This compact AIYIMA amplifier board delivers 3 W × 2 stereo output and supports Bluetooth audio streaming. It’s ideal for low-voltage, space-constrained audio projects such as portable speakers, embedded sound systems, and STEM kits.

Specifications

• Amplifier Type: Class D
• Bluetooth Version: 4.2 (receiver only)
• Output Power: 3 W × 2 (stereo)
• Speaker Impedance: 4 Ω recommended
• Operating Voltage: 3.3 V–5 V DC
• Audio Input: Bluetooth only (no AUX or line-in)
• Audio Output: 2-channel speaker terminals
• Dimensions: ~45 mm × 30 mm
• Mounting: PCB holes and solder pads
• Indicators:
  - Power LED
  - Bluetooth pairing LED
• Packaging: Bare module (no enclosure)

Features

• Bluetooth audio streaming for wireless speaker integration
• Compact and low-power design for portable applications
• Ideal for DIY Bluetooth speakers, embedded audio, and classroom projects
• Common use cases:
  - STEM audio amplifier kits
  - Wireless speaker upgrades
  - Battery-powered sound systems
  - Bluetooth audio bridges for legacy devices