For me, these are the right ones

Sound is OK far from hi-fi enjoyment ;-) but fairly balanced. The range in my crow kitchen 6m Bad 12 meters (3! Stonewalls in between 3 closed doors!) Is transferred properly without interference. If I turn off the sending device (my internet radio) I receive also something from the neighbors.
Who goes without cable clutter around the house has all the desired same program. Super and very convenient for example when large plaster :-)
One of the two speakers I have also supplied with AA batteries to times "quickly" to have sound in the bedroom or in the hallway without always equal take the power supply!

Tip: sound is always balanced if you have the opportunity providing the signal device to use a "LINE" output
Headphone outputs work, but sound (because often frequency corrected) something "quäkig"