Auralex ProPanel Wall Absorption Panel - 1-Inch 2x4 Foot with Beveled Edge (Obsidian Fabric)Auralex ProPanels are high quality, fabric covered acoustical absorbers, designed to reduce unwanted room reflections, slapback and flutter echoes. ProPanels have a specialized fiberglass core and neatly hardened edges for a crisp look. From stock panels for small room environments, to custom panels that enable full frequency control in larger spaces, ProPanels provide top shelf appearance and performance that is unmatched. For additional low end