •   Dolby Atmos Height Virtualization
      •   DTS:X
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   DSD via HDMI

      Video Features

      EXCELLENT
      94
      •   HDR10
      •   No HDR10+
      •   Dolby Vision
      •   No 8K Passthrough
      EXCELLENT
      99
      •   HDR10
      •   HDR10+
      •   Dolby Vision
      •   HDMI 2.1
      •   Auto Low Latency Mode Pass-through
      •   VRR
      •   QFT
      •   8K Passthrough

      Connectivity

      EXCELLENT
      87
      •   eARC
      •   New HDCP Version
      •   Wi-Fi
      •   Bluetooth
      •   Works with Amazon Alexa
      •   Google Assistant
      •   BluOS
      •   6 HDMI Inputs
      •   2 HDMI Outputs
      •   0 8K Input
      •   USB Input
      •   Few RCA Line Inputs
      •   Phono Input
      •   RCA Pre-Outs
      •   No Composite Video Inputs
      •   Ethernet
      EXCELLENT
      88
      •   eARC
      •   New HDCP Version
      •   Wi-Fi
      •   Bluetooth
      •   Works with Amazon Alexa
      •   Google Assistant
      •   7 HDMI Inputs
      •   4 HDMI Outputs
      •   7 8K Inputs
      •   USB Input
      •   Few RCA Line Inputs
      •   Phono Input
      •   RCA Pre-Outs
      •   No Composite Video Inputs
      •   Ethernet
      •   Bluetooth 4․2

      Zones

      GOOD
      84
      •   2 Zones
      GOOD
      80
      •   2 Zones

      Radio

      GOOD
      82
      •   No Analog Tuner
      •   No Pandora
      •   Spotify
      •   Tidal
      EXCELLENT
      90
      •   Analog Tuner
      •   No Pandora
      •   Spotify
      •   Tidal

      12. Specifications

      GENERAL NAD T 778 Yamaha RX-A4A
      BrandNADYamaha
      SeriesAventage
      ModelT 778RX-A4A
      TypeA/V ReceiverA/V Receiver
      CountryAllTaiwan
      Release Year20202021
      PredecessorYamaha RX-A1070
      AMPLIFIER NAD T 778 Yamaha RX-A4A
      Channels9.27.2
      Power Output140 W (8 Ω, 1% THD, 2 channel driven)110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Front Wide Channel Support
      Amplifier DesignHybrid Digital Amplifier Technology
      THX™ Certification
      Continuous 6 Ω Rated
      Certified 4 Ω Performance
      Bi-amp Capability
      AUDIO FEATURES NAD T 778 Yamaha RX-A4A
      Surround:AI™
      DACESS Hyperstream DAC ES9007S
      DAC Specs384 kHz/32 Bit
      Maximum Channel Processing11.27.1
      Air Studios Monitor Certification
      Dolby Atmos up to 7.1.4
      Dolby Atmos Height Virtualization
      Dolby Atmos Music
      Dolby TrueHD
      Dolby Digital Plus
      Dolby Surround Upmixer
      Dolby Pro Logic
      Dolby Digital EX
      DTS:X up to 7.1.4
      DTS Neural:X
      DTS Virtual:X
      DTS Neo
      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
      MQA Decoding
      PCM 2-ch/Multi-ch Input 2-ch/Multi-ch Input
      Network Audio FormatsMP3, AAC, WMA, OGG, FLAC, ALAC, WMA-L, MQA, WAV, AIFFMP3, WMA, MPEG-4 AAC, Apple Lossless, WAV, FLAC, AIFF, DSD
      Music Playback via USBMP3, AAC, WMA, OGG, FLAC, ALAC, WMA-L, MQA, WAV, AIFFMP3, WMA, MPEG-4 AAC, Apple Lossless, WAV, FLAC, AIFF, DSD
      High Resolution Music Playback via USB and/or Network up to 192 kHz up to 384 kHz/32 Bit
      High Resolution Audio Formats via USBFLAC, WAV, AIFFApple Lossless, WAV, FLAC, AIFF, DSD
      Gapless Playback
      DSD via HDMI 2-ch/Multi-ch Input
      DSD via USB 2-ch Input
      DSD to PCM Converter
      USB DAC
      DTS Dialogue Control
      Dialog Enhancement
      Dialog Level Adjustment
      Dialog normalization
      Dialogue Lift
      Compressed Music Enhancer
      High-resolution Music Enhancer
      Adaptive DRC (Dynamic Range Control)
      Initial Volume & Maximum Volume Setting
      Audyssey Dynamic EQ
      Audyssey Dynamic Volume
      Audyssey LFC
      Audyssey Sub EQ HT
      Audyssey DSX
      Direct Mode
      Straight Decoding Mode
      Pure Direct Mode
      CINEMA DSP HD3
      DSP Programs24
      SILENT CINEMA / Virtual CINEMA DSP
      Virtual Speakers including surround back
      Independent Subwoofer Outputs
      CALIBRATION NAD T 778 Yamaha RX-A4A
      Auto Speaker Calibration System with Mic. Dirac Live™ YPAO sound optimization with R.S.C., Multipoint, 3D, 64-Bit High Precision EQ Calculation, Low Frequency mode and Angle measurement
      YPAO Volume
      PEQ for SUBDown to 15.6 Hz
      VIDEO FEATURES NAD T 778 Yamaha RX-A4A
      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 Version2.22.3
      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 4K 50/60Hz 4:4:4up to 8K 50/60Hz and 4K 100/120Hz 4:4:4
      Video Signal Upscaling up to 4K 60p 4:4:4
      Analog To HDMI Upconversion
      Component Video Upscaling
      Analog to Analog Video conversion
      isf Certified Calibration Control
      CONNECTIVITY NAD T 778 Yamaha RX-A4A
      Wi-Fi via dongle
      Bluetooth via USB micro adapter SBC, AAC
      Works with Amazon Alexa
      Google Assistant
      Chromecast Built-In
      Apple Siri
      Works with SonoS
      BluOS
      DTS Play-Fi
      MHL Input
      MusicCast
      AirPlay AirPlay 2 AirPlay 2
      Apple Product Connection iPod, iPhone and iPad iPod, iPhone and iPad
      Remote App free BluOS controller app for iOS and Android devices (iPhone® / iPad® / Android™ phone / tablet)
      InstaPrevue Input Source Prevue
      TERMINALS NAD T 778 Yamaha RX-A4A
      HDMI Inputs6 (1 front)7
      HDMI Outputs2 (simultaneous)3 (2 for MAIN, 1 for ZONE2)
      8K Inputs7
      USB Input2USB memory, Portable Audio Player
      USB DC Out Port
      Optical Inputs22
      Optical Outputs
      Coaxial Inputs21
      RCA Line Inputs23
      RCA Line Outputs
      XLR Line Inputs
      Phono Input
      Multi-Channel Input
      RCA Pre-Outs11.27.2
      XLR Pre-outs
      Composite Video Inputs
      Composite Video Outputs
      S-Video Inputs
      S-Video Outputs
      Component Video Inputs
      Component Video Outputs
      Ethernet
      Ethernet Switch
      PC In
      Front A/V InputsHDMI, USBUSB
      Speaker A/B
      Headphone Out6.3 mm (1/4")6.3 mm (1/4")
      Detachable Power Cord
      dockport
      ZONES NAD T 778 Yamaha RX-A4A
      Number of Zones22
      Powered Zones 2Zone 2
      Zone 2 OutsPre OutRCA Preout
      Zone B Video Output
      Zone GUI
      RS-232C Interface
      +12V Trigger Output32
      Remote (IR) Input/Output1 / 31 / 1
      Party Mode
      MISCELLANEOUS NAD T 778 Yamaha RX-A4A
      On-Screen DisplayGraphical User Interface
      SCENESCENE (8 sets)
      Web Control
      Control4 SDDP
      PreAmp Mode
      DisplayLCD touch panelHigh-resolution LCD display
      Remote ControllerHTR 8
      RADIO NAD T 778 Yamaha RX-A4A
      Analog Tuner FM/AM
      Presets40
      Digital Radio
      Internet Radio TuneIn, iHeartRadio, Calm Radio, Radio Paradise, Slacker Radio
      Pandora
      Spotify
      Tidal
      Deezer
      Napster
      SiriusXM
      CONSTRUCTION NAD T 778 Yamaha RX-A4A
      ConstructionModular Design
      A.R.T. Wedge
      Speaker Terminals99
      Large Speaker Terminals99
      Color-Coded Speaker Terminals
      Gold plated RCA terminals
      POWER NAD T 778 Yamaha RX-A4A
      Power SupplyAC 100-240 V, 50/60 HzAC 110-120 V, 60 Hz
      Toroidal Transformer
      Power Consumption700 W410 W
      Standby Power0.5 W0.4 W
      ECO Mode / Hybrid Standby Function
      Auto Power Standby
      PHYSICAL NAD T 778 Yamaha RX-A4A
      Dimensions (W x H x D)435 mm x 140 mm x 430 mm
      17-3/16" x 5-9/16" x 16-15/16"      		435 mm x 191 mm x 442 mm (with antenna: 435 mm x 270 mm x 442 mm)
      17-1/8" x 7-1/2" x 17-3/8" (with antenna up: 17-1/8" x 10-5/8" x 17-3/8")
      Weight12.1 kg (26.7 lbs)16.2 kg (35.7 lbs)
      Weight of Package15.5 kg (34.2 lbs)
      SPECIFICATIONS NAD T 778 Yamaha RX-A4A
      Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)110 W (0.06% THD)
      Power Output (8 Ω, 1 kHz, 2 channel Driven, FTC)140 W (1% THD)120 W (0.9% THD)
      Rated Power Output (8 Ω, 1 kHz, 1 channel Driven)135 W (0.9% THD)
      Maximum Effective Output Power (8 Ω, 1 kHz, 1 channel Driven, JEITA)165 W (10% THD)
      Power Output (6 Ω, 1 kHz, 1 channel driven, FTC)140 W (0.9% THD)
      Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)170 W (10% THD)
      Power Output (4 Ω, 1 kHz, 2 channel Driven)170 W (1% THD)
      Rated Power Output (4 Ω, 1 kHz, 1 channel Driven)170 W (0.9% THD, Front)
      Multi Channel Simultaneous Drive9 x 85 W (19.3dBW) (20 Hz - 20 kHz, all channels driven, 4 Ω and 8 Ω)
      Dynamic Power per Channel (4 Ω, Front)280 W
      Dynamic Power per Channel (8 Ω, Front)165 W
      THD0.08% (20 Hz-20 kHz, rated power)
      0.03% (20 Hz-20 kHz, 1/3 power)      		0.05% (AUDIO 2 etc. to Speaker Out, 20 Hz - 20 kHz, 55 W, 8 Ω)
      THD (Phono)0.04% (Phono to PRE OUT, 1 kHz, 1 V)
      Damping Factor300 (20 Hz - 1 kHz, 8 Ω)120 (Front, 1 kHz, 8 Ω)
      Input Sensitivity and Impedance (Line)Amplifier Section: 1.12 V (ref. 8 Ω, VOL at 0 dB for 85 W)
      Preamplifier Section: 245 mVrms (ref. 2V)      		220 mV/47 kΩ
      Input Sensitivity and Impedance (Phono MM)6.2 mVrms (2V output)3.7 mV/47 kΩ
      Maximum Input Sensitivity (Line)2.4 V (1 kHz, 0.5% THD)
      Maximum Input Sensitivity (Phono)90 mVrms (1 kHz)45 mV (1 kHz, 0.5% THD)
      Rated Preout Level and Impedance1.0 V/470 Ω
      Maximum Preout Level and Impedance4.5 Vrms2.0 V
      S/N Ratio (Line, IHF-A)Amplifier Section: 100 dB (ref. rated power at 8 Ω, A-WTD)
      Preamplifier Section: 100dB (ref. 2V, A-WTD)      		110 dB
      S/N Ratio (Line, EIA, at 1 W (1 kHz))Amplifier Section: 85 dB (ref. 1W at 8 Ω, A-WTD)
      S/N Ratio (Phono MM, IHF-A)80 dB (2Vrms, A-WTD)95 dB
      Phono RIAA Deviation0±0.5 dB (20 Hz - 20 kHz)
      Frequency Response (Analog In)Amplifier Section: ±0.3 dB/-0.8 dB (ref. 1kHz, 20 Hz - 20 kHz)
      Preamplifier Section: ±0.5dB (ref. 20 Hz - 20 kHz)      		+0/-3 dB (AUDIO 2 etc. to Front, Pure Direct, 10 Hz to 100 kHz)
      Residual noise (IHF-A Network)150 µV (Speaker Out)
      Channel Separation at 1 kHz/10 kHz (LINE)75 dB/61 dB
      Channel Separation at 1 kHz/10 kHz (Phono)75 dB/60 dB
      DSD Sampling Rates via HDMI2.8 MHz
      DSD Sampling Rates via USB11.2 MHz, 5.6 MHz, 2.8 MHz
      Ethernet Standard10BASE-T/100BASE-TX
      Wi-Fi StandardIEEE 802.11 a/b/g/n/ac
      Wi-Fi Terminal Frequency2.4 GHz, 5 GHz
      Bluetooth Version4․2
      Bluetooth Frequency2.4 GHz
      USB TerminalUSB2.0 5 V, 1 A
      FM Frequency87.5/87.50 MHz - 108.0/108.00 MHz
      FM 50 dB Quiet Sensitivity (IHF, 1 kHz, 100% MOD.)Mono: 3 µV (20.8 dBf)
      FM S/N RatioMono/Stereo: 69 dB/68 dB
      FM Harmonic Distortion (IHF, 1 kHz)Mono/Stereo: 0.5%/0.6%
      AM Frequency530/531 kHz to 1710/1611 kHz
      Warranty2 Years3 Years

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

      Amazon Affiliate Disclosure
      ZKelectronics is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for website owners to earn advertising fees by advertising and linking to Amazon (.com, .co.uk, .ca, etc) and any other websites that may be affiliated with Amazon Service LLC Associates Program.