Compact speaker delivering big HEOS Sound. Ideal for small to medium sized rooms, such as bedrooms, offices or kitchens. This compact but full-featured speaker plays cloud music, music stored on your phone or tablet, plus USB and NAS sources, too. Meaning you have options. It also features a carefully designed blend of two custom full-range drivers and a two-channel class D amplifier, all controlled with state-of-the-art digital signal processing that was born in the recording studio. Translated from the tech: Big, clear sound from highly tested, recording studio-grade engineering.