The Marshall Voice app supports German, English, French, Spanish and Italian.
Yes, the Acton II Voice with Alexa uses the Marshall Voice app.
Yes, the microphone can be muted.
Yes, Multi-Groups can be set up using the Amazon Alexa app.
Yes, all updates are released OTA (Over-The-Air) as long as the power of the speaker is left on and the speaker is connected to a Wi-Fi network.
No, the Acton II Voice with Alexa doesn't have the APTX or AAC codecs.