Echo Sub: a $129.99 subwoofer that pairs with Echo speakers - The Verge

is making a more serious foray into the home audio space with a subwoofer that can be paired to two Echo speakers for a 2.1 stereo system. Should Sonos be worried?

Echo Sub delivers down-firing, 100W deep bass sound through a 6 woofer. Pair with one Echo device to enjoy dynamic music that fills the room. Pair

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Echo Sub - Powerful subwoofer for your Echo - requires compatible Echo device : Devices & Accessories

just accidentally revealed an Echo subwoofer and smart plug - CNET

Echo Sub: a $129.99 subwoofer that pairs with Echo speakers - The Verge

just accidentally revealed an Echo subwoofer and smart plug - CNET

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Echo Studio

Echo Sub review: Echo Sub is $130, turns Echos into a 2.1 system - CNET