PREMIUM CINEMATIC SURROUND SPEAKER PAIR - The Polk Signature Elite ES20 Bookshelf Speakers pair features Dynamically Balanced Acoustic Array with Precision Crossovers, 1" Terylene Tweeter & 6.5" Woofer that deliver clear sound in a lifelike soundstage NOT ONLY HEAR, BUT FEEL THE HEART-THUMPING BASS - Polk's Patented Power Port Technology delivers 3dB louder bass than conventional ported home audio speakers, minimizing turbulence & distortion so you do not miss detail in movies, music, and games REALISTIC SOUND REPRODUCTION - ES20 Polk Audio Speakers' high sensitivity and 4- & 8-Ohm compatibility delivers spacious, enveloping, true to life music & audio from most amplifiers or AV receivers, including Dolby Atmos and DTS:X surround sound AVRs LOOKS TO KILL - The Signature Elite series home theater speakers, with their bold, modern looks, are sure to make heads turn & set feet tapping, no matter where you are sitting in the room. Their classy style will make a statement with any home decor MAXIMUM PLACEMENT VERSATILITY - Use ES20 as side, rear or elevation surround speakers for a cinematic experience. Place it on a speaker stand (sold separately) or as wall speakers for directional firing via screw inserts and keyhole slots BUILD YOUR DREAM HOME THEATER SYSTEM - The timbre matched Polk Speakers ensure seamless speaker-to-speaker blending with the Signature Elite series. Combine with ES50 tower pair, ES30 center channel & any sub for a complete 5.1 surround setup