Yamaha Music Cast Audio Component Preamplifier Dark Silver (WXC-50), Works with Alexa Works with Alexa for voice control (Alexa device sold separately) Connect your existing home theater AV receiver or hi-fi system 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