Engadget: We don’t spend a whole lot of time focusing on home theater receivers ’round these parts, but we do likeAirPlay, and we’re especially fond of audio devices that boast compatibility with the iOS wireless streaming tool out of the box. Yamaha’s RX-V573 and RX-V473 are two of the latest mid-range audio mixers to ship with AirPlay integration — a feature lacking from the company’s past offerings — along with compatibility with the AV Controller app, available for iOS, Android and the Kindle Fire. There’s also a nifty 4K video pass-through feature, which won’t do you much good at present, but may go a long way to future-proofing both devices. There’s not much differentiating the models, save for a $100 gap in price ($450 for the V473, $550 for the V573), and 7.1 channel audio in the pricier model (you’ll find 5.1 channels in the bargain offering). Both flavors include front-panel USB ports (also with iOS compatibility), four HDMI inputs and digital audio inputs, and 115 watts per channel. You can pick up either model now, and there’s a more detailed list of specifications awaiting your gander in the PR after the break.