Yamaha Music Cast Audio Component Amplifier Dark Silver (WXA-50), Works with Alexa Works with Alexa for voice control (Alexa device sold separately). Standby Power Consumption : 1.8 W Connect your favorite speakers to create a powerful streaming Audio system Wi-Fi, airplay, Bluetooth and Spotify connect High-performance design with Premium Audio components Extremely versatile control and connectivity options Access to your music library, Pandora, Spotify Rhapsody and more