The PV 231EQ dual 31-band 2/3-octave graphic EQ features Peavey's legendary low-noise, low-distortion design. The PV 231EQ has center-detented fader controls and offers selectable ±6 dB or ±12 dB gain over frequencies ranging from 20 Hz to 20 kHz and an LED display indicating level. Other features include variable-state low-cut and high-cut filters, XLR balanced inputs and outputs and bypass switches. PV 231EQ filters are set at ISO center frequencies within 3% accuracy.