The Duo will NOT work with the Amazon Tap or Echo Speaker.
These two devices already have Bluetooth.
However, the 1st generation Amazon Echo Dot does NOT have Bluetooth and works great with the Duo.
The Duo will work with the Amazon Echo Dot. Add the power of Alexa and the convenience of music, playlists, podcasts, or audiobooks to your Bose or compatible iPod docking station.
For step by step instructions on pairing your Echo Dot to your CoolStream Duo, click here.