Digital equalizer 1.Dual 31-Band 2.RFI filtering 3.XLR ,1/4"phone,euroblcok connector 4. ... Total level:+-12dB/+-6dB Professional graphic digital equalizer1.Dual 31-Band 2.RFI filtering 3.XLR ,1/4"phone and euroblcok ... balanced input/output XLR, 1/4" phone, and euroblock connectors10. 2×31 band EQ11.Center frequency 20,25,31.5,40 ... ,400,500,630,800,1K,1.25K,1.6K,2K, 2.5K,3.15K,4K,5K,6.3K,8K,10K,12 ...