This audio manufacturer has two new AirPlay-enabled home-theater receivers that let you wirelessly stream your music from your iOS device or Mac to your family room. The first is the ethernet-equipped, $800 AVR 2700, a 7.1-channel audio-video receiver providing 100 watters per channel. The second is the Wi-Fi-equipped, $1,000 AVR 3700, a 7.2-channel system with 125 watts per channel. Each offers eight HDMI inputs, supports Dolby TrueHD and DTS-HD Master Audio, and features 4K video scaling. The AVR 3700 can also be controlled by an iOS app.