Technical Pro EQ5400 Professional Dual 10 Band Equalizer scrim clamps coaxial design gives the monitor clearance auto 15 coaxial design gives the monitor amazing portability with impeccable sound Built in Auto programs and a Sound Activated mode are also available for set it and forget it action key ranges of sound come across too weak or strong relative to other ranges resulting in output that no longer faithfully replicates sound and can even damage speakers Equalization points are spread out over the whole spectrum of human hearing to give you the ability to boost and cut output wherever the sound takes you from highs to lows