The Echo Dot has speakers that can become tinny if the volume is turned up. It’s not a great experience for music but could definitely work well if you use it to output to better speakers. However, the Echo Dot is great for talk. It’s clear enough that it can fill a room with speech very nicely.
The Echo Dot is also about the same price as a portable radio, so together with a USB battery (there are even cases), and a smart phone with an Internet tether, maybe the Dot will replace the radio that’s been a companion of so many working night shift jobs? Is it lights off for these?