Yamaha has unveiled a quartet of new AV receivers in the company's affordable, yet feature-packed RX-V79 series. The latest in the series starts with the price-conscious 5.1 channel RX-V479 for under $500, and moves up the ladder with the 7.2 channel RX-V579, RX-V679, and RX-V779, all of which pack a heap of features like 4K passthrough, wireless connectivity, all the latest surround codecs, and high-resolution audio compatibility to make your home theater hum.