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 - Walmart.com
Balanced Cable with MMCX Connector (2.5mm Jack) - Brainwavz Audio