Product Description
XH-A158 ultra-compact all-in-one Bluetooth amplifier board integrates PAM8403 power amplifier chip and Bluetooth 5.0 receiver, delivering 5W×2 clear stereo output. Powered by standard DC 5V, it can be directly powered by USB port, power bank or phone charger, extremely convenient for portable applications.
With 4× signal amplification and ultra-low power consumption design, it is perfect for building mini wireless speakers, toy audio modification and small USB-powered audio systems. Compact size and clear installation dimensions make it easy to install in various small enclosures, ideal for audio DIY beginners.
Technical Specifications
- Model: XH-A158
- Main Chip: PAM8403
- Bluetooth Version: 5.0
- Power Supply: DC 5V (USB compatible)
- Output Power: 5W×2 Dual Channel Stereo
- Signal Amplification: 4×
- Channels: 2.0 Stereo
- Product Size: 45×42×25mm
- Installation Hole Distance: 38×35mm
- Net Weight: 22g
Core Advantages
- ✅ **All-in-one design**: Integrates Bluetooth 5.0 receiver and PAM8403 power amplifier, no additional modules required
- ✅ **Standard 5V USB power supply**: Compatible with USB port, power bank and phone charger, extremely convenient
- ✅ **Bluetooth 5.0 technology**: Stable connection, fast transmission and low latency
- ✅ **Ultra-clear sound quality**: 4× signal amplification, delivers clear and natural stereo sound
- ✅ **Ultra-low power consumption**: Suitable for battery-powered portable devices
- ✅ **Compact size**: Easy to install in small enclosures and limited spaces
- ✅ **Simple operation**: Plug and play, no complex setup required
- ✅ **Affordable and reliable**: Perfect for entry-level audio DIY projects
Simple Operation Guide
1. Connect the power input to a DC 5V power supply (USB port recommended)
2. Connect the speaker terminals to your 4Ω/8Ω speakers, paying attention to positive and negative polarity
3. Enable Bluetooth on your device, search for and connect to the amplifier board's Bluetooth name
4. Play music on your connected device and enjoy wireless audio
⚠️ IMPORTANT USAGE WARNINGS
1. **Only supports DC 5V power supply**, do not use voltage higher than 5.5V to avoid damaging the module
2. Never short circuit the speaker output terminals to each other or to ground
3. Always connect speakers first before powering on the amplifier board
4. Recommended speaker matching: 4Ω/5W or 8Ω/3W speakers
5. Keep the amplifier board away from metal objects to avoid affecting Bluetooth signal
Applicable Scenarios
- DIY mini portable Bluetooth speakers
- Toy audio modification and upgrade
- USB-powered small desktop speakers
- Portable audio device modification
- Small multimedia audio systems
- Entry-level audio DIY projects
Package List
1 × XH-A158 PAM8403 Bluetooth 5.0 5W×2 Stereo Amplifier Board
Notes
1. Slight 1-2mm size deviation exists due to manual measurement
2. Item color may have minor differences influenced by different monitor displays and lighting conditions
3. Actual Bluetooth transmission distance may be reduced by walls or other obstacles
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