Hey loudest yoyo was my post!
How loud my yoyos get have to do with bearings consistently. All of my non-hybrid yos play the same in terms of volume when I have a good bearing plopped in there- which is near-silent. All hybrids on the other hand play loud to some extent but the Monarch does a good job of not screaming at me constantly for a hybrid.
Currently my Valkyrie is the quietest. I currently can’t hear it in play.