Annadue Replacement Headphone Bluetooth Adapter Cable for Sennheiser, Wireless Earphone Cable with Microphone and Controller for Sennheiser IE80 IE80S IE 8 IE 8i and Other Headphones: Amazon.co.uk: Electronics & Photo
Headset 3.5mm Jack Audio Cable With Mic For Sennheiser IE80 IE8 IE80s IE8i | eBay
Got custom molds for my Sennheiser IE80's, can't believe the difference in sound quality. Night and day change, 10/10 would recommend to anyone looking for a much more balanced sound with better