Discover the best prices on Turtle beach x4 headphones Xbox Accessories when you comparison shop at bizrate. Browse Turtle beach x4 headphones in Xbox Accessories to find the lowest prices from Microsoft and Turtle Beach. Narrow your search by price range, product specification, store, or style -- even caluclate your tax and shipping charges before buying. bizrate is your one-stop shop for Video Game gifts: Buy X4 Over the Head Headphone.