F4-USB / F7-USB

● 4/7 channel multi-function mixer             
● Built-in 4.0 wireless Bluetooth                    
● DSP reverberationeffect                       
● Flash drive, MP3 player                          
● Independent adjustment of high and middle woofers                                                
● The 3 section channel equlization                  
● 2 set of auxiliary transmission                        
●+48V Phantom Power                                
● Channel EQ:3 Band