The Chromecast Audio, released in October 2015 alongside the second generation Chromecast. This audio-specific streaming device comes equipped with a combination 3.5mm and optical audio output, and will support multiroom audio with a future update.
Internally the Chromecast Audio, like the second gen Chromecast, features three Wi-Fi antennas supporting 802.11ac and 5 GHz connections. Although it is similar to the new Chromecast, it has a 3.5mm audio output in liu of an HDMI cable, and it is only available in black.
- 3.5mm-Optical out combination headphone jack
- Three antenna array
- Dual-band 802.11ac
- Diameter: 52 mm
- Height: 14 mm
- Mass: 30 g
Google: Official Page