Onkyo PRSC5530 11.2-Channel THX Certified Network A/V Controller with Dolby Atmos (Certified Refurbished) This Certified Refurbished product is tested & certified to look and work like-new. The product includes all original accessories, and is backed by a 1 year warranty. Supports new Dolby Atmos surround format for exciting multiplex sound. Dolby Atmos transports you from the ordinary into the extraordinary with captivating, multidimensional sound that fills your room and flows all around you. THX Ultra2 Plus to Ensure Every Aspect of Audio Performance Meets Rigorous Standards for Theater-Reference Sound HDMI 2.0 Terminals for 4K/60 Hz Ultra HD Entertainment, and Supports HDCP 2.2 Copy Protection for Future 4K Streaming, Broadcasting, and Premium Studio Content Built-in Wi-Fi and Bluetooth Version 2.1 + EDR with Advanced Music Optimizer and Built-in Internet Radio and Music Streaming Services (Tune In Radio, Pandora, Slacker, SIRIUS XM Internet Radio, Spotify, and AUPEO!)