Here's a demonstration of the cd player working. I used an MP3 CD and I have also used .wav CDs in the past. Both turntables work fine.
As I mentioned the firmware are totally updated (no easy task)
This let's you scratch CD without warping the sounds and the CDs can use any bitrate .MP3 or .Wav
Also you can see there are no problems with the key messing up with key lock on or off even when scratching or changing the pitch/tempo.
![](https://s2.save4k.ru/pic/5QBYRWicses/maxresdefault.jpg)