Built-in DSP function,Powerful DSP functions with optimisation for 4 sound programs: Music, live, language, DJ / CLUB
Built-in USB solt for MP3 Media center
Built-in Bluetooth function
Built-in AUX input function
Built-in TWS function
Built-in system control and 2-way speaker protection 
Buit-in 2-Channel mixer with individual microphone / line inputs and volume controls