I bought this item to power a CD head unit (car style) in my pull out RV, worked great! My standard inverter (AC to DC) put out a very "dirty" power supply that was fed to the speakers. I was very happy when I installed this unit and found that the problem was gone, only clear/crisp sound was left, oh-oh-oh! I love the little fan on it to keep it cool. I'll keep an eye on this summer's performance and let you know if I run into any problems. So far it's a 5 star item.