Geekria · Aftermarket replacement
QuickFit Replacement Ear Pads for Superlux HD681/HD668B/HD669 and other listed models
Verified as compatible with 1 headphone model.
Verified compatible headphones
Evidence
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superlux.com.tw
Superlux’s official page separately identifies HD330 and HD330PRO, corroborating that HD330 is a distinct target model rather than the PRO model.
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shop.geekria.com
Geekria’s own product page explicitly lists Superlux HD330 among compatible models and describes the replacement pads as memory foam with a protein-leather covering. This supports the stated aftermarket fit claim; the page does not specify a part number or mounting method.