HIFIDIY LIVE XY-D50H Bluetooth 5.0 Digital Power Amplifier Board

1. Product Overview

The HIFIDIY LIVE XY-D50H is a 2.0 channel digital power amplifier board designed for home audio applications. It features Bluetooth 5.0 connectivity, AUX input, and USB audio playback, delivering a peak power output of 2x50W. This module incorporates the TPA3116 chip for high-fidelity audio and includes multiple protective functions to ensure stable and safe operation. Unique features include two distinct spectrum modes and a volume display function, enhancing the user experience.

Image 1.1: Overview of the XY-D50H amplifier board, showcasing its Bluetooth 5.1, AUX input, USB audio capabilities, 50W+50W output, TPA3116D2 chip, Sinilink-APP support, and music rhythm light features.

2. Setup Instructions

2.1 Unpacking and Inspection

Carefully unpack the amplifier board and verify that all components are present. The package typically includes the amplifier board, a screwdriver, and a DC adapter.

Image 2.1: Contents of the shipping package, including the amplifier board, screwdriver, and DC adapter.

2.2 Power Connection

Connect a DC 5-24V power supply to the DC input port (5.5mm*2.1mm plug size) on the amplifier board. Ensure the power supply meets the specified voltage and current requirements (e.g., 5A for optimal performance).

2.3 Speaker Connection

Connect your passive speakers to the audio output terminals. The board supports 2.0 stereo output. Ensure correct polarity (+ and -) for each speaker channel (Left and Right) to avoid phase issues.

2.4 Audio Input Connection

The amplifier board supports multiple audio input methods:

• AUX Input: Connect an audio source (e.g., smartphone, tablet, PC) using a 3.5mm audio cable to the AUX IN port.
• USB Audio Input: Connect a USB flash drive to the USB AUDIO port for direct playback of WAV, FLAC, APE, and MP3 files.
• Bluetooth Input: For wireless audio streaming, refer to the 'Operating Instructions' section for Bluetooth pairing.

Image 2.2: Detailed diagram illustrating the various input ports (DC 5-24V, AUX Audio Input, USB Audio Input) and audio output terminals (SPKL, SPKR) on the XY-D50H amplifier board.

3. Operating Instructions

3.1 Multifunctional Volume Knob

The central knob on the amplifier board serves multiple functions:

• Rotate: Adjusts the volume level.
• Click (Short Press): Play/Pause audio playback.
• Double Click: Skips to the next track.
• Long Press: Powers the unit ON/OFF.
• Three Clicks: Switches between audio input modes (Bluetooth / AUX / USB flash drive).

Image 3.1: Illustration of the multifunctional volume knob and its various controls, along with details on the music rhythm light settings.

3.2 Bluetooth Connection

1. Turn on your mobile phone's Bluetooth.
2. Search for the device named "XinYi" in your Bluetooth settings.
3. Connect to "XinYi". The blue LED on the amplifier board will flash quickly during pairing and remain solid once connected.

3.3 Sinilink APP Usage

The amplifier board can be controlled via the Sinilink mobile application.

1. APP Download: Search for "Sinilink" in your mobile app market or App Store and install it.
2. APP Connection:
   • Ensure your mobile phone's Bluetooth is ON and location positioning is enabled.
   • Open the Sinilink APP.
   • Navigate to the operation interface, click the yellow dot, then click "Bluetooth device".
   • Search for Bluetooth devices and connect to "Sinilink-APP".

Note: When using the APP, you must grant all necessary permissions to avoid compatibility issues.

Image 3.2: Step-by-step guide for connecting the amplifier board to the Sinilink APP, including Bluetooth pairing and app interface navigation.

3.4 Spectrum Lights and Volume Display

The amplifier module features two distinct spectrum modes and a volume display function. Users can toggle between these three display modes using the buttons located on the side of the module. A short press adjusts the light brightness (four levels), and a long press switches between the two music rhythm display modes.

4. Maintenance

To ensure the longevity and optimal performance of your XY-D50H amplifier board, follow these maintenance guidelines:

• Keep Dry: Avoid exposing the device to moisture or liquids.
• Temperature: Operate and store the amplifier in a moderate temperature environment. Avoid extreme heat or cold.
• Cleaning: Use a soft, dry cloth to clean the surface of the amplifier board. Do not use harsh chemicals or abrasive materials.
• Ventilation: Ensure adequate airflow around the device to prevent overheating, especially during prolonged use. The open-sided design aids in cooling.
• Protection Functions: The amplifier board is equipped with Over-voltage Protection, Under-voltage Protection, Over-heat Protection, and Short-circuit Protection. These features are designed to prevent damage to the board and connected components. If any protection is triggered, disconnect power, check connections, and allow the unit to cool before restarting.

5. Troubleshooting

If you encounter issues with your XY-D50H amplifier board, refer to the following common problems and solutions:

• No Power:
  • Ensure the DC 5-24V power supply is correctly connected and functioning.
  • Check if the power adapter is securely plugged into both the wall outlet and the amplifier board.
  • Verify that the power knob is long-pressed to turn the unit ON.
• No Sound Output:
  • Confirm that speakers are correctly connected to the audio output terminals with proper polarity.
  • Check the selected audio input mode (Bluetooth, AUX, USB) using the three-click function on the volume knob.
  • Increase the volume using the rotary knob.
  • Ensure the audio source is playing and its volume is not muted or too low.
• Bluetooth Connection Issues:
  • Make sure the amplifier board is in Bluetooth mode (blue LED flashing).
  • Ensure your mobile device's Bluetooth is enabled and within range (within 10 meters).
  • If previously paired, try unpairing "XinYi" from your device and re-pairing.
  • For APP control, ensure location services are enabled on your phone and you are connecting to "Sinilink-APP".
• Distorted Sound:
  • Reduce the volume level on both the amplifier and the audio source.
  • Check speaker impedance; ensure it is compatible with the amplifier's output.
  • Verify the power supply is stable and provides sufficient current.

6. Specifications

Image 6.1: Detailed technical specifications for the XY-D50H Bluetooth audio power amplifier.

7. Warranty and Support

For warranty information or technical support, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase. Detailed warranty terms may vary by region and retailer.