I'm actually enjoying the new ZMF leather pads for 8XX. They sound more impactful and mids are pushed forward a bit while bass lowered but i eq it back up. I can wear these for 10 hours with my EQ setting and not get fatigued anymore.

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I'm scared to do the sticker mod, need more info before I decide if i want to do that

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As for cables, I bought a 1.2m cable with 4pin XLR plug from Forza Audio Works and am very pleased with the quality of the cable and also the length since I use my headphones at my desk only the shorter length is really perfect for me. Sound difference from this cable and stock sennheiser cable is the same (imo).