Okay, so I'm getting a Twin Famicom and I know the plug will work in American outlets for a while until I have to unplug it to make sure it doesn't burn out. The problem is that even if the guy is selling it with a 100 volt AC adapter, but it's not an official one, it's made by Sony.
Would this fry my system after extended use, or am I just better off getting an AC adapter from an original Famicom? (Are they even compatible?)