The Audioflow 3S 4 Zone Smart Speaker Switch offers seamless wireless control over your multiroom sound system. With Wi-Fi connectivity youll be able to remotely manage multiple pairs of speakers using the Audioflow IOS/ Andriod app. Fitted with four dedicated speaker zones the Audioflow 3S 4 offers the most connectivity options in the 3S range. This makes it the ideal companion to multiroom hi-fi installations. This speaker switch even supports Amazon Alexa meaning you can command music to start in zones around your home using only your voice. For hi-fi traditionalists the Audioflow 4 Zone also features manual on-board controls. With a compact design Audioflow 3S Switches can be seamlessly integrated into your home audio system with maximum positional flexibility.