Chromecast Audio, Google’s dongle that turns any speaker with an auxiliary jack into a wireless speaker, has only been out in the wild a few months, but it’s already getting some new powers that further justify the dinky dongle.
Announced on Google's Chrome blog, the most significant new feature is the ability to sync together multiple Chromecast Audio dongles so that they all play the same thing. So if you’ve got one hooked up to the speakers in your living room and one connected to the speakers in your bedroom they can all play the same music, assuming they’re within range of each other. No need to run out and splurge on a Sonos any more, it seems.
Additionally, the device is getting support for high-resolution audio up to 96kHz/24-bit (that’s much higher resolution that the 44.1Khz/16-bit CD-quality standard. (We can argue another time about whether or not high-resolution audio makes any sense.)
So, it's definitely one of the cheapest ways to tech your old school stereo new wireless tricks. With each new feature, it becomes more and more attractive to many people seeking an easy way to soup up their speakers.