The SOUNDFORM Connect is a new Belkin audio adapter designed to bring any powered speaker with an 3.5mm or optical input into an Apple-heavy smart home set-up. The user can then control it via AirPlay 2 on their iPhone, iPad or TV. Therefore, a traditional speaker can become as responsive to voice-control and automation as shiny new high-tech models.
https://www.notebookcheck.net/Belkin-s-new-SOUNDFORM-Connect-can-upgrade-older-speakers-with-Apple-AirPlay-2.540462.0.html