The Google Chromecast Audio is very easy to install, easy to use, very affordable and yet, waisted money as far as I’m concerned.
When Google introduced their first Chromecast device in 2014, I was impressed with both the simplicity in use and the picture quality - for as far as that can be judged by internet video. At the end of 2015 Google introduced a second generation and added an audio version, both costing € 39. It was the audio version viewers wanted my judgement on. It connects to an amp or active speaker, using the supplied 14 cm short 3.5 mm jack to 3.5 mm jack cable. You can also use an optional 3.5 mm jack to stereo RCA cable for analogue or an optical mini-TOSlink to TOSlink cable for digital. It promises audio streaming over wifi and thus at an higher bandwidth than is possible with Bluetooth. Like the video variant, Chromecast Audio is designed to be controlled from a tablet of smartphone running Android or iOS. And in contrast with Apple TV, you point the Chromecast Audio towards a source and have it play directly from that source. The music is not sent through your smart device so you can put it in stand-by or even switch it off as soon as the music plays. This is great for those that always suffer from flat phone batteries at the end of the day. The Chromecast Audio does need external power, a power supply is provided in the box.