Kobett, along with Michael Olman, replaced Rick Ash and Joe Earle after the premiere of 24. While Olman mixes the dialogue, Kobett mixes the sound effects. He worked on every season of the show, as well as on 24: Redemption. Olman and Kobett have been nominated for a Primetime Emmy Award 7 years in a row for their work on 24, in addition to an Emmy nomination for 24: Redemption. They have won the Emmy for "Best Mixing for a Drama Series" twice for "24".