I purchased several of these units for powering car audio systems on 120VAC and have been very pleased with their performance and price. They run cool with a 5 amp draw and the power seems cleaner than a competitor's unit that was $10 more. I know this because the competitor's unit would cause the car audio systems to reset and act unpredictably. Putting the Sunforce unit on the same car audio system corrected the problem. They have been running continuously for going on two months now and no hiccups of any kind. Considering I could not find any alternative product for less after 20-30 minutes of web search, I am very pleased.