Live Sound Essential - Dual XLR equipped Bluetooth receiver adds Stereo Bluetooth Streaming capability to any mixer or active Pa speaker, for playback from devices including smartphones and tablets Effortless Integration - Universal compatibility with virtually any music mixer, USB mixer or active PА system with an XLR mixer input; easy-to-use Bluetooth connectivity for setup in seconds Simplified Stereo Playback - Wirelessly link two Bluetooth Ultimates’s together for cable free Stereo Playback or to accommodate larger live sound PА speaker system setups Ready for any Scenario - Stable Bluetooth connectivity with 100+ ft range, provides ample coverage for weddings, parties and DJ gigs where drop-out free pro quality audio is required Long Life Internal Battery - Built-in rechargeable battery provides 6+ hours of operation; micro USB port for computer USB or wall adapter charging