[helloh3adfi]

Accidentally I plugged in a 2-pin cable the wrong side (notch showing inside). The IEMs still play normal. I hope nothing broke inside?

 

[pbui44]

Nothing should be broken, but you will notice that your music will start to sound odd, especially when you hear faint echoes in the background.

 

[castleofargh]

Zero danger for the drivers.