Velour earpads for HD 500 series, warm tuning, black
Verified as compatible with 3 headphone models.
Evidence
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support.sennheiser-hearing.com
Sennheiser identifies the HD 550 by article number 700455 and describes it as an over-ear, open-back headphone, corroborating the target model identity.
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us.sennheiser-hearing.com
Sennheiser’s listing identifies article 572287 as black velour earpads for the HD 500 series and explicitly lists the HD 550 as compatible, with a warmer sound. It also lists models for which they are not compatible. The page showed the product out of stock when checked.
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us.sennheiser-hearing.com
Sennheiser’s earpad collection filtered for HD 579 returns the HD 500-series warm-tuning black velour pads.
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sg.sennheiser-hearing.com
Sennheiser identifies article 572287 and lists HD 599, noting the pad color differs from the original.
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us.sennheiser-hearing.com
Sennheiser lists article 572287 as warm-tuning velour pads and explicitly lists HD 599 as compatible for warmer sound.