Which shopping mall in Zhengzhou has DD DTS decoder (standard home double decoder)?

Try the home appliance market next to Dong Building Materials. Some are unlikely, but there will never be other markets.

Many people sell this online. 2. You can buy it in 300 yuan. How can it be second-hand? A friend of mine bought it online.

But then again, basically only one' crystal' chip is used.

In addition, the brands you mentioned, hehe, personally, are just furniture that can make sounds.

As for certification, forget it. As far as I know, these decoders are all purchased overseas outdated chips and assembled by small factories in Shenzhen. But this chip is really good in the era of 5. 1.