Big Chris:FMJ - Full Metal Jacket, high end
DIVA - Digitally Integrated Video Audio (Or similar), entry level.
...Or at least it was.
DIVA is now for A/V equipment. FMJ is now for everything Hi-Fi.
Yep, my FMJ feels like it originally cost almost £2k (not that I paid anything like that much!). Very well made and just the noise the draw makes when you press "load" gives you the idea that it's not budget equipment.