Digital equalizer 1.Dual 31-Band 2.RFI filtering 3.XLR ,1/4"phone, ... connector 4.Total level:+-12dB/+-6dB Professional graphic digital equalizer1.Dual 31-Band 2.RFI filtering 3.XLR ,1/4"phone ... ,2K, 2.5K,3.15K,4K,5K,6.3K,8K,10K,12.5K,16K,20K (Hz)12.Variable range ±12dB / ±6dB13 ... .Dimensions ( W×D×H ): 482×245×88mm17Weight: 4.7kg Professional dual 31-Band graphic equalizer