The ICs from cyrustek. ES51919/ES51920
Ha..ha.. thats a great finding ! Thanks !
From that links, the Mastech's pcb shot like below showing a quite resemblance of that de-5000 board isn't it ?
![](http://www.crystalradio.cn/bbs/attachments/month_1110/1110061455f01a7d1fc453e8c4.jpg)
![](http://www.crystalradio.cn/bbs/attachments/month_1110/11100614539387db3d796f2dd4.jpg)
Sorry, was that a trade secret? ![Cheesy :D](https://www.eevblog.com/forum/Smileys/default/xcheesy.gif.pagespeed.ic.KPzuH4J-TG.png)
Naah.. nothing to worry about, especially with these days product that are using commodities off the shelf chips, its just matter of time, people will discover what they're using.
Custom asic is the only way to prevent people to peek around, but that will be another pricing league.