XH-A158 Bluetooth 5.0 Audio Power Amplifier Board 5W×2

XH-A158 Wireless Bluetooth 5.0 Audio Power Amplifier Board

Upgrade your DIY speaker project with the XH-A158 Bluetooth 5.0 Audio Power Amplifier Board. This compact, high-performance amp board delivers crystal-clear two-channel stereo sound with a 5W×2 output, making it ideal for hobbyists, makers, and electronics enthusiasts who want wireless audio capability in a tiny footprint. Powered by the efficient PAM8403 chip, it connects seamlessly via Bluetooth 5.0 for stable, low-latency streaming from smartphones, tablets, and other Bluetooth-enabled devices.

Made in Mainland China.

Key Features

• Bluetooth 5.0 – Fast, stable wireless pairing with phones, tablets, and compatible devices
• 5W × 2 Stereo Output – Dual-channel audio for rich, balanced sound
• PAM8403 Chip – Efficient Class D amplifier chip with low heat and low noise
• DC 5V Power Supply – USB-compatible power input for easy powering
• 4× Signal Magnification – Boosts audio signals for fuller sound output
• Compact Form Factor – Only 5.6 cm × 4.3 cm; fits easily into custom speaker enclosures
• Mounting Holes – 38 × 35 mm installation hole spacing for secure fitting
• Bluetooth Status Indicator – LED flashes during normal operation for easy status monitoring
• Brand new, 100% quality-checked before shipping

Technical Specifications

What's in the Box?

• 1 × XH-A158 Audio Power Amplifier Board

Troubleshooting Tips

• Bluetooth won't connect? – The LED indicator should flash regularly during normal operation. A steady light or no light may indicate an issue with the Bluetooth module.
• Phone connects but PC doesn't? – If your phone works fine, the board is functioning correctly. Try uninstalling and reinstalling the latest Bluetooth driver on your computer.
• Audio stutters at high volume? – Check that your power supply provides adequate voltage and current. Also ensure your connected speaker's power rating is compatible with the 5W output.
• Background noise? – Some ambient electromagnetic noise is normal for amplifier boards. Try switching to a different power supply or speaker to isolate the source.

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Note: Please allow ±5–10 mm variance due to manual measurement. Actual product color may vary slightly from images depending on monitor settings and lighting conditions.

Learn more: ENERGY STAR product efficiency guidance

Frequently Asked Questions

Q: What power supply does the XH-A158 Bluetooth amplifier board require?

A: The XH-A158 amplifier board runs on DC 5V, making it compatible with standard USB power supplies and power banks. Make sure your power source can deliver sufficient current to avoid audio stuttering, especially at higher volumes.

Q: What speaker power rating is compatible with this amplifier board?

A: The XH-A158 outputs 5W per channel (5W × 2 stereo). For best performance and to prevent speaker damage, use speakers rated at or above 5W. Connecting speakers with a lower wattage rating at high volume may cause distortion or damage to the speaker.

Q: How do I know the Bluetooth is connected and working properly?

A: When the board is functioning normally, the onboard Bluetooth LED indicator will flash at regular intervals. If the light stays solid or does not illuminate, there may be a connection issue with the Bluetooth module.

Q: Can the XH-A158 connect to a laptop or desktop computer?

A: Yes, it can pair with computers that have Bluetooth capability. If your PC fails to connect while a smartphone connects successfully, the issue is typically with the computer's Bluetooth driver. Uninstalling and reinstalling the latest driver version usually resolves this.