Interesting, but it looks very expensive. We shall see.
"Maybe this world is another planet's hell?" - Aldous Huxley
Very cool, it especially makes more sense to have a rack style super-processor (a la axe FX) for bass considering it's more commonly DI'ed for recording or to a PA for shows than guitar.
Just get one of these and plug into a non powered 3 way Cabinet that has Flat Frequency Response.
Ibanez BTB 1006 Fretless and 405 (no Barts)
456 & 455(w/Barts)
Genz Benz NeoX400 112T & NeoX 112T cab.
Digitech BP-8 (x2)
Yamaha PB-1
Boss: SYB-5, PS-2, OD-20, EQ-20, PH-3,BF-3, CE-20, DD-20
Morely A/B
If I were to be picky, I'd prefer that the Multibass would be either 2Ohm capable, or just a preamp. Kinda annoying how there's so little 2Ohm amps on the market.

That being said, I may actually consider this. Slap it through a nice class D power amp and flat response speakers... Boom!
DARK_MATTER, Instrumental Post-Metal from Ireland

Ibanez BTB 405QM
Ashdown PM600 - Peavey TVX 4x10
Russian Big Muff

Fender Jim Root sig
'99 Stagemaster 7-string
Yamaha F310
Hughes & Kettner Warp 7 w/4x12
Just waiting to see the price, I had a go on the 2x10 Markbass combo, at over £900 I considered it a bit expensive.

I went through Bass Pod XT pro some years ago and soon got over it, nice toys but not really practical or necessary for gigging but that's only my personal opinion.
G&L L2500
Squier Affinity Jazz Bass 5
Ashdown RPM pre-amp
Ashdown Little Giant 1000
300 watt 15" powered cab
450 watt 15" powered sub bass cab
2x10 + horn
1x15x10 + horn