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Amazon.com: Geekria Apollo Single Crystal Copper Upgrade Audio Cable Compatible with Sennheiser HD25, HD25-1 II, HD25-C, 2.5mm Replacement Headphones Cord for Hi-Resolution Audiophile, HiFi Headset (5ft/1.5m) : Electronics
Replacement Cable HZL26 PX for Sennheiser Headphones, DIN Cube & 6.3mm Jack, NOS | eBay