Sony XBR75Z9D 75” 4K HDTV Home Theater in Living Room | New York A client in NY wanted to upgrade to a High-End Home Theater System to match his brand-new living room. DTV Installations used the very latest equipment: a 75” Sony 4K Smart Android Ultra HDTV with HDR technology and a 4K, 7.2 channel Sony STR-ZA2000ES A/V receiver. They were accompanied by a wireless, Monitor Audio surround-sound speaker system and installation of a new, lightning-fast Wi-Fi system, plus additional audio systems in two other rooms.