The Fire TV Cube looks like a cubed Echo Dot, but it includes all the features of its Fire TV 4K and Echo smart speakers. There are four echo buttons at the top and a blue light that lets you know when Alexa is listening. Inside it has eight far-field mics so it can hear your commands from across the room and a built-in speaker for Alexa’s responses. It also has a 1.5 GHz quad-core processor, 2 GB RAM, and 16 GB of internal storage space (8 GB more than the 4K Fire TV dongle). It supports 4K Ultra HD and HDR-10 video and Dolby Atmos audio.