QFX SBX-412401BTS is a professional speaker system with a variety of features that enhance your audio experience. It has multiple input options including MIC, Guitar, Line, and AUX, allowing you to connect various audio sources. The speaker offers adjustable controls for Microphone (MIC HIG/MID/BASS, MIC VOL, DELAY, ECHO), Guitar (GUITAR HIG/MID/BASS, GUITAR VOL), and Music (TREBLE, BASS). It supports Bluetooth connectivity, enabling you to wirelessly stream music from your smartphone or other Bluetooth-enabled devices.