A cheap and easy way to fling music around your home, Google's Chromecast Audio adaptor gives any speaker a wireless overhaul.
At $59 for the tiny Chromecast Audio adaptor you're entitled to set your expectations low, but it's actually surprisingly good and stands up well against more expensive options like Apple's $129 Airport Express adaptors. Like Apple's gear, the Chromecast Audio offers a slick multiroom option which lets you group speakers throughout your home and play music perfectly in sync.
You need to supply your own powered speakers or amp, the Chromecast Audio is simply a Wi-Fi-enabled dongle. This means you can upgrade your speakers over time, although I'd recommend using matching speakers in adjacent rooms when you're running multiroom audio to avoid a harsh transition as you walk between rooms.
You configure the Chromecast Audio adaptors using the Chromecast app for Android or iOS, similar to setting up the Chromecast streaming video stick. The audio adaptors generate their own Wi-Fi network so you simply connect to that network, give the adaptor a name and tell it the password to your home Wi-Fi network.
Thankfully Google's audio adaptors support both 2.4 and 5GHz wireless networks, with 5GHz your best option to avoid local interference and choppy playback.Advertisement
Source : http://www.smh.com.au/digital-life/computers/gadgets-on-the-go/hands-on-review-chromecast-audio-multiroom-streaming-20160224-gn2zrn.html