Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Bad manufaturer

I have owned 2 of these power supplies and both have bought the farm. One of them blew 2 drives because of faulty voltage. Do not buy and ULTRA power supplies! Stay away! You can get an equivalent cooler master psu with 6 rails and much better power. I finally chunked my ultra and got a coolermaster 850watt and my computer is running so much better!