Sennheiser · Official replacement (OEM)
Earpads (pair) for HD 424
Verified as compatible with 1 headphone model.
Verified compatible headphones
Evidence
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global.sennheiser-hearing.com
Sennheiser identifies article 019543 as genuine OEM earpads and explicitly states compatibility with the HD 424.
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us.sennheiser-hearing.com
Sennheiser US lists “Earpads (pair) for HD 424” in its HD 424-compatible earpads collection.