You don’t need clipping for a power surge to cause damage to gear but it’s possible and perhaps even likely clipping occurred as a result if you heard a sound from the speakers as a result of a power surge.
The issue is the power surge. Avoid those in any way possible like turning off and even unplugging gear during thunder storms.
The issue is the power surge. Avoid those in any way possible like turning off and even unplugging gear during thunder storms.