Ideal for a mid-sized room, the Monster 129269-00 S2 is part of the SoundStage High Definition Wireless Home Music System. This is a revolution in multi-room wireless audio, giving you more ways to connect to the music you love, including both Bluetooth and Wi-Fi. Whatever streaming music you desire, SoundStage can play it, and without a bridge or gateway that other wireless speaker systems require. This is room-filling Pure Monster Sound® that takes wireless Hi-Fi to a whole new level with more clarity, greater dynamics, higher definition, and punchy bass. Control it with your iOS or Android phone or tablet. This changes everything.