Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Burnt out in 1 week

Worked right out of the box. Easy installation, and great features! Bluetooth syncing wasn't too bad either. I had a chance to test out just about all the features this stereo had to offer, and it all seemed to work just fine.About a week after installation and moderate use, I caught a whiff of burnt electrical components. I thought it might have someone burning trash as I drove past some houses. The next time I turned on my truck, no sound came out of the speakers. I checked all fuses, connections, and spent a few hours trying to find out anything that was wrong. Just as a sanity check, I plugged my old stereo back into the truck to make sure there wasn't anything wrong with the truck hardware. Sure enough, the old device worked fine. The Dual stereo system was defective. Returning to Amazon for a refund.