Amazon has unveiled five new Echo products that raise the bar in the automated home market. Among other things, Amazon has improved the sound quality in its second-gen Echo speaker to compete with several new competitors in the high-end audio segment. The new Echo has a new speaker architecture, a dedicated tweeter, Dolby sound processing, and a 2.5 inch down-firing woofer. The new smart speaker uses Amazon's second generation far-field technology, which offers improved wake word-processing, better beam-forming and enhanced noise cancellation.