Edifier USA S550 5.1 Multimedia Audio Speaker System (Discontinued by Manufacturer) 5.1 speaker system with 10 inch subwoofer 3 1/2 midrange drivers and 25mm silk domed tweeters Dual passive bass reflection port to enhance bass performance Magnetically shielded drivers for all speakers Equipped with a 5.1 channel RCA input and Auxiliary input Multifunctional wired controller with 2 1/2 inch LCD display Headphone audio output located on the wired remote controller Wooden MDF housing for all speakers Multifunctional wireless remote controller included