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Description
Features
Specs
Reviews
Q&A

Description

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, ±12dB input gain, switchable ±6dB or ±12dB boost/cut range, 20 mm 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.
Open Box dbx 231s Dual Channel 31-Band Graphic Equalizer Level 1
Open Box dbx 231s Dual Channel 31-Band Graphic Equalizer Level 1
Open Box dbx 231s Dual Channel 31-Band Graphic Equalizer Level 1

Features

  • Dual 31-band, 1/3-octave Constant Q frequency bands
  • Switchable boost/cut ranges of ±6dB or ±12dB
  • Front panel bypass switch
  • ±12dB input gain range
  • 4-segment LED ladders for monitoring output levels
  • XLR and TRS Inputs and Outputs
  • Frequency Response of <10Hz to >50kHz
  • Dynamic range of greater than 108dB

Specs

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 lb. (2.81 kg) Shipping weight 7.9 lb. (3.58kg)
  • Dimensions: 3.5" (8.9 cm) H x 6" (15.24 cm) D x 19" (48.26 cm) W

Reviews

5

7 Reviews

100%

of respondents would recommend this to a friend

Filters
Best Uses
  1. Home Studio2
  2. Performances2
  3. Outdoor Events / Games1
Describe Yourself
  1. Experienced2
  2. Professional Musician1
Pros
  1. Good Audio4
  2. Easy To Use3
  3. Good Power Output2
  4. Professional Functions1
  5. Versatile1

Reviewed by 7 customers

  • Yes very professional eqlizaer

    5

    Verified Buyer

    submitted4 years ago

    byDarwin

    fromNew York City

    In my house

  • Great product

    5

    submitted6 years ago

    bySlingshot Mafia

    fromCoconut Creek, Fl

    Without this equalizer, your sound will be dead.

  • Great Equalizer

    5

    Verified Buyer

    submitted9 years ago

    byCarl

    fromundisclosed

    Just what the doctor ordered! I used this 231 dbx Dual Channel 31 -Band Graphic Equalizer to take the mud out of our monitors. Man, did those babies come alive. Works great and does exactly as stated. Great product! Will be getting another one for the mains. Don't even think twice. Buy it! It's worth every penny. You won't be sorry.

  • Just awesome

    5

    Verified Buyer

    submitted9 years ago

    byWill

    fromMississippi

    This product is just awesome easy to use and its very good brand for the price just excellent.

  • Works as expected!

    5

    Verified Buyer

    submitted10 years ago

    byChris Stark - Guitarist

    fromHilo, HI

    My home studio sound system is far from ideal, and I know that using an EQ to correct frequency anomalies is not far from a fool's errand, but my studio is what it is, and I have to make the best of it. This EQ was easy to install, sounds crystal clear, and is of course super intuitive. I'm still dialing in the frequencies for the room, but the 31 bands correspond perfectly with any decent spectrum analyzer. I'm just a bit sad that my room is SO bad. :-/

  • Crystal clear sound

    5

    submitted10 years ago

    byLOSANO

    fromOWINGS MILLS, MD

    I use it in conjunction with my Allen &Heath and with my DBX 266xs; and it has impeccably improved the sound in my mix. Now I can distinctly hear each instrument in my mix without problem. It is better to EQ your sound before it hit your DAW, instead of EQ it has reached your DAW. And the DBX 231s will make it happen. My signal flow: Pream > insert (compressor) > mixer> DBX 231s > DAW. The only cons is that, it doesn't have an on and off power button.

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Q&A

Have a question about this product? Our expert Gear Advisers have the answers.

  • submitted6 years ago

    asked byPhil

    fromBeaumont CA

    Does this unit have a limiter? and does it have SFX?

    Open Reply - Beau
    This unit does have a limiter. It does not have SFX.