Who's got a blackface Stewart UDP-1?? I've got the silverface model UDP-1A that uses the internal battery. But I could swear I saw a black one, possibly a later model, that also had a jack for a PS-1 external power supply. Did they make one like this or am I confusing it with something else? I'd like to pick one up before the prices go through the roof like the blackface Fenders. 