Deadmau5 to launch ‘Neffmau5’ clothing line in conjunction with Neff Headware Deadmau5 is teaming up with Neff Headware to create "Neffmau5," a clothing line centered around the iconic mau5head. Related Posts: Get a sneak peek of Portugal. The Man and deadmau5’s unreleased collaboration [Watch] Wolfgang Gartner and deadmau5 come together for third collaborative effort, ‘Channel 43’