=Chromecast Audio is a small device that plugs into your speaker for streaming music over Wi-Fi.
=Once set up, simply use your iPhone®, iPad®, Android phone or tablet, Mac® or Windows® laptop or Chromebook to cast your favourite tunes to the best speakers in the house.
-> I have connected it to Marantz PM6005 through optical cable. Sound quality is equally good as compared to MP3 song played through CD/DVD player. Output through aux cable is also good. Very easy to install and connect wirelessly. It is very useful if you have a large collection of songs in digital format, as it is easy to search the list through app. It is also good to search and play songs online. I am playing songs through Saavn and Wynk Music.
It is easy to use, handy, multiple aap support and value for money.