Introduction
The ATUOTIN XY-AP50L is a compact and versatile 2x50W dual-channel digital HIFI audio power amplifier board. It features Bluetooth 5.0 connectivity, AUX input, U disk playback, and a USB sound card function, providing high-fidelity sound quality for various audio setups. This manual provides detailed instructions for setting up, operating, and maintaining your amplifier board.
Image: Front view of the amplifier board highlighting USB Play, AUX Import, Phone APP control, and HI-FI sound quality features like vigorous bass and high transparency.
Safety Information and Precautions
- Keep the power amplifier board as far away as possible from WiFi signals (routers) to prevent interference.
- The recommended power supply voltage is DC 5-24V. Exceeding 26V will damage the chip.
- The power supply current is recommended to be above 2A.
- Speaker cables should not be excessively long; ensure they are within 1 meter for optimal performance.
- Pay attention to static electricity protection. Always release static electricity from your hands before touching the amplifier board to prevent damage to the chip. Bluetooth-compatible chips are particularly sensitive to static electricity.
- It is recommended to use speakers with a rated power of 40W and above to prevent the speakers from overheating or burning out.
Product Overview
The XY-AP50L amplifier board integrates multiple features for a comprehensive audio experience. Key components and their functions are detailed below.
Features:
- Mobile phone APP control (Xin Yi Lian APP for Android/iOS).
- Bluetooth 5.0 connectivity for wireless audio streaming.
- AUX input for wired audio sources.
- U disk playback for direct music playback from USB storage.
- USB sound card function for enhanced computer audio output.
- High-fidelity sound quality with vigorous bass and high transparency.
- Rotary encoder for stepless volume tuning and one-key start/stop.
- 5.5/2.1mm DC power socket, compatible with 5.5/2.1 and 5.5/2.5 plugs, includes a DC adapter.
- Protection mechanisms: Power supply reverse connection, short circuit, self-recovery overheating protection.
Image: Rear view of the amplifier board, highlighting the Sinilink logo and the high-quality copper DC plug.
Image: Visual guide to product features, including the Sinilink APP, rotary encoder controls (short press for play/pause, long press for on/off), Type-C adapter for U disk/sound card, and the 5.5/2.1 DC power socket.
Setup Instructions
1. Power Connection
- Connect a DC power supply (5-24V) to the DC 5-24V input port on the board. Ensure the power supply current is above 2A.
- The board uses a 5.5/2.1mm socket and is compatible with 5.5/2.1mm and 5.5/2.5mm plugs. A DC adapter is provided for convenience.
2. Speaker Connection
- Connect your passive speakers to the SPKL (Left) and SPKR (Right) output terminals. Ensure correct polarity (+/-).
- The amplifier supports speakers with impedance of 4Ω, 8Ω, or 16Ω and a rated power of 30W-200W.
- Keep speaker cables short, ideally within 1 meter, for optimal sound quality.
3. Audio Input Options
- AUX Input: Connect an audio source (e.g., smartphone, MP3 player) to the 3.5mm AUX IN jack.
- USB Audio: Connect a USB flash drive (U disk) to the USB AUDIO port for direct music playback.
- USB Sound Card: Connect the board to a computer using a data cable via the USB AUDIO port to use it as an external sound card.
Image: Connection diagram illustrating DC power input, USB audio input/output, speaker terminals (SPKL, SPKR), 3.5mm AUX input, and 3.5mm audio output.
Operating Instructions
1. Power On/Off and Volume Control
- Power On/Off: Long press the rotary encoder knob to turn the amplifier board on or off.
- Volume Adjustment: Rotate the encoder knob clockwise to increase volume and counter-clockwise to decrease volume.
- Play/Pause: Short press the rotary encoder knob to play or pause audio playback.
2. Bluetooth Mode
- Ensure the amplifier board is powered on.
- On your mobile device, search for Bluetooth devices and select the amplifier board (usually named 'Sinilink' or similar).
- Once paired, you can stream audio wirelessly from your device.
Image: Mobile application interface demonstrating Bluetooth control and various input selections (AUX, U Disk, USB Sound Card).
3. U Disk Playback Mode
- Plug a U disk containing MP3 or WAV format music files into the USB AUDIO port.
- Open the Sinilink APP on your mobile device.
- In the APP, switch to the "U disk" mode. A prompt sound will indicate successful mode change, and music from the U disk will begin playing.
4. USB Sound Card Function
- Connect the amplifier board to your computer using a data cable via the USB AUDIO port.
- Open the Sinilink APP on your mobile device.
- In the APP, click to switch to "sound card" mode. A prompt sound will confirm the switch.
- Your computer should automatically recognize the amplifier as a sound card. If not, you may need to manually select it in your computer's sound settings.
- You can now play audio from your computer through the amplifier board.
Image: Diagram showing the amplifier board connected to a laptop via USB, demonstrating its use as a computer sound card.
5. Mobile APP Control
- Download the "Sinilink" application from your mobile device's app store (Apple App Store or Google Play Market).
- The app provides a visual interface for controlling playback modes, volume, and other functions of the amplifier board.
Specifications
| Attribute | Value |
|---|---|
| Product Name | Mini 50W+50W stereo Bluetooth-compatible digital power amplifier board |
| Product Model | XY-AP50L |
| Supply Voltage | DC: 5-24V |
| Bluetooth Version | 5.0 |
| Transmission Distance | 15 meters (unobstructed) |
| Number of Channels | Left and right dual channels (stereo) |
| Adapted Speakers | 30W-200W (4Ω, 8Ω, 16Ω) |
| Protection Mechanism | Power supply reverse connection protection, short circuit protection, self-recovery overheating protection |
| Product Weight | 77g |
| Product Size | 52x52x25mm |
Output Power vs. Supply Voltage:
- 12V-8Ω: 15W+15W, 4Ω: 20W+20W
- 15V-8Ω: 18W+18W, 4Ω: more than 30W+30W
- 19V-8Ω: 32W+32W, 4Ω: more than 45W+45W
- 24V-8Ω: 40W+40W, 4Ω: more than 50W+50W
Troubleshooting
- No Sound Output:
- Check power supply voltage (DC 5-24V) and current (recommended >2A).
- Ensure speakers are correctly connected with proper polarity.
- Verify the audio source is playing and connected correctly (Bluetooth, AUX, USB).
- If using USB sound card, ensure the mode is selected in the APP and the computer recognizes the device.
- Distorted Sound:
- Reduce volume from both the amplifier and the audio source.
- Ensure the power supply output is greater than the amplifier's output power.
- Check speaker impedance and power rating to ensure compatibility.
- Keep speaker cables short.
- Bluetooth Connection Issues:
- Ensure the amplifier is not too close to WiFi routers or other sources of interference.
- Try unpairing and re-pairing the device.
- Ensure your mobile device's Bluetooth is enabled and visible.
- Amplifier Overheating:
- Ensure adequate ventilation around the board.
- Verify that the adapted speakers have a rated power of 40W or above.
- Check for short circuits in wiring.
Maintenance
- Keep the amplifier board clean and free from dust. Use a soft, dry cloth for cleaning.
- Avoid exposing the board to moisture, extreme temperatures, or direct sunlight.
- Periodically check all connections to ensure they are secure.
- Store in a cool, dry place when not in use for extended periods.
User Tips
No specific user tips were available from provided reviews or Q&A content.
Warranty and Support
For warranty information or technical support, please refer to the seller's policies or contact the point of purchase. Ensure you retain your proof of purchase for any warranty claims.
For additional guides and documents, you may refer to the User manual (PDF) if available from the seller.