Or perhaps he means
this 48K:
GuitarCenter
The original 48K is a dicontinued older design built in the USA.
The Digimax FS and D8 are newer designs with newer preamps and converters, manufactured in China.
I have an FS, and drums are what I use it for primarily. Many smaller studios use the FS for drums. It is a good performer for the price.
The D8 has the same preamps as the FS, with less features. If you don't need the extra features of the FS, the D8 will save you some money.