You will be pleasantly surprised by the performance of this compact active subwoofer, born to complement the low-frequency extension of small loudspeakers equipped with three or four inches woofer. The internal amplifier has the required controls for the correct interface with other components of the audio system and the listeningroom . The double reflex duct, located at the back of the cabinet, minimizes turbulence in the air flow. The limited dimensions, combined with the clean and refined design of the chassis , make it easy to insert it into any kind of furniture. Mio Sub is finished in matt black vinyl.