As a lover of Electric Callboy and Babymetal what surprised me with these headphones is I listen to them at lower levels than my previous and theoretically more sensitive Ananda Nano's. Basically the Arya U's seems to have this neat trick where they can still deliver slam and tight bass (love a good kick drum) at lower levels than you expect.I like Hard Rock and Metal and it's easy to always want to keep raising the volume with those Music Genres for the Punch/Slam/IMPACT.
But we must RESIST!! Once our hearing gets damaged/hearing loss... it's GONE FOREVER!! Gotta be smart with HP volume... especially the older we get.
Still dial them up a few notches on occasion because well it just gets more visceral when you do. However its not a prerequisite to enjoy music with these headphones.
Apologies if I'm not explaining this properly.