Yamaha SRT-1500 MusicCast TV Speaker Base, Works with Alexa Works with Alexa for voice control (Alexa device sold separately). Clear, detailed and immersive TV sound HDMI with 4K Ultra HD pass-through and HDCP 2.2 Access to your music library, Pandora, Spotify, Rhapsody and more Versatile connectivity - Wi-Fi, Bluetooth, Air Play and Spotify Connect MusicCast wireless multiroom audio system