Marvel: Sound Immunity

Alison Blaire (Dazzler)
Her ability to transduce sound also protects her from being deafened by loud noises.

Sean Cassidy (Banshee)
Banshee's hearing and equilibrium are unaffected by his hypersonic abilities or other similar sound/sonic-based abilities.

Theresa Cassidy (Siryn/Morrigan)
Siryn's hearing and equilibrium are unaffected by the effects of her scream and similar abilities.