This saves Amazon the effort of designing another smartphone no one wants, and it also let them design the Echo around the two speakers. As a result, most of the interior of the Echo is taken up by the speakers and the baffles
empty space required for better audio quality. (In a mobile device, that volume would be sacrificed for batteries.)
All in all, the Echo is a simple gadget that isn't packed nearly as tightly as the Mac Pro which Apple launched last fall. That was a bigger cylinder, but it was also far more densely packed with a heat sink, SSD, and even a fan (to keep the desktop in a can from overheating, of course).
Now that we know what's inside, what do you think of the Echo?