· Turns your existing stereo system into a smart system · Stream Hi-Res audio up to 192 kHz/24 bit. · Built-in 2.4G/5G WiFi, wirelessly stream lossless audio · Multi-Room, synchronized audio experience Group WiiM    Mini with AirPlay 2 speakers, Alexa devices, or another    WiiM Minis · WiiM Home app for Android and iOS · Chromecast Audio & Works with Google. WiiM Pro lets you    stream music, TV audio, radio station, podcast and local    content from any Chromecast-enabled apps to one or    multiple audio devices at the same time · AirPlay 2 - Stream audio from your iPhone or Mac computer    to one or multiple audio devices at the same time. · Spotify Connect - Use your Spotify app as your remote to    control music playback to your WiiM Mini · Works with Siri and Alexa or Tidal Connect  · Audio Output/Audio Input: Line out, digital Coaxial Out,    digital Optical SPDIF Out/Line In, digital Optical SPDIF In,    Bluetooth 5.0, Ethernet (100m)