I was looking for a small wireless solution to play music in the kitchen. No wires meant no adpators and transformers too. The JBL SoundFly Air plugs directely into any 110/220v AV socket and is set up to work withing a few minutes.
A quick test recorded with a Nikon D800 and hotshoe mounted Rode Video mic linked direct to the camera.
iPad Mini volume set to 45%
There is a short lag when switching the iPad to to AirPlay but nothing serious.
To my untrained audio ear a lovely sound from a very small speaker unit.