A power inverter, isn't that noisy? I have an opus solutions power supply. It's made for carputers, DC/DC (I think or whatever type of power cars produce...hehe I'm no electrician) power inverter with some extra features (like it will power th computer down if it senses your battery voltage dropping too low. But then again when I had my carputer, it was just the computer no playstation, so I guess you would need the inverter for that. btw if anyone wants that power supply I'm selling it.