Hopefully JV and Benny and Aaron and two Italian guys have found several by now.
Echo Input adds Alexa to an external speaker and connects via 3.5 mm audio cable or Bluetooth.
With four microphones, Alexa hears you from across the room — even when music is playing.
Stream Amazon Music, Apple Music, Spotify, TuneIn and more on your favourite speaker. Services may require subscriptions or other fees.
Just ask Alexa to play a song, read the news or check the weather and traffic.
Set alarms and timers, add items to your to-do list and control compatible smart home devices.
Calling and Drop In via Bluetooth is currently not supported.
Alexa is always getting smarter and adding new skills. Track your fitness, play games or fall asleep to rain sounds.
Slim, low-profile design fits almost anywhere.
Echo Input requires an external speaker and connects via the included 3.5 mm audio cable or Bluetooth. Sonos speakers are not currently supported. It does not pair to Wi-Fi speakers. We recommend pairing with certified Bluetooth Speakers. Search speakers
Speaker power-saving mode and volume
Speakers connected by 3.5 mm audio cable may power off if not used for an extended period of time. When possible, we recommend turning off the speaker’s power-saving mode by following the manufacturer’s instructions.
When connecting Echo Input to your speaker, first increase the volume of the speaker. Then say, “Alexa, volume 7” or “Alexa, volume up”.
Shamelessly copied from earlier post