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DBX 231s *USED*

DBX 231s *USED*

Dual Channel 31-Band Graphic Equalizer

Exceptional sound and rugged reliability.

When the pros need an EQ, they turn to dbx. With a proven track record that spans four decades, dbx EQs are the industry standard for touring, studios, and audio installations. With the dbx heritage of revered pro EQs, the 231s meets the needs of the most demanding sound reinforcement environments, while offering the simplicity of straightforward controls. 

The dbx 231s includes two 31-band channels of 1/3-octave equalization, ±12 dB input gain, switchable ±6 dB or ±12 dB boost/cut range, 20mm nonconductive sliders, an intuitive user interface, and output level metering. From its extended 10Hz to 50kHz frequency response and 112 dB dynamic range to the quality componentry and meticulous attention to detail, the 231s offers exceptional sound and rugged reliability that guarantees you will always sound your best. 

Sure to find a home in the studio, on tour and with installed sound venues, the dbx 231s is destined to take its rightful place in the lineage of great dbx signal processors that are the professional's choice in signal processing. With such affordable quality, there's no longer any excuse for compromising your sound. 

  • Dual 31-band, 1/3-octave Constant Q frequency bands
  • Switchable boost/cut ranges of ±6 or ±12 dB
  • Front panel bypass switch
  • ±12 dB input gain range
  • 4-segment LED ladders for monitoring output levels
  • XLR and TRS Inpts and Outputs
  • Frequency Repsonse of 50kHz
  • Dynamic range of greater than 108dB

With such affordable quality, there's no excuse for compromising your sound.


231s Dual Channel 31-Band Graphic Equalizer

  • Input 
    Connectors: 1/4" TRS, female XLR (pin 2 hot) 
    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) 
    Type: Impedance-balanaced/unbalanced, RF filtered 
    Impedance: Balanced 100 ohm, unbalanced 50 ohm 
    Max Output Level: >+21dBu balanced/unbalanced into 2k ohm or greater 
    >+18dBm balanced/unbalanced (into 600 ohm) 

    System Performance 
    Bandwidth: 20Hz to 20kHz, +0.5/-1dB 
    Frequency Response: <10Hz to >50kHz, +0.5/-3dB 
    Dynamic Range: Typicall >112dB 
    Signal-to-Noise: Typically >95dB 
    THD+Noise: <0.003% 
    Interchannel Crosstalk: <-90dB, 20Hz to 20kHz 

    Function Switches 
    EQ Bypass: Bypasses the graphic equalizer section in the signal path 
    Low Cut: Activates the 50Hz 12dB/octave high-pass filter 
    Range: Selects either +/- 6dB or +/- 12dB slider boost/cut range 

    Power Supply 
    Operating Voltage: 100VAC-240VAC 50/60Hz 
    Power consumption: 15W 
    Mains Connection: IEC receptacle 

    Weight: 6.2 lbs.(2.81 kg) Shipping weight 7.9 lbs.(3.58kg) 
    Dimensions: 3.5" (8.9cm) H x 6"(15.24cm) D x 19" (48.26cm) W 
Brand DBX
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