Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Thought they were great, but...

First pair lasted about 30 days, left channel stopped working. Got them replaced under warranty, worked fine for a while. I didn't use them for a few months, but when I did try to use them again, they were stone dead, Nothing, nada. They were never subjected to high volume or other abuse, they just quietly died in their sleep. Save your money, buy something else!