Clean, sterile, no warmth. Uh... isn't that also characteristic of Eden, SWR, Trace Elliot, non boost activated GK, etc..? I think dyed in the wool Ampeg and Acoustic guys top the Markbass hate list.

There are pedals to add grit. I use a BOSS BB1X.
I also use my CMD121P as an acoustic guitar amp and sometimes plug a mic into it for announcements/portable PA.
I find it rather cool that with bass, it's pretty much flat EQ and no VPF, too. I just turn up the VLE to around 10-11 o'clock to tame the tweeter. Oh, how about that?
There's more warmth!