Ideal for a mid-sized room, the S2 is part of the SoundStage High Definition Wireless Home Music System. Multi-room wireless audio, to connect to the music you love, including both Bluetooth and Wi-Fi. Add up to 10 speakers, from up to four streaming music sources, all with no gateway or bridge. Convenient USB charging, a handy 3.5mm mini jack for any source, fiber optic digital for TV, and micro USB for easy software updates are all included. Control it all from via the Monster SoundStage app for your iOS or Android device.