I made this for my 2x12 cab. Playing at church means I have to try to keep it down. It's not perfect but it works pretty well. The cab is gone now, so I don’t need it anymore!
You would get some good use of it at a studio as well.
It has a speaker input and mic output built in, so it's super convenient.
You will need a truck or a van with lots of space, this thing is large!