Pure power and precision. The A6A has been carefully designed so every element of your entertainment is the best it can be. From slight whispers of sound to swift on-screen movements, the A6A ensures you won’t miss a thing. Works with Sonos! Unite your Yamaha home theater with a Sonos system using a Sonos Port, sold separately. After a quick setup, the Sonos app can seamlessly power on the receiver, select a designated input and control the volume.