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dbx 231s Dual Channel 31-Band Graphic Equalizer   

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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, studio...Read More

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OVERVIEW

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.

FEATURES
  • 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.

SPECIFICATIONS

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

    Outputs
    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

    Physical
    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
Reviews
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Review Snapshot

by PowerReviews
dbx231s Dual Channel 31-Band Graphic Equalizer
 
3.6

(based on 5 reviews)

Ratings Distribution

  • 5 Stars

     

    (1)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

100%

of respondents would recommend this to a friend.

Pros

  • Easy to use (3)

Cons

No Cons

Best Uses

  • Performances (3)

Reviewed by 5 customers

Displaying reviews 1-5

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(5 of 6 customers found this review helpful)

 
4.0

Worth the money

By SoundSpot

from Portsmouth, VA

About Me Experienced

Pros

  • Easy To Use
  • Professional Functions
  • Versatile

Cons

    Best Uses

    • Home Studio
    • Mobile DJ
    • Performances

    Comments about dbx 231s Dual Channel 31-Band Graphic Equalizer:

    Ok, so you've probably read the reviews noting the hiss when cutting certain frequencies. Yes, that problem is there. However, if your only going to be using this for studio use during practice or running monitors on stage, it's perfect. I would not record with this item nor would I use it for FOH mixing. DBX makes some higher end EQ's for those applications. One thing I did use it for was to EQ my Triple Driver IEM's. It did a great job for that. Overall for the money it's a good product.

    Comment on this reviewHelp Icon

     
    5.0

    This Is A Great Equalizer

    By Rick

    from undisclosed

    About Me Experienced

    Ask me a question

    Verified Buyer

    Pros

    • Clear Sound
    • Easy To Use
    • Powerful
    • Professional Functions
    • Versatile

    Cons

    • None I Could Find

    Best Uses

    • Events
    • Home Studio
    • Performances

    Comments about dbx 231s Dual Channel 31-Band Graphic Equalizer:

    This EQ made a significant improvement to my system. Highly recommended !

    Comment on this reviewHelp Icon

     
    4.0

    It works

    Profile Image

    By Jordan Grunow

    from Very Northern Wisconsin

    About Me Professional Musician

    Ask me a question

    Verified Buyer

    Pros

    • Clear Sound
    • Easy To Use
    • Value For The Money

    Cons

      Best Uses

      • Events
      • Performances
      • Professional Recording

      Comments about dbx 231s Dual Channel 31-Band Graphic Equalizer:

      I use it to EQ blues harp and acoustic lap steels through guitar amps. Works fine in that application.

      Comment on this reviewHelp Icon

      (20 of 20 customers found this review helpful)

       
      1.0

      dbx needs to recall these

      By gtr

      from va

      Verified Buyer

      Comments about dbx 231s Dual Channel 31-Band Graphic Equalizer:

      Got two of these and both had the same problem. Bring the sliders down from 250-20k and there is a loud hiss. The +-12db cut made no difference. Low cut made no difference on the first. Read other reviews with the same problem in the 231's. Not acceptable for dbx. The 231's need to be recalled.

      Comment on this reviewHelp Icon

      (1 of 1 customers found this review helpful)

       
      4.0

      dbx 231 equalizer

      By Emory Covan

      from Pensacola, FL

      Comments about dbx 231s Dual Channel 31-Band Graphic Equalizer:

      Have used this equalizer for 3 weeks now and it has made a tremendous difference. Can easily control the subtle sounds from low to high without the annoying feedback. For the price you can't go wrong.
      Have used this equalizer for 3 weeks now and it has made a tremendous difference. Can easily control the subtle sounds from low to high without the annoying feedback. For the price, you can't go wrong.

      Comment on this reviewHelp Icon

      Displaying reviews 1-5

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