So. I tried it at a show with my Ozzy tribute.
I was switching between my bfd, muff, and orange juice for the sabbath stuff.
There was no issue whatsoever with either low end loss, or disappearing in the mix.
To use a bc buzzword- this muff has heft!
previously, I had not been a big big muff fan ( having tried most sub species), but this pedal changes that for me.
A huge win at Β£75 ish