Multiroom Audio System - Single Satellite Speaker - Expansion Speaker Only, Master Speaker Required Please note: This is an expansion speaker for those who already own a Multiroom "Master" speaker. This item cannot operate without a base speaker and is available for purchase for those who own 2, 3 or 4 speaker systems. Unlike WiFi speaker systems which restrict streaming capabilities, Multiroom allows you to stream any source from your device to any location you choose. Pandora, YouTube, iTunes, etc., nothing is off-limits. Setup is easy and takes only 5-10 minutes. Multiroom App (downloaded free from Google Play Store / Apple App Store) features built-in EQ that can adjust bass, treble, DSP modes, assign left and right speakers (stereo), Power on/off each speaker or mute the whole system. Each individual room or zone can also be labeled and customized via the Multiroom App. Master speaker features the latest Bluetooth version, 4.0. This extends the range from your phone to the base speaker to an impressive 40 feet and is more efficient than ever meaning music playback will not deplete your phone's battery for many hours to come. Satellite speakers feature an even more impressive range of 50 feet through walls/obstructions. This package contains: 1 Satellite Speaker (Master Speaker Sold Separately), 1 AC Adapter. Multiroom speakers provide omni-directional, HD Audio. A fantastic addition to any household, this system is available in combinations of 2 speakers, 3 speakers or 5 speakers total. If a 2 or 3 speaker package is purchased, single satellite speakers can always be added later.