The fundamental principle behind Echo Busters is simple. Before you spend another dollar on audio equipment, upgrade the one component that will give you back your greatest rewards, your room! Only with an acoustically balanced room can you attain state-of-the-art sound reproduction. Echo Busters improve the acoustics in your room, creating a truly realistic soundstage. Echo Busters treat rooms effectively, inexpensively and, best of all, decoratively. Echo Busters products are easy to use and install. The lightweight Echo Buster and Double Buster panels are left free-standing (with optional bases) or hung like pictures on a wall. One small nail holds each panel. Bass Busters can be put into corners or left anywhere in the room, depending where the sound benefits most.