Audio Line-in connections Auto-detecting analog (RCA) line-in connection. Amplifier Class-D. Rated output 110W RMS (2x55W continuous average power into 8 ohms, THD+N<0.02%) with both channels driven, 22Hz-20KHZ-AES17 measurement bandwidth. Speaker Connections Spring binding posts (in North America the CONNECT:AMP has the combined spring binding post / banana jack connectors). Subwoofer out Auto detecting RCA type, 80Hz crossover Music Music services supported Sonos works seamlessly with Amazon Cloud Player, AUPEO!, Deezer, iHeartRadio, JB Hi-Fi NOW, JUKE, Last.fm, MOG, Pandora®, Rdio®, Rhapsody®, SiriusXM™ Internet Radio, Slacker® Radio, Songl, Songza, Spotify®, Stitcher SmartRadio™, TuneIn, Wolfgang’s Vault®, WiMP, and downloads from any service offering DRM-free tracks. (Service availability varies by region.) Operating systems (for stored files) Windows® XP SP3 and higher; Mac OS X v10.6 and higher; NAS (Network Attached Storage) devices supporting CIFS Internet radio supported Streaming MP3, WMA Audio formats supported Support for compressed MP3, iTunes Plus, WMA (including purchased Windows Media downloads), AAC (MPEG4), AAC+, Ogg Vorbis, Audible (format 4), Apple Lossless, Flac (lossless) music files, as well as uncompressed WAV and AIFF files. Native support for 44.1kHz sample rates. Additional support for 48kHz, 32kHz, 24kHz, 22kHz, 16kHz, 11kHz, and 8kHz sample rates. Note: Apple "Fairplay", WMA DRM and WMA Lossless formats not currently supported. Previously purchased Apple "Fairplay" DRM-protected songs may be upgraded. Album art supported JPEG, PNG, BMP, GIF Apple AirPlay music sources Connect an Apple AirPlay® music source, such as an Apple AirPort Express® to any Sonos player with line-in. Enjoy songs from your iPhone®, iPad™ or iPod touch® in any or every room of the home.Connect an Apple AirPort Express® to any Sonos player via line-in and stream songs from your iPhone®, iPad™ or iPod touch® all over your home. Playback modes Crossfade, shuffle, repeat Playlists supported iTunes®, Rhapsody, WinAmp®, Windows Media Player®, and MusicMatch™ (.m3u, .pls, .wpl) Networking* Wireless connectivity SonosNet, a secure AES encrypted, peer-to-peer wireless mesh network Network bridging 2-port switch (10/100Mbps, auto MDI/MDIX) allows Ethernet devices to connect through SonosNet General Dimensions (H x W x D) 3.50 x 7.28 x 8.15 in. (89 x 185 x 207 mm) Weight 5.1 lb (2.3 kg) Power Supply AC 120/240, 50-60 Hz, user-switchable Package contents SONOS CONNECT:AMP, power cord, flat Ethernet cable, Quickstart Guide with setup CD (Windows XP SP3, Windows Vista or Windows 7, Windows 8; Mac OS X v10.6 or higher) Storage temperature -20°C to 70°C Front panel buttons Volume and Mute Front panel lights Indicate player status and Mute status Product finish Anodized precision machined extrusion aluminum case. Aluminum casing also facilitates passive cooling Multi-language support Sonos System Software supports : Danish, Dutch, English, French, German, Italian, Japanese, Norwegian, Simplified Chinese, Spanish, Swedish and Brazilian Portuguese. Operating temperature 0°C to 40°C