Anti-vibration structure 

Complete protection circuit for speaker system/overload/high temperature/ short circuit protection 

Volume limit device limits the maximum volume to avoid the misoperation 

Dual echoes function(can be switched to one echo) features stereo echo effect to extend the microphone vocal echo width 

Feedback suppression function avoids howling 

3 band EQ for microphone and music 

Recording and music playing function for convenient connection with the external power amplifier and recording production 

Designed with effect output connector for convenient connection with the external effect 

Remote control for convenient adjustment(microphone and music volume adjusting /input selection/mute) 

Parallel output design of A/B two groups enable to connect 2 pairs of 6-8Ω speaker cabinets when power allowed