Mini Efficient Digital Amplifier 3W+3W Dual-Channel Stereo Amplifier Board Class D Amplifier Module Support 5V USB Power Supply

  • Item ID #090153

List Price: $5.00 Our Price: $3.49Save 30%

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It is a Digital Amplifier 3W+3W Dual-Channel Audio Amplifier Board, Input Voltage: DC 3.6v~5.5V(Support 5V USB Power Supply) Suitable for for MP3/4/Mobile Phone/laptop external speakers etc

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  • Efficient digital amplifier chip, Built-in standby electronic switch, built-in high-gain buffer amplifier, built-in short circuit protection.
  • Input Voltage: DC 3.6v~5.5V (the chip will burn out if more than 5.5V.)
  • Output power: 3W +3 W (4 ohms)
  • Signal to Noise Ratio: 90dB
  • Efficiency:> 90%
  • Maximum closed-loop gain:24DB


  • positive and negative power supply can not be reversed, the supply voltage can not exceed 5.5V, or it would burn out the IC.
  • On-chip high-gain buffer, can not change any component. Improper parameters would lead to IC damage.
  • Please try to use the input line with shield wire, to removing clutter and current sound.
  • CMOS BTL Driver Output, Left and right negative of speakers can not be connected together, 4 speaker wire is completely independent, Not allow connect together.
  • if use with computer, powered by the computer USB, that would caused current sound. because the audio and USB common ground, so the current sound is unavoidable.

Package Includes:

  • 1 x Mini Amplifier
  • 4 x Cable

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