I DO have one of those in a closet. Last used to power little speakers next to a little TV in a bedroom system (TV speakers sucked).
It is a 10.1 with Tweak Kit II mods by the factory with the standard 12V 3A AC/DC adaptor in silver. I even have the original Audio Magnus receipt from 2007. And as bizarre as it may sound I also have (haven't seen it in a while, but I'm sure it's in a closet) the battery power supply (with the battery long removed, but you could install a new one). Not sure if you'd be interested in that too?
Lemme know what you think it's worth and maybe we can work out a deal. I can send you photos if you like.
Neil
