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  • Amplifier IC: PAM8403
  • Operating Voltage: 2.5V-5V
  • Amplification Efficiency: 85%
  • Dimension(LxW): 21x18 mm
  • Load: 4 ohm or 8 ohm small speakers
  • Supports: USB, AUX, SD-Card, Bluetooth
  • Power: 5W
  • Input Voltage: DC 5V 
  • Size: 38x38mm
  • IC: PAM8610
  • Input Voltage: 7-15 V
  • Working Mode: Class D (PWM modulation type)
  • Power: 15W
  • Dimension(LxW): 30.5x25.5 (mm)
  • Connection Supports: Bluetooth/ USB/ AUX/ Memory Card
  • Output: 5W
  • Input Voltage: 5V DC
  • Size: 45x25
  • On board TDA2030A Audio amplifier Board
  • Mono channel 18W Power amplifier circuit design
  • On board horn socket
  • On board 10 k adjustable resistance, can adjust the volume of the amplification
  • On board power indicator light