JBL has introduced the SoundFly Air, a plug-in speaker that plugs directly into your wall outlet. All you need is an Apple AirPlay-enabled audio device, such as an iPhone, iPad or iPod touch, and a home Wi-Fi connection.

A free, downloadable app gives you additional functionality so you can browse music with cover art, adjust volume and tone, and fully customize the digital signal processing (DSP) to get the best sound wherever you plug it in, according to the folks at JBL. The SoundFly Air packs 20 watts of sound. It’s available for pre-order for US$199 at  http://www.jbl.com/estore/jbl/us/product/productDetails.jsp?pid=JBL%20SOUNDFLY%20AIR .