Monoprice Select 4-Inch 2-Way Bookshelf Speakers (Pair), Black Finish Sound Quality: Life is too short for speakers that don't sound great! We believe that the whole point of listening to music is to hear it as the artist intended. Style: While Monoprice believes in function over form, there is nothing wrong with having speakers that look good, too. The simple yet elegant appearance of the brushed black finish is complemented by the black woofer cone and tweeter dome. Versatile: Select Series speakers from Monoprice sound big enough to be used as the main left/right speakers, yet are small enough to be used as satellite speakers in a 5.1 or more channel speaker system. 50 watts maximum input power 4.5&#034; cone woofer with rubber surround 0.75&#034; silk dome tweeter 75Hz ~ 20kHz frequency response Chamfered black cloth grill 6 ohms impedance 81dB sensitivity 5-way binding post terminals