The TX-RZ630 adds fully immersive 5.2.4-Channel DTS: x or Dolby Atmos object-based surround-sound to stunning 4K HDR video on your compatible display. Now with 9.2 channels, a muscular hub for whole-home entertainment, it can power speakers in main, zone 2, and zone 3, and share audio to any supported Hi-Fi system via wireless platforms including chrome cast built-in, DTS Play-Fi technology, or flare connect. You can also stream content over airplay, Wi-Fi, or Bluetooth wireless technology. Dynamic audio amplification has upgraded parts for earthquake bass and flawless treble: check out the 5 hz-100 kHz frequency response. The amp's blistering dynamics, high current, and nuanced voicing gets more from music, be it a vinyl record, Hi-Res audio album, or mix of sources playing around the house. The receiver also includes AccuEQ advance room-acoustic calibration with AccuReflex for a cohesive theater-room soundstage.