The Marshall Voice app supports German, English, French, Spanish and Italian.
Yes, the Stanmore II Voice with Alexa speaker uses the Marshall Voice app.
Yes, Multi-Groups can be set up using the Amazon Alexa app.
Yes, the microphone can be muted.
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 Stanmore II Voice with Alexa doesn't have the aptX or AAC codecs.