As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED ELECTRICAL SMOKE IN CABIN WITH THE SOURCE NEAR THE EMERGENCY EXIT. EMERGENCY DECLARED AND AN UNSCHEDULED LANDING PERFORMED. MX CREW REPORTED FINDING THE CABIN AUDIO CIRCUIT BREAKER POPPED. SUBSEQUENTLY FOUND THE CABIN AUDIO AMPLIFIER SMOKING. AMPLIFIER REPLACED AND ALL OPS CHECKS NORMAL.