Denon heos 1 hs2 wireless hifi system amazingly big sound from a compact portable speaker with high resolution audio support listen to your favourite audio tracks wirelessly via bluetooth and wi fi audio streaming the heos 1 produces amazingly big sound from a compact portable speaker enjoy streaming music from the cloud or local files using the intuitive heos app for ios android and kindle the compact enclosure houses custom dual drivers including a wide range mid woofer and precision dome