Incredible sound quality from such a small setup. Dare I say it rivals my Hugo 2 setup!?
Turns out that not all otg cables are created equal. Found a cable where the Shanling M1 was able to power the 9038s all by itself. It's a short micro to USB c cable with a micro-to-usb c converter on the micro end. Not sure how long the battery will last but looks like it'll be between 1 and 2 hours. Which is perfect for use during my 1hr lunch breaks.