1.Speaker: 8 inch paper cone woofer 100 magnetic, 3 inch tweeters (8 * 1 + 3 * 1).                                                 
2.Power: the actual output power is 90 w                        
3.The manic ratio: about 87 db, the distortion degree of 3% or less                                       4.USB/SD jack, export can also match FM radio                      
5. With 5-band equalizer high and low adjustment                           
6.With two wired microphone interfaces , a guitar input, and audio input interface                                                      
7.Match a single wireless microphone (microphone reverberation adjustment)                                                 
8.Built-in battery is 12 v and 4. 5 A,  working 5 hours on the maximum volume.  Ac/dc electric can dual-use.                                             
9.Packing size: high * thick * width is 40 * 29.5 * 36.5 Cm ,                   Gross weight: 11 kg