TPA3116D2+M18 Bluetooth 2.0 power amplifier

The work is as shown in the picture. I don’t have a casing for the time being. I will add it when I, the pigeon, have some free time. There are two 10W 4 ohm speakers at the back. I don’t add a preamp for tuning. Personally, I think it will be fine if there is sound.
The schematic diagram is as follows. It is designed with KICAD and uses a library loader. It cooperates with kicad, and the experience is very good.
The PCB is as shown in the figure, and the project is in the attachment.
Material description:
1. TPA3116D2 Uxin 11 pieces
2. M18 Bluetooth Uxin 8 pieces
3. Power chip: RY8310 Personally, I think the maximum input voltage of this chip is false Standard, I adjusted the output to 6.4V and used a se8550 to stabilize the voltage to 5V and then added magnetic beads to power Bluetooth. The Bluetooth was opened like a WIFI module.
4. Fish scale audio stand for audio stand
5. Switch small niuzi switch
6 . Use silicone grease and 11*11*5.5MM heat sink to hold it down
7. The 22D18 toggle switch used for the switch is side dial
8. The front stage also uses Weimar high frequency capacitor 1UF
9. The rear stage can have two 10W 4 ohm capacitors. Speaker
10. Turn on and off the POP sound using HACKLAB for processing