This is a Geek Squad Certified Open Box Product. See below for more information. Crank out audio that matches your spectacular home entertainment visuals with this Onkyo TX-NR6100 7.2 Channel 8K Ultra HD Network AV receiver. It features Dolby Atmos and DTS:X for a rich and immersive sound on each of its 210W channels. It also boasts a 2 zone functionality that lets you pipe different audio to various locations at the same time while 4K and 8K pass-through keep picture quality top-notch.