This 9.2-channel Onkyo SMART A/V ReceiverTM plays the lead role in your whole-home audio experience. Works with Sonos, Chromecast built-in*1, AirPlay 2, and DTS Play-Fi® are enhanced by high-speed 802.11ac Wi-Fi® while speaker outputs with DACs can power D/A audio in three rooms. With nine channels of high-current power on tap, roll up the volume to THX® Certified SelectTM reference level and wrap your family in 5.2.4 channels of Dolby Atmos® or DTS:X® sound, or feel IMAX® Enhanced*2 content as the filmmakers intended. Dolby Surround® upmixes legacy sound for height-enabled systems while Dolby Atmos Height Virtualizer creates a 3D sound-field using horizontal speakers. DAA features an upgraded power-train while anti-noise refinements result in a wider soundstage. AccuEQ Advance 9-point calibration eliminates standing waves so audio is xpressed naturally. All this and more helps the TX-NR797 shape entertainment to your life.