I have noticed my Echo has a harder time hearing me than my 2nd generation Dots. I often have to repeat things to my Echo just to get her attention, and rarely if ever do I need to do this with my 2nd generation dot. I am not sure if the microphones aren't as sensitive on the Echo or perhaps its due to the design with the mics being higher on Echo vs the Dots. Curious as to what your experience has been with this.