I searched for ages and couldn't find anything useful. PJB and TecAmp do/did a 500w class D power amp in a sort of MB200 style enclosure which would have suited but unfortunately prohibitively expensive and extremely rare.
All others I found were built to fit in a rack case. Impractical for my needs and I'm guessing impractical for you also?
I think manufacturers are missing a trick here. If you can get a 1000w into a bass amp not much larger than a cigar case, why isnt the market flooded with tiny power amps? I'd buy one! It'd beat dragging around my 35kg C-Mark doodad. I have a tiny mixer, why not a tiny power amp aswell?
Truckstop