This arrived on Tuesday, but I've only had time to quickly throw it in the new rack case this lunchtime and have a quick play. It's really a quite remarkable little box from initial tests.
My current setup actually has quite a lot of clarity on it's own (or so I thought), being a Marshall JMP1 into a Marshall 9100 power-amp and then into a 1960A 4x12 loaded with Celestion Vintage 30s. With the Sonic Maximizer stuck between the JMP1 and 9100, and playing with the controls seems to remove an additional layer of mud I didn't even realise was there (if you see what I mean). The Lo Contour control seems to give your guitar an extra thump (especially when doing Palm-muted chugging) but it doesn't muddy things at all. The Process control opens up the top end quite a bit and can give a bit of sizzle on higher settings. I think this is where the much reported "turning it on is like removing a heavy blanket from your speaker cab" comes from, and it does sound just like that. :)
It's still early days though, and this is only a quick impression from 10mins playing at polite levels. I'll report back how it handles itself at rehearsal levels in a week or so.
Muttley
EDIT: Post topic changed so it's more obvious what this is about...