Brainwavz · Aftermarket replacement
Brainwavz ProStock earpads
Verified as compatible with 1 headphone model.
Verified compatible headphones
Evidence
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brainwavzaudio.com
Brainwavz’s ProStock section explicitly lists ATH M30X and gives dimensions of 105 mm × 84 mm with a 57 mm × 35 mm inner hole.