Our quick take

Why would you need an Echo Sub?

  • Easy upgrade for Echo owners to boost bass output Available in charcoal, heather grey or sandstone

Echo Sub setup and specs 

  • Pairs via Alexa app to other Echo product(s) Dimensions: 202mm tall and 220mm high; Weight: 4.2kgs 6-inch downfiring subwoofer, 100W Class D amplifier, 30Hz lowest frequency

Is the Echo Sub worth buying? Low-end performance

The importance of system details 

To recap

Add bass and depth to your second-gen Echo system. The Sub will appeal to those who have never considered spending big money on an music system, while enjoying the convenience and connectivity of Alexa. There are some foibles, but it’s a great modular upgrade.