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
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
Delock Products 85848 Delock Audio Cable 2.5 mm 4 pin stereo jack male to 2 x MMCX male 1.20 m