✅【PLAY YOUR FAVOR MUSIC TO EVERY ROOM】The WS66i provides 50W x 2 amplification (per each zone) to 6 audio zones and hookup 12 speakers, enjoying the premium sound quality from a wide range of passive in-ceiling, in-wall or the outdoor speakers. Can be expanded to total 18 zones to works with our expansion unit (sold separately). ✅【STREAM MUSIC WITH IOS & ANDROID DEVICE】: Stream your favor music from the iPhone or Android tablet/smart phone, work with most popular streaming services, such as Spotify, Tidal, Pandora,TuneIn, DEEZER, iHeartRadio and more. ✅【FULL WIRELESS APP CONTROL】: Simply download the WS66i Control App in the Google Play and Apple App Store, the WS66i App is easy to setup and get the network connected within 60 seconds, allow you to do the Input Source Selection, Adjust Sound Volume, EQ, Mute and Customize Rename for any of the zones. ✅【INDIVIDUAL MUSIC STREAMERS BUILT-IN】: The WS66i provide 6 different inputs, and the 2 built-in streamers allow you to use one cellphone to do 2 different music App at the same time to any zones, or 2 (as multiple users) can use their cellphone to stream the different music to any specific zone. Means 6 zones can be played different audio, or all 6 zones played the same music as the "Party Mode" setup. ✅【SUPPORT AIRPLAY / DLNA / UPnP / NAS / USB】SUPPORT AIRPLAY / DLNA / UPnP / NAS / USB: Supports AirPlay/DLNA/UPnP, NAS and Local(on device) music play and a wide range of online music services. ✅【ADDITIONAL OUTPUT FOR EACH ZONE】: Each zone output from the WS66i has both “Speaker Out” and “Preamp Out”, the PREAMP OUT function allow the user to connect the external power amp + additional speakers (for more speaker connection), or the powered/active subwoofer speaker for louder sound level required. ✅【3 YEARS WARRANTY】:The WS66i carry our exclusive 3-year factory warranty.Our special technician will service the WS66i to the original owner under the warranty period. The WS66i (AMP only) allow to you control by the supported APP without using the keypads or IR remote control. This whole-home audio system brings you the advanced Generation D technology, it is a functional, easy-to-install, highly compatible, expandable and used-friendly audio distribution system. With few simple steps to install, it provides up to W power by class D amplifier and distribute at most to 18 zones which all can be controlled by APP. Simply connecting the WS66i to the local Ethernet network, it let you access a wide variety of music from the Built-in streaming services or stored on the Smartphones. Two USB ports on the front panel for playing music files from USB storage devices. An Optical digital input to manage the sound of a flat screen or a CD player to have high resolution of sound quality in each zone. WS66i-AMP Included: WS66i Amplifier x 1 Power Cord x 1 User Manual x 1