# Sixth Lichuang Electric Competition#Mini small Bluetooth amplifier

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* 1. Introduction to project functions

   This is a small power amplifier, and the sound source can come from the audio line signal input or Bluetooth. A typec port is needed to power it. After testing, the sound quality of this small power amplifier is quite good. There is almost no distortion when the volume of the mobile phone is adjusted to the maximum. It works well as a small home audio system.

*2. Project attributes

First public, original

* 3. Open source agreement

GPL3.0

Please fill in during the competition stage↓

*4. Hardware part

  Using PAM8406 as the power amplifier chip, there are multiple capacitors on the power amplifier board (2 470uF, 2 100uF, plus other small capacitors) for filtering to enhance the sound quality (actually, I don’t know if it has any effect, but the sound quality is indeed good). The isolation capacitor uses a 1uF film capacitor, which is an imported capacitor sold in Lichuang Mall. The overall circuit board has a symmetrical layout, and the height of the device is taken into consideration. I think the appearance is very handsome.

*5. Software part

 No programming required

*6. BOM list

*7. Contest LOGO verification

* 8. Demonstrate your project and record it as a video for uploading

More details: https://diy.szlcsc.com/posts/06c94d90c2c447dfbd9ed7339ff4a5b1