Fiber Optic to RCA cable

Chromecast Audio works right out-of-the-box with your existing speaker systems that have an aux input or line input. Chromecast Audio also works on systems with RCA inputs and optical digital inputs. Note: RCA and optical cables are not included with your Chromecast Audio.

Here's a list of compatible cables, plugs, and speakers:

Compatible cables and plugs

1. 3.5mm stereo cable - Included with the Chromecast Audio

   This provided 3.5mm cable supports a stereo analog audio signal, and is designed to plug into input ports labeled things like "AUX IN", "LINE-IN" or some symbolic icon representing the same. 3.5mm stereo inputs are commonly found on desktop computer speakers, media player docking speakers, and compact portable speakers.

2. 3.5mm-to-RCA cable - Not included with Chromecast Audio

   This cable is a commonly available retrofit cable that converts the stereo analog output from Chromecast Audio into a stereo RCA connection.
   RCA inputs are common on many people's favorite stereo setups they've owned for years, and sometimes decades, like AV receivers, mini/micro bookshelf systems, and studio monitor speakers.

   RCA Cable for Chromecast Audio - Chromecast's official RCA accessory cable ensures audio performance and compatibility and looks great. Purchase here. Standard 3.5mm-to-RCA cable
3. Mini-TOSLINK-to-TOSLINK (optical) cable - Not included with Chromecast Audio

   This cable is another commonly available adapter that provides access to the optical digital audio output on Chromecast Audio. Digital audio is popular among users with high power speaker systems.
   TOSLINK inputs are commonly found on modern AV receivers, soundbars, and some high-end desktop speakers, and studio monitor speakers.

   Optical Cable for Chromecast Audio - Chromecast's official optical accessory cable ensures audio performance and compatibility and looks great. Purchase here. Standard Mini-TOSLINK-to-TOSLINK (optical) cable

For an optimal listening experience, please note:

• Make sure your audio cable is tightly plugged into your speaker
• Plug your Chromecast Audio into the wall using the USB cord and power adapter

Compatible speaker inputs

• 3.5mm stereo input (can be labeled Input, Analog, or Aux on some speakers)
• RCA input
• Optical input (can be labeled Digital or S/PDIF on some speakers)

Active vs. passive speakers

• Chromecast Audio works with "active speakers" where power amplifiers are integrated as part of the speaker. Common active speaker systems are Bluetooth speakers, soundbars, docking speakers, portable speakers, desktop computer speakers, studio monitors, etc.
• Chromecast Audio can also drive "passive speakers", however there must be an amplifier in between Chromecast Audio and the "passive speakers", which do not have amplifiers built into them. Amplifiers exist in Stereo receivers, AV receivers, mini/micro bookshelf units, and as standalone amplifiers for higher-end Hi-Fi component systems.

Chromecast Audio provides relatively low-power, or line-level audio signals to a speaker system. This signal is common for connection between audio systems, but is not in itself powerful enough to drive high enough audio listening levels for home listening. For this, Chromecast Audio depends on a power amplifier to amplify the signal to home audio listening levels

Now that you have the right speakers and cables, let’s learn how to plug in Chromecast Audio.