The Dreamcast Dreamphone

Up until today I'd never heard of the Dreamcast Dreamphone, and I'd wager many other people haven't either. What meagre information there is on this little-known device can only be accessed through liberal use of the Way Back Machine; but I'll explain how I came to find this odd and fascinating contraption before explaining what I've pieced together about it.

Sorry. Wrong number.

Are you sitting comfortably? Then I'll begin. Twas a dark and stormy evening and I was randomly browsing the internet for cheap Dreamcast games, when I happened across the following listing at US website eStarland.com. At first I thought I must be looking at an April Fools' hoax or something because even though I consider myself to be quite well versed in Dreamcast peripherals, the Dreamphone is something I've never, ever heard of.

After finding this item (it's out of stock by the way, and is likely to be so for some time to come forever), I did some Googling but could find barely any information on it. There are thousands of references to a board game of the same name (see above), and a couple of forum threads from 2004 and 2007 where people seemingly stumbled upon the Dreamcast Dreamphone in exactly the same manner as I did...and virtually nothing else, anywhere.