Auto eARC Detection when using the TV's app or external devices
Supports dual HDMI audio interface (HDMI eARC and HDMI Audio)
Supports 4K@60 & HDR
Compatible with Dolby Atmos (via HDMI)
Supports Pixel clock rate up to 600 MHz
Supports S/PDIF, Stereo 3.5mm audio output
Supports DTS HD, Dolby TrueHD (via HDMI)
Supports HDMI 2.0 / 2.1(eARC)
HDCP 2.3 compliant
Three modes selection for audio format setting (2Ch/ 5.1Ch/ 7.1Ch)
Support CEC (Use the TV RC to adjust the Soundbar sound and CEC connecting device to power ON/OFF)
This audio extractor has three HDMI outputs, one for TV 4K@60Hz/HDR video and audio signals, one for eARC Soundbar, one for Amplifier HDMI audio. It also has S/PDIF(Optical) and analog 3.5mm stereo interface outputs.
The TV signal can be transmitted back to Soundbar via eARC (enhanced Audio Return Channel) to play high-quality surround sound. Even Non-eARC TV can enjoy the high-quality of eARC audio return for lossless audio up to Atmos.
Build-in eARC automatically detect the source of the signal (TV or external signal).
AUDIO AND VIDEO
INPUT PORTS:
1x HDMI Type A [19-pin female]
OUTPUT PORTS:
3x HDMI Type A [19-pin female]
1x S/PDIF (Optical)
1x 3.5mm audio jack
COMPLIANCES
HDMI Compliance
HDMI 2.1
HDCP Compliance
HDCP 2.3
VIDEO OUTPUT
Video Bandwidth:
18 Gbps
Video Resolutions:
Up to 4k@60Hz
Color Space:
RGB YUV 4:4:4 YUV 4:2:2 YUV 4:2:0
Color Depth:
12 bit
CEC & EARC SUPPORT
CEC:
Use the TV RC to adjust the Soundbar sound and CEC connecting device to power ON/OFF
eARC/ARC:
Yes
SWITCHES
EDID:
Build-in eARC automatically detects the source of the signal (TV or external signal), no need to switch on or off
Audio Select:
Select the audio formats from 2Ch, 5.1Ch, 7.1Ch
AUDIO OUTPUT
HDMI Audio Formats:
PCM 2.0, LPCM 5.1 / 7.1, Dolby Digital, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos, DTS 5.1, DTS ES 6.1, DTS HRA, DTS HD Master, DTS:X
Yes, either HDMI input port or HDMI ARC port is required to extract the sound with this product.
No, this product doesn't support the feature of downscaling or upscaling the audio signals. Whatever the audio signals that you're inputting, you will get that audio signal as an output.
- Due to CEC and ARC compatibility among different brands and models, there might be some abnormal issues when using HDMI connection, ex: audio might not work or might work intermittently, all the devices can’t be turn off at the same time, etc.
- If you have the above problem,
Please visit the device’s website for further CEC-related information
Turn the devices’ CEC off to reduce CEC link issues
- Make sure your audio system is on and select the correct signal source on it
- Make sure that all the cables are connected properly
- Make sure the HDA-931 audio format can be decoded by the sound system
- Please refer to your Soundbar’s set up instructions
- Depending on the type of device, you should choose the correct audio format on TV: PCM, Dolby, or auto. If you want to output audio via Analog 3.5mm interface, please set your TV audio format to PCM
- Steps may differ between different TV manufacturers. Please refer to your TV’s user manual for more information
- This beeping sound may randomly happen because the HDA-931 is continuously sending audio signals to Soundbar, but the source singal could be from TV or external devices
- When switching between different source signals , a certain amount of time is required for TV or its’ apps, HDA-931 or source devices to process and convert the audio data. It could last 1-2 secs or more
- While processing data, HDA-931 will send blank signal to Soundbar, which results in the beeping sound. It is neither abnormal nor a defect of HDA-931. We cannot avoid this condition as it is data processing time take by all the connected devices. The time may vary for different TVs or source devices . Normally the beeping sound disappears soon, it won’t affect Soundbar to play the audio
- If audio cuts in and out on your Soundbar, it might be EDID problems between the devices. Try power cycling all the devices (displays, external sources and audio system)
- For some audio systems, you must follow the installation procedure mentioned in the manual to function properly
*Note: To play videos on streaming box or TV app, make sure that your wifi speed meets the minimum standard on the platform. If you’re watching 4K video with the minimum internet speed, please avoid having multiple users to get on the internet at the same time, which might lead to screen-corruption.
- Here’s what you need to make Dolby Atmos work:
A TV which is capable of transmitting eARC signals
In order to transmit eARC audio, please use HDMI 2.1 certified UHS cable
The selection on the main unit matches the audio device
For some audio systems, you must follow the installation procedure mentioned in the manual to function properly
To play videos on streaming box or TV app, make sure that your wifi speed meets the minimum standard on the platform
Please check that eARC indication LED remains on:
Light on: eARC audio signal from TV
Light off: eARC audio signal from external source (Default)
Please switch Audio format to 5.1 or 7.1CH on HDA-931
- If your TV only has ARC input, the HDA-931 cannot upgrade it to eARC. However, you can extract audio from video with the HDA-931 and transmit ARC/eARC signals to Atmos-enabled audio system. Please refer to the following methods:
When you are watching Dolby Atmos content over a streaming box or any external HDMI source device, you can still transmit Atmos audio to eARC Soundbar or AVR via HDA-931
- Please follow the Sonos connection sequence; you'll need to connect and turn on other devices first (source device/TV) then turn on the soundbar as the last step
- Once you get Dolby Atmos, we suggest keeping the Sonos soundbar always ON. Only turn ON/OFF the TV or HDA-935 unit when done with watching the programs
- If audio cuts in and out on your Soundbar, it might be EDID problems between devices. Firstly, try cycling between different audio audio formats on HDA-931 main unit by pressing the Audio Select button on the back
- Try power cycling all the devices (display, external sources and audio system)
- For some audio systems, you must follow the installation procedure mentioned in the manual to function properly
Note: To play videos on streaming box or TV app, make sure that your wifi speed meets the minimum standard on the platform. If you’re watching 4K video with the minimum internet speed, please avoid having multiple users to get on the internet at the same time, which might lead to screen-corruption
HDA-931 User Manual Download 
on NVIDIA remote control to go to Menu Page
or V- 
on Remote Control
