8″ woofer & 3.5″ piezo tweeter; All-in-one entertainment sound system; Bluetooth(R) enabled; Dual speaker towers; 1 active & 1 passive; Fully featured 3-channel mixer; 3.5mm aux input; Two 1/4″ microphone inputs; RCA stereo input & output; Speaker output for passive speaker; USB flash & SD(TM) Card readers with FM radio; USB slot doubles as a device charging port; Display screen shows number of songs, play time & FM radio frequency; Master volume control; Built-in crossover network; Ported enclosure for added bass response; 35mm speaker stand mount; Heavy-duty handles for transporting; 800W peak power/400W RMS @ 4ohm ; Sensitivity: 90dB @ 1W/1m; Crossover freq: 3.5kHz; Freq resp: 20Hz-20kHz; Combined dim: 20.3″H x 19.7″W x 12.6″D;