ncreasingly, high sound quality is required even in previously not-so-performing sound systems. Bars, restaurants, pubs, stores today use sound-music, video games, home cinema, etc. – not only as a simple background, but as a real marketing tool, where sound quality is an important ingredient. This subwoofer is designed to be placed in spaces that are normally not sufficient to place a subwoofer; but despite their slim look, housing volume, and high-excursion woofer, they deliver bass that is truly worthy of much larger systems. The built-in Class-AB amplifier is stable, designed for long-term use and equipped with an auto-power function (to reduce power consumption), limiter, thermal and overload protection. In addition to the stereo line input, there is also a stereo power input (low impedance) that allows direct connection to amplifier outputs or speakers of an existing system, which is very practical if distances or other factors do not allow traditional connections to the mixer or link outputs of an amplifier.