I have a new amplifier that has tripped my 20 amp arc fault circuit breaker at startup. But this has happened only 3/10. The other 7 times it started up fine and the three times it tripped the circuit breaker, I was able to turn on the amp without any problems after resetting the breaker. And the three times it tripped the breaker were all when using the power button on the unit. I turned on the amp a number of times from the remote without any problems.
The amp is a Hegel H390. The circuit breaker is 12 years old.
Anyway to find out if it is the amp or the circuit breaker without hiring an electrician?