Chance are if you're reading this then you know what this pedal is and what it does. Born in the early 80's and intended to sound like a Marshall stack (Yes really) it mostly went unloved. Everyone knows David Gilmour used one in a complex signal path on later PF records but other than this there wasn't much else.
A few years after the pedal being discontinued a group of young Swedish lads created an album with a "use what we have" mentality. What they had was a cheap Peavy combo, a cheap Ibanez guitar, a couple of HM-2's and a DS-1. What they created wasn't just an album, it was an entirely new tone. Just when the rest of the world was turning from Hair metal to Grunge the HM-2 took a totally different path which although not as popular at the start as Grunge has had massive staying power so much so that BOSS are now creating a re-issue Waza version in collaboration with fans of the HM-2.