Available streaming services include: Spotify Connect, Tidal, Amazon Music, Qobuz, Deezer, QQ Music, Internet Radio, and Podcasts. Each speaker consists of a 280 watt amplifier for the mid range and 100w amplifier for the tweeter. Wireless Streaming features include: Apple AirPlay 2, Google Chromecast, ROON Ready, UPnP Compatible, Bluetooth 4.2 Resolution Up To: 384kHz/24bit depending on connection. Featured Inputs: HDMI eArc, TOSLINK, Digital Coaxial, Analog 3.5mm Auxiliary, RJ45, WiFi bi-amped design with separate woofer and tweeter amplifiers for greater headroom and lower distortion Uni-Q Driver Array technology makes your entire room sound like the sweet spot innovative Metamaterial Absorption Technology (MAT) absorbs high-frequency vibrations to eliminate distortion 5-1/4in aluminum cone woofer amplifier power: 280 watts (Class D) 1in vented aluminum dome tweeter amplifier power: 100 watts (Class AB) connection between left and right speakers: wired (allows 24-bit/192kHz audio) or wireless (allows 24-bit/96kHz audio) frequency response: 45-28,000 Hz (±3 dB) peak SPL: 108 dB MDF enclosure with elegant curved front baffle bass-reflex cabinet with patented offset, flexible port for reduced midrange coloration Wireless features: Bluetooth 4.2 with aptX for high-quality audio streaming performance built-in dual-band Wi-Fi for audio streaming from your network compatible streaming platforms include Apple AirPlay 2, Google Chromecast and Roon (firmware update required) uPnP for playing music files from your local network KEF Connect app offers comprehensive remote control via your Apple or Android device compatible with popular music streaming apps, including Spotify (via Spotify Connect), Tidal, Amazon Music, Qobuz, and Deezer precise digital signal processing controls allow optimal room integration Connections (located on primary speaker): HDMI eARC (accepts signals up to 24-bit/192kHz) for improved sound.