The Emerson Arcadia has got to be one of the most underrated systems on earth. It also tends to be one of the least collected systems out there--sometimes I think me and JerryG are the only ones collecting for it.
The graphics are a cross between Odyssey^2 and Intellivision, if you can picture it. The cartridges are shaped the same way as Atari 2600 ones, but are about the size of Beta videocassettes. The slot is identical to the one used with the APF MP1000/Imagination Machine, although they are not compatible.
If you notice, the controllers look like Intellivision controllers. True, it's the same design, but it's far superior. The side buttons have a light touch, while the disc has a stick attached which can be screwed in or removed. And if you're wondering, yes, they accept overlays.
Strangely enough, the power supply is 12V. Luckily, when I got mine I had a universal supply that would do 12V. It also has two outputs(or are they inputs) on the back of the unit, on the left and right sides. What are these for? I certainly haven't figured it out.
Since this system is somewhat rare and not many people collect for it, there isn't much information about it. When I get the time, I plan on putting together at least all the information I have found out about it, which isn't much, as well as reviews of a few games.