Dj & studio console mixer system; multi 4-channel audio source mixing; built- in Bluetooth wireless receiver; FX (analog effects) & 16 bit DSP processor; Direct-to-Computer connect & sound record ability; LCD digital display & front panel control center; rotary adjustment knobs & LED indicator lights; MP3 digital Audio file compatibility; USB interface: MP3 flash drive Reader/computer connection; connect & stream Audio from external devices; (2) 1/4’’ (L/R) main outputs; (2) XLR/14’’ combo Audio line/microphone inputs; 1/4’’ mono + Stereo inputs; 1/4’’ send + Return inputs; 1/4’’ headphone jack; Stereo level fader/slider; output signal level indication; bus audio control sound routing; pad channel source input switch; independent Channel input audio configuration; gain high Mid low FX/send level base + tone adjustment; +48V phantom power control; power on/off switch; used for professional studio applications & on-stage Performances.