The new SONOS Arc Ultra has three levels of speech enhancement: Low, Medium and High. HA regonises the new Arc Ultra and controls it fine. But speech enhancement is a switch. Turing it on/off toggles the Low mode only. I can’t find a way to select medium or high. If I select, say Medium, in the SONOS app on my phone, then toggle speech enhancement off/on using HA, it sets the enhancement back to Low.
I think the logic for the different levels is simply missing in HA since all previous soundbars just had on/off.