Smash
Hack
That is the thing. A lot of us are Marshall fans. We think about buying an original with all the good and bad that comes with that. You have a few amp builders making clones of the originals like ceriatone and Granville. You have a ton of guys making modded hot rodded versions.Mark is a class act and guy knows tone. Bought an R8 from him a few months ago and got to plug into one of his amps up at his shop. There are lots of “modded Marshall” type amps out there but a majority of them—IMO of course—don’t sound as good as the real thing with a good boost. Mark’s does. OP congrats on a great amp!
I think what Mark is doing is subtle. Taking what works and doesn't work with a marshall and just tweaking a bit. plus you get a more reliable amp than a 40 year old amp (that has arguably been reliable to this point). The amp is tight, but no one is going to call it ice picky or unnatural.