Wireless active speaker with roon

hello everyone, i’m looking for a wireless active speaker that i can use directly with roon. should be quite flat, cause it should be integrated into the kitchen.
an alternative would be a pi with a flat active box. The speaker shouldn’t cost more than 300 €.
if the speaker isn’t flat, he should be white or silver - so that my wife will like it too

Get any Chromecast enabled speaker likely cheaper than any Roon ready one and they work well.