I bought this one for $20So if you pay anymore for the same thing, you just got jipped! btw, mine does not use any power outlet, or batteries, its amazing. but it also doesn't use a remote, so if you are a lazy bastard then its not for you (80% of xbox-scene just got wiped out)
these devices are pass through devices, they don't typically convert signal. mine doesn't actually use any power at all