For HIFI friends around the world, I love old chips the most. And we will never accept surface mount resistors and capacitors during production. Because for retro sound, there is nothing more perfect than direct insertion resistors and capacitors. I have produced almost all the chips that DAC can find. I spent a lot of money buying chips. But I think it's very worthwhile. Because I like music. I am looking for music that can inspire inner emotions. I also made AD7846 while completing the production of AD7546. I like the sound of parallel chips. I accept music with emotions. I like the speed of parallel port chips.Now share with everyone.You will get his PCB at a very low price. But he is in China.If you are a friend of the European Union. Please provide the IOSS number, which consists of IM and 10 digits. The mailing time is about 10 days. All PCBs consist of four parts: audio input board, format conversion board, DAC decoding board, and power board. You can play app content through a Bluetooth chip (purchased in China, manufactured in Shenzhen), or use CS8412 coaxial to play CD content. COMBO384 can also be used to connect to a computer for playback, and there is also an external input IIS interface for connecting to Philips turntable playback. I will provide Taobao product connections. You can use Taobao's overseas warehouse to purchase. If you need assembly instructions and BOM list, please send an email: 410746700@qq.com,My store address: hikvocal.taobao.com