Amazon offers its Amazon Echo Voice-Controlled Bluetooth Speaker for $153.71. With free shipping, that's the lowest total price we could find by $6, although we saw it for $29 less during Black Friday week. The 9.25" Amazon Echo has seven microphones and noise cancellation, which allows it to hear and answer questions from anywhere in the room, even while it's playing music. It also features a 2.5" woofer, 2" tweeter, reflex port, and WiFi with continuous access to the cloud.