misodiko · Aftermarket replacement
Upgraded Ear Pads Cushions Replacement for Sennheiser GSP 670 (Fabric)
Verified as compatible with 1 headphone model.
Verified compatible headphones
Evidence
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misodiko.com
misodiko's own product page explicitly names the GSP 670 as compatible and describes the product as fabric replacement ear pads. It states the upgraded pads are thicker than the originals and may change sound by increasing the distance between the ears and drivers.