Sennheiser HD 800 S with Burson Conductor 3

Sound quality is great! Wish there was a programmable EQ. USB C connectivity and lack of charging the source device is not great. I should be able to use a USB C to USB C cable to connect the source device to the Conductor 3X, but I have to connect a USB C to OTG USB A adapter to the source device, then a USB A to USB C cable to the Conductor 3X. And even then it doesn't charge the source device.