Amazon adds the Tap and the Dot to the Echo family

The Echo has received more than 33,000 Amazon reviews at a nearly five-star rating since launching in late 2014 and was one of the best-selling items going for more than $100 over the holidays.

Amazon is now introducing two new members to the Echo family with slightly different uses in hopes of achieving a similar reaction: Amazon Tap ($130) is a portable version of the original Echo, and Echo Dot ($90) is a tiny, hockey-puck-sized version that includes a built-in line-out connector to hook into your choice of speaker.