I just got one of these beauties and it is huge! It is quite cool though, and simple. Just a horn driver and plastic tube intercepting the amp’s signal. After seeing one go for big bucks last week on feebay I have decided I’m going to be putting it up for sale, as my Voice Box does what I would need out of this and more, but it is quite interesting. Oh, and did I mention huge?!?! Anyway, if anyone else has some video, pictures, or reviews/opions of these hefty fellas, please share.