Amazon Echo Sub, Powerful subwoofer for your Echo, Requires compatible Echo device

Technical Specifications

• /Echo Sub delivers down-firing, deep bass sound through a 6" woofer.
• /Pair with one compatible Echo device to enjoy dynamic music that fills the room.
• /Pair with two of the same compatible Echo devices for rich left/right stereo sound.
• /Create an Alexa Home Theater by pairing Echo Sub and up to five compatible Echo speakers and your compatible Fire TV device.
• /Simple to set up and use—just plug in, open the Alexa app, and wirelessly connect to your Echo device(s) to control music with your voice.