Grado Headphone Replacement B CushionsWe think these new cushions from Grado are an excellent way to get the best, fullest sound from your Grado Headphones. Consumer replaceable genuine Grado ear cushions. Standard equipment on all series of the following headphones: Signature S750 and Signature S550 This cushion will also fit all Signature, Classic, Statement, Reference, Prestige, Professional, and Limited Edition Headphones.