Amazon Echo contains multiple good microphones. Is it possible to link them to my PC so that I can use the microphone with software like Skype?
There are currently just two Bluetooth profiles supported.
Advanced Audio Distribution Profile (A2DP)
This profile allows you to stream audio from your mobile device (such as a phone or tablet) to Echo.
Audio / Video Remote Control Profile (AVRCP)
This profile allows you to use hands-free voice control when a mobile device is connected to your Echo.