Did something similar to OP. I was writing a controller for a streaming system and managed to accidentally set the volume to 100. This was with speakers not hea

Did something similar to OP. I was writing a controller for a streaming system and managed to accidentally set the volume to 100. This was with speakers not headphones. I had to pull the power plug to stop it. Just about gave me a heart attack. The bug was a feedback loop in the volume control code that somehow ramped the volume up without any way to stop it. After that I always tested with a physical volume control later in the audio chain, with the volume set to a medium level.