>>331009385
theres another 3d printable part that "fixes" the bass on the default strap but all it does is squish the speakers into your ears. Where you run into problems comfort-wise with the default strap is that it's much heavier than the DAS and the back is fuckhuge and will be an issue if you ever want to lean your head back onto something.
>>331009540
You would need a C to 3.5mm mic and headphone jack. It's possible you might be able to split it into more USB ports so you could do both and still use the face tracker but you may run into issues where the root hub runs out of devices so YMMV.