BeoPlay A9 - White and Beech BeoPlay A9 is a one-point music system from B&O PLAY by Bang & Olufsen Stream your music via Airplay for Apple products or DLNA for Android. Spotify Connect built in On-device controls: Swipe hand across the top sensor to turn volume up or down. Rest hand on the top sensor for a few seconds to mute sound. Place your A9 around your house or mount it on your walls (wall mount sold separately), no matter where you position it, the sound adaptation switch will ensure that it's always sounding beautiful Effective frequency range: 33.1 - 25,000 Hz