The dbx iEQ-31 is an advanced graphic EQ with two 31-band channels of 1/3-octave equalization; an amazing 10 Hz to 22 kHz frequency response; AFS feedback suppression; dbx Type V noise reduction and limiting; dynamic range >110 dB; ±12 dB input gain range; switchable ±6 or ±15 dB boost/cut; 40 mm faders; XLR, 1/4" and Euroblock I/O; and an intuitive user interface with comprehensive output and gain reduction metering.