Apple offers a $300 "developer headband" for the Vision Pro through its developer website, which provides a USB-C connection between the headset and Mac. Apple says the developer headband helps "accelerate the development of graphics-intensive apps and games."
The developer headband is designed to provide the same audio experience as a standard right-side audio strap, so it can be used for both development and testing.
As DaringFireball's John Gruber points out, only developers logged into a paid US Apple developer account can use the developer band.
Earlier today, we shared an image of a developer headband in Apple's documentation, an accessory that Apple will use for on-site device diagnostics in retail stores.