There's an application You may use with the SoundLink Max, but it is not obligatory. If you need to do use it, you'll get access to EQing, speaker customization alternatives, and firmware updates. 6-inch tweeter plus a passive radiator fires sound out the entrance and it mirrored on the https://www.bluetoothspeaker.top/outdoor-connection-high-quality-sound-wireless-speaker-for-bluetooth/