Found a neat trick to breathe new life into the Chord Mojo (details in comments) : r/headphones
Chord Mojo vs. OPPO HA-2SE Comparison Review | Headphone Reviews and Discussion - Head-Fi.org
Oppo HA-2 Review – The One That Got Away - Home Studio Basics
Meenova Lightning-to-microusb Usb Dac Otg Cable For Iphone/ipad/ipod Chord Mojo Hugo Pha3 Fiio Hifi Oppo Ha2 K5 Camera 15cm 1.2m-black 1.2m 4ft | Fruugo NO