Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Does not work

Despite expert advice this Sunforce product is not a powerful enough tool to convert my wife into an AC/DC fan. It does not work. No matter how long I use this tool she, to this day, does not appreciate the classic rock & roll stylings of AC/DC. Classics like Big Balls, and Dirty Deeds Done Dirt Cheap have yet to hit home with her. I'll have to re-read the instruction manual... perhaps I'm using this device incorrectly.