![](https://ae03.alicdn.com/kf/S67834d722ff14d19aad086d9aca453fch.jpg)
Size:280x200
1. The power module is added, so that the power supply of each module is independently regulated
2. Added a delay protection circuit, the power-on will delay for a period of time and then start the output, which can better protect the rear stage
3. Optimized the layout of power supply and ground wire, which greatly improves the sound quality
4. Re-defined the input and output interface, which is more suitable for mounting the case
5. Compatible with each module of the third version
6. Added I2S input function, the board can directly connect three-wire I2S signal, (LRCK, BCK, DATA, GND)
![](https://ae03.alicdn.com/kf/Seba9a25d03324466bfacd6fe9265d64eP.jpg)
Output protection relay![](https://ae01.alicdn.com/kf/S18e61249a9a04da6a5553ae96392fb95Q.jpg?width=1024&height=666&hash=1690)
CS8412+SAA7030![](https://ae01.alicdn.com/kf/Sa4353d8f17de4a708186ac649c0ee83fA.jpg?width=1024&height=683&hash=1707)
Power input
![](https://ae01.alicdn.com/kf/S14f75672ecc745beb5fef863a6b07e7fh.jpg?width=1024&height=714&hash=1738)
![](https://ae01.alicdn.com/kf/S353cf5ce1fa1470290c569efd0c52f7aD.jpg?width=1024&height=834&hash=1858)
![](https://ae03.alicdn.com/kf/S434ecee02b224b6ca77b18f3398587c3s.jpg)
![](https://ae01.alicdn.com/kf/S0a6306decce74856bf385e7c7defda922.jpg?width=1024&height=683&hash=1707)