Dekoni Audio · Aftermarket replacement
Replacement Earpads for HiFiMan HE Series Headphones and More — Sheepskin, Fenestrated Sheepskin, Hybrid, or Elite Velour variants
Verified as compatible with 1 headphone model.
Verified compatible headphones
Evidence
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down.hifiman.com
Confirms the HE400i’s general pad mounting method: the mounting flange fits onto the earcup rim and is pressed until it snaps into place. It does not establish Dekoni-specific mounting.
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dekoniaudio.com
Dekoni explicitly says its circular HiFiMan pads fit HE400i, identifies its four material variants, and discusses HE400i-specific pad measurements and sound comparisons. It states that the tested HE400i stock pads are pleather/velour hybrids.