Full Range?? Class A/B?? PWM MOSFET Power Supply?? High/Low Level Input</br>LED Power Status Indicator?? Phase Switch?? Adjustable Input Sensitivity</br>Variable Bass Boost?? Subsonic Filter?? Low Pass Filter?? High Pass Filter</br>Soft Remote Turn-on?? Thermal?? Short and Overload Protection?? Blue Illumination</br></br>Product Description</br></br>BOSS Audio Systems low profile amplified subwoofer enclosures are perfect for a system that needs more bass?? yet lacks extra space. Durable?? thin and powerful in design?? perfect for small amplified enclosure solutions.</br><br/>http://www.amazon.com/gp/product/B01G0WTIJ0