Welcome to future-proof audio. Crusher ANC XT 2 is built with Skull-iQ a powerful technology that runs innovative voice features and enables new upgrades via the Skullcandy App. That means you won’t need to replace your beloved headphones to get the latest greatest features. Skullcandy Crusher is the one-and-only adjustable sensory bass experience. Combined with premium 4-mic digital active noise canceling and Personal Sound the Skullcandy Crusher ANC XT 2 is the ultimate immersive listening experience.