Bluetooth speakers all connect to your resource device through Bluetooth, but that isn’t the one audio connection available for you. Some Bluetooth speakers nonetheless have a pricey headphone jack, to help you tether the speaker to your phone by wire. Passive speakers need an external amplifier and crossover �?more https://www.bluetoothspeaker.top/outdoor-wireless-long-playtime-bluetooth-speaker-for-mobile-phone-computer/