AYINO HD820B 5.1CH Audio Converter Decoder

1. Introduction

The AYINO HD820B is a versatile 5.1CH Audio Converter Decoder designed to enhance your home theater audio experience. It functions as a Bluetooth 5.0 receiver and a Digital-to-Analog Converter (DAC), supporting a wide range of audio inputs and decoding formats. This device allows you to convert various digital audio sources into a 5.1-channel independent output or a 2.0-channel output, which can then be connected to a power amplifier or active speakers for immersive surround sound.

Key features include HDMI-compatible ARC support, SPDIF (Optical), Coaxial, PC-USB, AUX, and USB 2.0 inputs, along with RCA analog audio outputs. It supports advanced audio formats such as DTS HD, Dolby Atmos, AC3, FLAC, APE, and resolutions up to 4Kx2K@30Hz with 3D support.

Image: Overview of the HD820B decoder highlighting its main features and connectivity options.

2. Package Contents

Please check the package carefully to ensure all items are present and in good condition:

• HD820B 5.1CH Audio Converter Decoder Unit
• Power Adapter (DC 12V/1A)
• Optical Cable
• Remote Control
• PC-USB Cable (for HD820B model)
• Coaxial Cable (for HD820B model)
• Bluetooth Antenna

Image: Visual representation of the accessories included with the HD820B.

3. Product Overview

3.1 Front Panel

Image: Detailed diagram of the HD820B front panel with labeled controls and indicators.

1. Power button: Turns the device on/off.
2. U disk and PC-USB interface: For USB drive playback and PC connection.
3. ARC mode LED: Indicates ARC input mode.
4. HDMI-Compatible mode LED: Indicates HDMI input mode.
5. Optical fiber mode LED: Indicates Optical input mode.
6. Coaxial mode LED: Indicates Coaxial input mode.
7. Bluetooth mode LED: Indicates Bluetooth input mode.
8. PC-USB sound card mode LED: Indicates PC-USB input mode.
9. U disk mode LED: Indicates U disk playback mode.
10. Channel mode LED: Indicates the current channel mode (e.g., 5.1ch/2.0ch).
11. IR receive port: For remote control signals.
12. Input switch key: Cycles through input sources.
13. U disk play previous song key (long press for volume down): Controls U disk playback and volume.
14. U disk play next song key (long press for volume up): Controls U disk playback and volume.

3.2 Rear Panel

Image: Detailed diagram of the HD820B rear panel with labeled ports.

1. DC-12V Power input port: Connect the provided power adapter.
2. Front channel (FL/FR): RCA outputs for Front Left and Front Right speakers.
3. Surround channel (SL/SR): RCA outputs for Surround Left and Surround Right speakers.
4. Center channel (CEN)/Subwoofer channel (SW): RCA outputs for Center and Subwoofer speakers.
5. Coaxial input port: Connect Coaxial digital audio sources.
6. Optical input port: Connect Optical (SPDIF) digital audio sources.
7. PC-USB Soundcard input port: Connect to a PC for USB audio.
8. HDMI-compatible input port: Connect HDMI audio/video sources.
9. Bluetooth antenna: For wireless Bluetooth reception.
10. HDMI-compatible output port (ARC): Connect to a TV/display supporting ARC for audio return.

4. Setup and Connection

The HD820B offers multi-device compatibility, allowing connection to various input and output devices. Ensure all connections are secure before powering on the device.

4.1 Connecting Input Devices

The HD820B supports multiple input sources:

• HDMI-compatible Input: Connect your game player, set-top box, projector, or PC via an HDMI cable to the HDMI-compatible input port (8) on the rear panel.
• Optical Input: Connect devices like Smart TVs or other audio sources using an optical cable to the Optical input port (6).
• Coaxial Input: Connect compatible audio sources using a coaxial cable to the Coaxial input port (5).
• PC-USB Input: Connect the HD820B to your PC using the PC-USB cable to use it as an external sound card.
• USB 2.0 Input (U Disk): Insert a USB flash drive into the USB 2.0 port (2) on the front panel for direct audio playback.
• Bluetooth 5.0: Ensure the Bluetooth antenna (9) is connected. Pair your mobile device (phone, tablet) wirelessly via Bluetooth.

4.2 Connecting Output Devices

The HD820B provides both 5.1-channel and 2.0-channel analog audio outputs, as well as HDMI ARC, Optical, and Coaxial digital outputs.

• 5.1CH Analog Output: Connect the FL/FR (2), SL/SR (3), and CEN/SW (4) RCA outputs to a 5.1-channel amplifier or active speaker system using appropriate RCA cables.
• 2.0CH Analog Output: If using a 2.0 stereo system, only connect the FL/FR (Front Left/Right) RCA outputs to your amplifier or active speakers. The device will automatically activate FL/FR in 2.0ch output mode.
• HDMI-compatible ARC Output: Connect the HDMI-compatible output port (ARC) (10) to your Smart TV's HDMI ARC input. This allows the TV's audio to be sent back to the HD820B for decoding and output to your sound system. Use a 19-core standard HDMI-compatible cable for optimal performance.
• Optical Output: Connect to an external DAC or amplifier via an optical cable.
• Coaxial Output: Connect to an external DAC or amplifier via a coaxial cable.

Image: Diagram illustrating various input and output device connections to the HD820B.

Image: Examples of 5.1-channel interface connections to an amplifier and speakers.

5. Operation

5.1 Power On/Off

Press the Power button (1) on the front panel or the power button on the remote control to turn the device on or off.

5.2 Switching Input Sources

You can switch between different signal sources (HDMI, ARC, Coaxial, Optical, PC-USB, USB, Bluetooth) using:

• The Input switch key (12) on the front panel.
• The corresponding input selection buttons on the remote control (AUX, USB, COX, OPT, HDMI, ARC, BT, PCUSB).

The respective LED indicator on the front panel will light up to show the active input mode.

5.3 Bluetooth Pairing

1. Ensure the Bluetooth antenna is securely connected to the rear panel.
2. Switch the input source to Bluetooth mode using the front panel button or remote. The Bluetooth mode LED (7) will illuminate.
3. On your mobile device, search for Bluetooth devices and select the HD820B to pair.
4. Once paired, audio from your device will be streamed wirelessly to the HD820B. The external antenna provides a long reception distance of up to 20 meters.

Image: Bluetooth 5.0 wireless range with and without external antenna.

5.4 USB Disk Playback

Insert a FAT32 formatted USB disk (up to 128GB capacity) into the USB 2.0 input (2) on the front panel. The HD820B will automatically detect and play supported audio files. Use the U disk play previous/next song keys (13, 14) on the front panel or the remote control to navigate tracks. Long press these keys to adjust volume.

5.5 Remote Control Functions

The included remote control provides full functionality for power, input switching, volume adjustment, and U disk playback. It also features a learning function to control your TV or power amplifier.

Image: Detailed layout and instructions for the remote control, including its learning function.

Remote Learning Function:

1. Long press the 'OK' button for about 3 seconds; the red LED light will stay on, indicating learning mode.
2. Press the 'LEARN' button; the LED flashes, entering the learning receiving state.
3. Place the two remote controls (HD820B and TV/amplifier) 1-3 cm apart.
4. After aligning, press the button on your TV/amplifier remote that you want to learn, and hold it for about 2 seconds. The LED flashes three times quickly and then stays on continuously.
5. Repeat steps 3-4 until all desired keys are learned.
6. After learning, if no key is pressed for about 1 minute, it will automatically exit the learning state.

6. Compatibility and Decoding

The HD820B is designed for powerful audio decoding, supporting both hardware and software decoding for various audio formats to deliver true 5.1 or virtual 5.1 surround sound.

Image: Decoding process for DTS/AC3 and PCM audio formats.

6.1 Supported Audio Formats (HD820B)

• DTS HD
• DTS
• DTS-ES
• Dolby Atmos
• AC3
• WAV
• FLAC
• APE
• HDCD
• AAC
• WMV
• MP3
• M4A
• LPCM
• PCM

6.2 HDMI-compatible Features

• Supports HDMI-compatible input and one output.
• Supports HDCP and ARC (Audio Return Channel).
• Supports 4Kx2K@30Hz resolution and 3D video.
• Realizes 5.1-channel surround sound system through HDMI.

Image: HDMI-compatible 4K 3D capabilities.

Image: Diagram explaining the Audio Return Channel (ARC) functionality.

7. Specifications

8. Troubleshooting

• No Sound Output:
  • Ensure all cables are securely connected.
  • Verify the correct input source is selected on the HD820B.
  • Check the volume levels on both the HD820B and your connected amplifier/speakers.
  • Confirm that your audio source is outputting a compatible audio format. If using DTS/AC3, ensure your output system supports it.
  • If using HDMI ARC, ensure your TV's ARC function is enabled and you are using a standard 19-core HDMI cable.
• Poor Sound Quality:
  • Check cable quality and connections.
  • Ensure the audio source is of high quality.
  • Verify that the HD820B is decoding the audio correctly (e.g., DTS/AC3 for true 5.1, PCM for virtual 5.1).
  • Avoid interference from other electronic devices.
• Remote Control Not Responding:
  • Check battery levels in the remote control.
  • Ensure there are no obstructions between the remote and the IR receive port (11) on the HD820B.
  • Make sure the remote is pointed directly at the device.
• USB Disk Not Playing:
  • Ensure the USB disk is formatted to FAT32.
  • Check that the audio files are in a supported format (WAV, FLAC, APE, HDCD, AAC, WMV, MP3, M4A).
  • The maximum capacity supported is 128GB.

9. User Tips

• Optimal ARC Performance: For best results with HDMI ARC, always use a high-quality, standard 19-core HDMI cable. Some users report that sound adjustment from the TV remote works when transmitting to the DAC via HDMI ARC, but this can vary by TV model.
• True 5.1CH Audio: To experience true 5.1-channel audio, ensure your source material is encoded in DTS or AC3 and that your connected amplifier/speaker system is configured for 5.1 output.
• Firmware Updates: The device supports firmware upgrades. Check the manufacturer's official website periodically for updates to ensure optimal performance and compatibility.

10. Maintenance

To ensure the longevity and optimal performance of your HD820B Audio Converter Decoder, follow these maintenance guidelines:

• Cleaning: Use a soft, dry cloth to clean the exterior of the device. Do not use liquid cleaners or aerosol sprays, as they may damage the finish or internal components.
• Ventilation: Ensure the device is placed in a well-ventilated area to prevent overheating. Do not block any ventilation openings.
• Power Supply: Always use the provided DC 12V/1A power adapter. Disconnect the power adapter during lightning storms or when unused for long periods.
• Handling: Handle the device with care. Avoid dropping it or subjecting it to strong impacts.
• Environment: Keep the device away from direct sunlight, heat sources, excessive dust, moisture, and corrosive chemicals.

Image: Internal components and safety features of the power adapter, emphasizing its robust design.

11. Warranty and Support

The AYINO HD820B Audio Converter Decoder comes with a manufacturer's warranty. Please refer to the warranty card included in your package for specific terms and conditions, including the warranty period and coverage details.

For technical support, troubleshooting assistance, or any questions regarding your product, please contact the AYINO Official Store or your authorized reseller. Keep your purchase receipt or proof of purchase handy when seeking support.