MMCX to 2.5mm Balanced Audio Cable 60" | Black | ER Series - Etymotic
Meze Audio MMCX To 4.4mm Balanced RAI Series Silver Plated Upgrade Cable - AV World - Auckland HiFi Store
Amazon.com: MEE audio Universal MMCX 2.5mm Balanced Audio Cable with 3.5mm Balanced, 4.4mm Balanced, and 3.5mm Stereo Adapter Set for Astell&Kern, FiiO, Sony, HiFiMan, and Other Balanced Sources : Electronics