Acoustic Panels: The sound insulation cotton enhances the sound clarity and absorbs the sound field by absorbing the first reflected sound.Wedge size,Designed to hold up to 21 lb without changing the shape. Perfect for reducing echo such as Studios, Recording Studios, Vocal Booths, Control Rooms, Offices, Home Studios, Home Entertainment Theaters, Gaming Rooms, and Home Offices.more enjoyable sound by effectively controlling unwanted reverb and echo. Designed with multiple configurations allowing you to move the monitor isolation pads into a versatile array of angles for the sound quality.Improve the accuracy of your entire monitoring system by stabilizing and absorbing audio frequencies, do a good job at dampening noise and vibration. Principle of operation: Produce clearer sound by reducing vibration and low-end distortion. Can produce more accurate bass response, by eliminating sympathetic resonance in the room, improve the sound wave clarity of the studio display. Scope of application: It can accommodate a variety of different sizes of monitors, Eliminate a majority of unwanted levels of high frequency sound waves, stop the bass reverberating without dulling the soundSuitable for Amplifiers, Subwoofers, Loudspeakers, Shelf Speakers, Portable Speakers, etc. colour:Black Material:Polyurethane foam size:28 x 19 x 4cm Package Contents: 2 x Speaker Sponge Pad Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.