DBX 2031 31-Band Equaliser


Available on backorder


DBX 2031 31-Band Equaliser

DBX 2031 Single 31-Band Equaliser with Noise Reduction 2U 20 Series EQs. You used to have to settle for second best in a reasonably priced EQ but not any more. With the new 20 Series from dbx® Professional Products you get a great EQ circuit, a graceful yet powerful limiter and the revolutionary new design of the Type III Noise Reduction.

Product Features

  • Revolutionary instant encode/decode Type III® Noise Reduction in-circuit at the push of a button. Increases S/N ratio by up to 20dB
  • Patent-pending PeakPlus® Limiter threshold range from 0dBu to +24dBu (off) can transparently tame the wildest hits or the subtlest nuances of any signal
  • An extremely high quality EQ, patent-pending Type III Noise Reduciton, and the elegant new PeakPlus Limiter all in one great sounding box
  • Four segment LED bargraph for BOTH Gain Reduction AND Output Level offers the most comprehensive visual feedback available
  • Status LEDs offer visual feedback for all settings on the front panel

Product Inputs

  • Connectors: 1/4″ TRS, female XLR (pin 2 hot), and barrier terminal strip
  • Type: Electronically balanced/unbalanced, RF filtered
  • Impedance: Balanced 40k ohm, unbalanced 20k ohm
  • Max Input Level: >+21dBu balanced or unbalanced
  • CMRR: >40dB, typically >55dB at 1kHz


  • Connectors: 1/4″ TRS, male XLR (pin 2 hot), and barrier terminal strip
  • Type: Impedance-balanaced/unbalanced, RF filtered
  • Impedance: Balanced 200 ohm, unbalanced 100 ohm
  • Max Output Level: >+21dBu balanced/unbalanced into 2k or greater, >+18dBm balanced/unbalanced (into 600)

System Performance

  • Bandwidth: 20Hz to 20kHz, +/-0.5dB
  • Frequency Response: <10Hz to >50kHz, +0.5/-3dB
  • Dynamic Range: 109dB 115dB
  • Noise Reduction In: (+/-6 and +/-15dB range)
  • Signal-to-Noise: >102dB, unweighted, ref: +4dBu, 22kHz measurement bandwidth
  • Dynamic Range: >120dB, unweighted
  • Noise Reduction Out: (+/-6dB range)
  • Signal-to-Noise: >94dB, unweighted, ref: +4dBu, 22kHz measurment bandwidth
  • Dynamic Range: >120dB, unweighted
  • Noise Reduction Out: (+/-15dB range)
  • Signal-to-Noise: >90dB, unweighted, ref: +4dBu, 22kHz measurement bandwidth
  • Dynamic Range: >108dB, unweighted
  • THD + Noise: <0.04%, 0.02% typical at +4dBu, 1kHz
  • Noise Reduction: Up to 20dB of dynamic broadband noise reduction

Function Switches

  • Type III NR: Activates dbx® Type III® Noise Reduction
  • EQ Bypass: Bypasses the Graphic Equalizer section in the signal path
  • Low Cut (recessed): Activates the 40Hz 18dB/octave Bessel high-pass filter
  • Range (recessed): Selects either +/- 6dB or +/-15dB slider boost/cut range


  • Output Level Meter: 4-LED bar graph (Green, Green, Yellow, Red) at -10, 0, +10, and +18dBu
  • Gain Reduction Meter: 4-LED bar graph (all Red) at 0, 3, 6, and 10dB
  • Type III® NR Active: Yellow LED
  • EQ Bypass: Red LED
  • Clip: Red LED
  • Low Cut Active: Red LED
  • +/-6dB range: Yellow LED
  • +/-15dB range: Red LED

Power Supply

  • Operating Voltage: 100VAC 50/60Hz, 120VAC 60Hz
  • 230V: AC 50/60Hz
  • Power consumption: 15W
  • Main Connection: IEC receptacle


  • Dimensions: 3.5″ H X 19″ W X 7.9″ D (8.9cm x 48.3cm x 20.1cm)
  • Weight: 8.5 lbs. (3.9 kg)
  • Shipping Weight: 9.5 lbs. (4.3 kg)