If the audio is distorted on your Stockwell II, there are several likely causes and troubleshooting options you can attempt:
1. Volume is set too high on the audio source.
Turn down the playback volume on the audio source
2. The audio stream or audio file is of poor quality.
Try another audio file or music player
3. Volume is set too high on the Stockwell II speaker.
Lower the volume on the speaker
4. Too much bass/ treble on the speaker.
Lower the bass/ treble on the speaker