... units 4.CE,ROHS certificate 2.0 usb amplifier speakers system for desktop* Output power:2Watts*2* Frequency Response:100HZ to 20KHZ ... 5090 speaker units.Also can use 1*2822IC or 2*8002ICWelcome to contact our sales,thanks!Specifications Product size( ... mm Founded in 2006, Shinedee Plastics Electronics CO.,LTD mainly manufactures multimedia speakers, including mini speakers, 2.0 speakers,2.1 speakers ...