EQ with Feedback Help The QF 131 from Peavey is a single channel, 31-band graphic EQ incorporating a low-noise, low-distortion design. Ruggedly constructed for use on stage or in the studio, the unit is housed in a 2U chassis, has 45mm center-detented fader controls with +/-15dB gain/cut, and an LED display indicating output level.Other features include an 18dB per octave 40Hz low-cut filter switch with status LED to help remove rumble from open microphone systems. Balanced inputs and outputs, FLS (Feedback Locating System) circuitry for improved sensitivity, and bypass switches round out the feature set of this graphic EQ. FeaturesSingle channel graphic EQ with 31 bands1/3 octave filter setsCenter-detent 45mm control sliders20Hz to 20kHz effective equalization rangeConstant Q filters+/-15dB boost or cut per bandOutput level LEDs indicate -12dB to +12dB18dB per octave 40Hz low-cut filter with status LEDFLS (Feedback Locating System) circuitry for improved sensitivityXLR and 1/4" TRS inputs and outputs for balanced or unbalanced operationBypass switch with status LEDSpecificationsFilter Type: Graphic Constant QNumber of Channels: SingleInputs 1 x XLR1 x 1/4" TRS phoneOutputs 1 x XLR1 x 1/4" TRS phoneMaximum Input Level: +18dBVFrequency Bands: 31Bandwidth: 1/3 octaveRange (Boost/Cut): +/-15dBMaximum Output Level: +21dBV, balancedFrequency Response: 20Hz to 20kHz, +/-1.0dBDynamic Range: Not specified by manufacturerNoise: 95dBV (filters in and flat)Power Requirements: 120VAC, 60HzDimensions: 19 x 7.4 x 3.5" (483 x 187 x 89mm)Weight: 7.8 lbs (3.5kg)Specialties: 18dB per octave 40Hz low-cut filter with status LED