In my experience, stock Marshalls don't have enough gain for anything more than, say, AC/DC, which some people are cool with. My Egnater added gain stage has MORE than enough gain for low (or high) volume playing, but at high volume with all that gain (say if the gain is dimed) the amp just feeds back like a mother the second you stop playing, so you either ride the volume knob all night, gate the shit out of it, or turn the gain back and get the rhythm sound under control and step on something to juice it up for solos. For bedroom level playing it's MORE than enough, and it sounds great, very open and not compressed all to hell.