This Wi-Fi speaker has excellent sound quality to match its convenience
Good Gear Guide.au
2 February 2013
Summary: Pioneer’s XW-SMA4 is its premium Wi-Fi hi-fi speaker, with the $100 premium over the cheaper XW-SMA1 translating to a built-in subwoofer. If you listen to a lot of music, or listen to it loud, buying the SMA4 is a no-brainer, but it’s an expensive product that’s got stiff competition from Sonos and Libratone.