Image: SchuurmanThere’s a lot riding on Sonos’ first pair of wireless headphones; CEO Patrick Spence has expressed confidence that the new product category will be a huge revenue driver for his company after Sonos has faced cooling demand for its speakers. The headphones are expected to ship sometime next month, but today, we’re getting a first look at the hardware design — and we now know what they’ll be called.You’re looking at the Sonos Ace headphones. These images were prematurely published by authorized Sonos parts dealer Schuurman. The main image reveals quite a few b***ons on both ear cups, a toggle switch of some sort, and a premium build that seems fitting of headphones expected to be priced around $450. The Schuurman website shows a price of…