If you have a premium sound system the installers may hve forgotton to bypass the factory amp. Sending a high level signal though that amp = BAD. It is possible that it lasted for a couple of days. Did you smell anything burning or see any smoke? My friend forgot to bypass his amp and it smelled pretty bad. BTW the amp bypass kit if you don't have one already is pretty cheap, but i would suggest taking it back to those retards and tell them to fix it. the install should be warranteed for at least 90 days
