With Optical/Bluetooth/USB/PC Connectivity Adopts a 24-bit data bus and 32-bit DSP. The MUSIC channel features a 7-band parametric equalizer. Music to Main Output High-Pass Filter (HPF): 12 dB-24 dB (0 Hz-303 Hz) The MIC channel is equipped with a 15-band parametric equalizer, and the microphone has a compression/limiting function. The main output is furnished with a 5-band parametric equalizer and includes a compression/limiting function. The center output, rear outputs, and subwoofer output each come with a 3-band parametric equalizer. The microphone offers 4 feedback suppression modes, with selectable options: OFF/1/2/3. Supports storage of 16 modes. The microphone output, main output, center output, subwoofer output, and rear outputs all feature compression/limiting and delay functions. Built-in administrator mode and user mode; parameters adjusted in user mode cannot be saved. The unit is equipped with a full-function menu and can also be configured via a powerful PC interface.