[Product tested] WonderSwan headphone adapter

I haven't been playing with Game Boys much lately, switching to WonderSwans. Headphones can't be plugged in directly; you need an adapter.
I checked on Xianyu (a Chinese online marketplace), and there were quite a few. Original ones were too expensive, and DIY ones were okay, but I didn't like their looks.
After researching, I basically understand that a WonderSwan headphone adapter is just a digital-to-analog converter, converting the WonderSwan's digital signal into an analog signal.
So, I designed the board according to the datasheet. The first few boards I made had some issues, mainly with the HDMI plug selection. If it was too long, it would protrude too much from the device; if it was too short, it wouldn't make contact.
This is probably the third version, and it works perfectly now.
This open-source project doesn't plan to release the schematics or PCB layouts, only the Gerber manufacturing files from LCSC, because I saw boards on Xianyu being sold after various modifications.
Just use them directly. Choose a 5x5 QR code; otherwise, it will look bad for custom coders.
Try not to change the HDMI plug, as I've already specified the size; too long will look ugly.
The TDA1308 is not easy to find, but the domestically produced C2895052 can be used as a substitute.
I have removed all the silkscreen printing; just solder according to the picture.