compared to a muzzle brake - a linear compensator is going to sound like a 22lr for you.
they redirect the blast forward of the shooter, not back and to the sides for the loud concussion.
its just perception of course because of what direction everything is going, but at the shooters ear it does make a difference.
i put one on my 308 - one made my S.T.D because the side blast from even a standard flash hider was rocking the house too bad to annoy my dad when i was up there shooting.
as an added bonus - they make good thread protectors for DT suppressors as they dont need to be indexed in any way or anything.. just snug them down good and you're set to roll.