Hey Zuhair!
There could be a few reasons why the audio on your drum set has become distorted. The first thing I would suggest would be to adjust the volume switch on the back of the drum set to a different setting. If that doesn’t work, then I would suggest trying change out your batteries. You would be surprised how many issues a fresh set of batteries can solve. If you’re still having problems after that, then you will most likely have to replace your speaker or volume switch. These steps are a little more involved, and will require the use of a soldering station. If you’re feeling adventurous, you can view step by step instructions for this process in the [[Vtech Kidibeats Drum Set Troubleshooting|Vtech Kidibeats Drum Set Troubleshooting Guide]].