Do the microphones and audio amplifiers used in hotels occasionally explode during all-night meetings?

Don’t be too exaggerated. This is a power amplifier, not a bomb. No matter how you use it, it will not explode.

Even in the worst case scenario, the power amplifier board is burned out and thick smoke comes out. But in that case, you should shut down the phone quickly. If the hotel's electrical safety is better, the overcurrent device will trip and cut off the power supply. Don't scare yourself.