XH‑A158 Dual‑Channel Bluetooth Amplifier Board (PAM8403, 2×5 W, Bluetooth 5.0, 5 V DC)
Description:
Compact and energy-efficient stereo amplifier module featuring Bluetooth 5.0 input and a PAM8403 Class‑D amplifier chip. Designed for DIY portable speaker projects, delivering clear stereo sound with minimal power consumption.
Key Features:
- Dual-channel stereo: 5 W per channel (at 4 Ω, 5 V input)
- Compatible with 4–8 Ω speakers
- Bluetooth 5.0 audio input with automatic pairing
- PAM8403 amplifier IC for high-efficiency Class‑D operation
- Small, lightweight module ideal for DIY wireless speakers
Technical Specifications:
| Feature | Specification |
|---|---|
| Amplifier IC | PAM8403 Class‑D |
| Input Voltage | DC 5 V |
| Output Power | 2 × 5 W (into 4 Ω) |
| Bluetooth Version | 5.0 |
| Efficiency | Typically >90% |
| Frequency Response | 20 Hz – 20 kHz |
| Board Dimensions | ~45 × 42 × 25 mm |
| Mounting Hole Spacing | ~38 × 35 mm |
| Product Weight | ~22 g |
Usage Notes:
- Use a stable 5 V DC power supply (at least 1 A) for optimal performance.
- Connect left and right speakers (4 Ω or 8 Ω) to the respective outputs.
- Bluetooth pairing occurs automatically when powered on.
- Ensure adequate ventilation when using at high volumes for extended periods.
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