Brainwavz · Aftermarket replacement
Replacement Earpads for Sennheiser GSP500, GSP550, GSP600 & GSP670 Headphones — PU Leather & Memory Foam
Verified as compatible with 1 headphone model.
Verified compatible headphones
Evidence
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brainwavzaudio.com
Brainwavz’s page explicitly lists GSP500 as compatible, identifies the pads as Brainwavz-manufactured, states plastic clips are used for installation, lists dimensions as 85 × 118 × 26 mm, and shows part number BWAVZ-EP-SENGSP500-PU-BLK.