I've had this cab for a while now and thought I'd share my thoughts on it. Mostly play with a 5-string and a Markbass LM 250. Ranging from flatwound strings and motown to acoustic to agressive fuzz, this cab will work for all of that.
How does it sound?
It is a neutral sounding cab, doesn't really colour the sound in any way. A good representation of the sound that you put into it. Doesn't drop off on the low end as some other small cabs do.
How light is it?
Extremely. It is also small. Very easy to carry.
How loud is it?
Well, I have used it in a small room with a loud drummer, 2 guitars and vocal, and it sort of pulled it off but not really. And that's fine, because that is not the intended use for this cab. I've used it a bunch of times to play in the rhythm section of a small horn band, works wonders. Playing with acoustic instruments, giving a volume boost to your upright, a blues trio, restaurant gigs etc. is where this thing will shine. If you want to rock out and make some noise, get something bigger.
Conclusion: if you need a cab that is actually small and lightweight, look no further.