2.0 speaker,2.1 speaker,5.1 speaker,usb speaker.

DescriptionSpecifications: P.M.P.O 300Watts RMS 0.5W x 2 Drivers Unit 1.25x2.75 inch-Oval Type Full Range Magnetically Frequency Response 100Hz-20KHz Input Sensitivity 300-500mV RMS for rated power output Controls Power ON/OFF Master Vol Dimension 68x62x170mm (WxDxH)