I have been trying to cast via Bluetooth to a single Amazon Echo device, using the Bluetooth Out on my Wiim Ultra. While I can pair with a UE Boom 2 speaker and output from the Wiim Ultra to it, if I try to do the same with an Amazon Echo Show, the Echo Show is visible on the list of devices to pair with, but when I click on the entry the device does nor pair and I cannot output music to it. I am trying to use the Amazon Echo as a bluetooth endpoint so I can play music from my turntable in another room, with the Echo Show outputting to active speakers. I have tried putting the Echo Show into BT pairing mode, but it still does not connect. Any ideas?