At Yamaha, we combine the latest technology with years of accumulated experience and know-how. Over the years, Yamaha Has produced quality AV receivers that offer reliability and performance at price levels that appeal to the vast majority of consumers. Our receivers are equipped with Yamaha’s Proprietary YPAO Automatic room calibration and Optimization system, YPAO analysis the room acoustics and your system, then precisely adjusts various audio parameters to provide the best sound for your room.