Studio Grade Audio Performance Anywhere: a must-have subwoofer isolation riser for any home studio. High-performance acoustic isolation pad eliminates vibrations and ensures crisp, clear speaker sound. Thick Sound Dampening Foam Riser: Premium quality high-density foam pad made from thick foam, EVA material, and a sturdy MDF board for extra stability and optimal sound dampening performance. Universal 12-15 Inch Subwoofer Isolation Pad: Compatible with all 12-inch, 13-inch, or 14-15-inch subwoofers. Universal subwoofer pad fits all subwoofer, loudspeaker, or speaker models, types, and brands. Excellent Vibration Reduction And Stabilization: Reduce subwoofer-generated vibrations and enhance noise isolation anywhere.