Output power: left track right sound channel 3 W * 2 (4 Ω) 1, digital active speakers 1 1, digital display input sensitivity: more than 400 mV 2, 1 2, audio connections with the players, support SD, MMC card, USB card, can play MP3, WMA music format. SNR: frequency 82 dB 3, product description article 1 3, intelligent remote operation system: the available, with FM function distortion rate: 0.7% or 4, product certificate a 4, perfect sound: low frequency low forceful. Intermediate frequency full sleek, glittering and translucent get rid of high frequency, the overall elastic layers. Frequency response: 60 Hz-20 KHz 5, USB cable article 1 5, any audio link: MP3, iPod and PSP, CDS, DVDS, music mobile phones, computers, and a walkman. Speaker: high 50 mm, bass 78 mm 6, battery a 6, LEA nondestructive energy amplification technology; Internal dynamic exchange natural cooling, highly stable ?