Instruct: Classify the given Amazon review as either positive or negative.
Query: It lasted about 30 minutes past the warranty

I had this amp set up to power a distributed stereo signal to feed the rest of the house for background music. While it worked for the warranty period reasonably well, it did shut itself off for reasons that never were readily apparent.Then one day, it tripped off never to come on again. Onkyo service is an exercise in all that is bad with customer service for electronic equipment. If it's out of warranty by even a day, the nature of the discussion with the service tech becomes akin to wading through sludge.Bottom line, it would cost more to fix it than the cost of a new one. It is a door stop and I bought two Audiosource amps and am quite happy, thank you. I am done with Onkyo.