Hi kids. Just recently picked up one of these Amptron BKi810 machines.
Basically it's a small PC about the size of a dictionary. It can carry up to a 1GHz Coppermine P3
(With good cooling installed, obviously), 512MB of RAM, takes standard 3.5"/5 1/4" drives, and eats up about 100 Watts of power. This machine has a TV encoder built-in with SP/DIF out, S-Video out, 5.1 Speaker support, 10/100/Modem support, USB drives, and cost less than you think. (I got mine for $120 factoring in shipping charges, with a Celeron 433, 128MB of memory and a 10GB HDD) While it does not have a screen built-in, the overall horsepower of this box is comparable to those long gone $200 GallantWeb boxes, and since it's essentially a small PC, the expandability is better, if not in fact as good, as the GallantWeb boxes. Detailed docs on available "hacks" for the BKi810 is available on M. Tadachi's little page on the series.