What item is right for you?
Ask our Experts! 800.606.6969 Live Chat

ART HQ231 - Dual Channel 31-Band Equalizer with 20mm Faders, Feedback Detection Circuitry, LED Energy Indicators, XLR, 1/4" TRS Balanced and RCA Unbalanced Inputs/Outputs

B&H # ARHQ231 Mfr # HQ-231
Usually ships in 7-14 business days

Availability Details

Close

This is a special order item and is non-cancelable and non-returnable. Est. arrival at B&H is 7-14 business days (subject to availability). Your order will be charged at time of shipment.

International Orders*
For international orders, credit cards will be charged at time you place your order.

Free Standard Shipping
Not eligible for free Expedited Shipping
You Pay: $329.00

The HQ231 from ART is a dual channel, 31 band graphic equalizer that features FDC (Feedback Detection Circuitry.) The unit also features constant Q circuitry, 45mm center detent sliders with selectable boost or cut range of 6dB or 12dB and connectivity includes XLR, 1/4" and unbalanced RCA input and output connections.

The ART proprietary FDC differs from similar systems in that it is extremely fast and utilizes a set of indicators that show which of the many EQ bands has the greatest energy. Although it illuminates the band with the greatest energy with the brightest LED, it doesn't fully discriminate between bands and will not get "stuck" on one band when there is no signal. The function can also act as a simple spectrum viewer.

The rugged, all-steel chassis occupies 2U rack spaces and is intended for installation into standard 19" equipment racks. Applications for the HQ231 include live sound systems/PA, permanent or fixed installations, church, club and practice PA systems, DJ sound systems, home and project recording systems, and monitor systems.

Dual channel, 31-band graphic equalizer
Constant-Q filtering
FDC Feedback Detection Circuit
Individual high and low pass filters on each channel
Center-detented, 20mm frequency band sliders with selectable range
Independent level and bypass controls on each channel
Relay bypass - in the event of power loss to the equalizer, signal will still pass
Signal clip level indicators
Ground lift switch
Internal power supply with selectable line voltage
Filter Type Constant - 3% center accuracy
Number of Channels Two
Inputs 2 x XLR
2 x 1/4" TRS phone
2 x RCA phono
Outputs 2 x XLR
2 x 1/4" TRS phone
2 x RCA phono
Maximum Input Level +22dBm
Frequency Bands 2 x 31
Bandwidth 1/3 octave, ISO spacing
Range (Boost/Cut) +/-6dB o+/-12dB, selectable
Maximum Output Level +22dBm
Frequency Response 20Hz to 20kHz, +/-0.5dB
Dynamic Range Not specified by manufacturer
Noise -94dBm, unweighted
Dimensions (WxDxH) 19" x 7 1/2" x 3 1/2"
Weight 12 lbs
Specialties FDC (Feedback Detection Circuitry) instantly illuminates the EQ band with the greatest signal.
ART HQ231 - Dual Channel 31-Band Equalizer with 20mm Faders, Feedback Detection Circuitry, LED Energy Indicators, XLR, 1/4" TRS Balanced and RCA Unbalanced Inputs/Outputs
  • AC Power Cable
  • Three (3) Year Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    ARTHQ231 Dual Channel 31-Band Equalizer
     
    5.0

    (based on 6 reviews)

    Ratings Distribution

    • 5 Stars

       

      (6)

    • 4 Stars

       

      (0)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    100%

    of respondents would recommend this to a friend.

    Pros

    • Good audio (4)
    • Versatile (3)

    Cons

      Best Uses

          • Reviewer Profile:
          • Experienced (3)

        Reviewed by 6 customers

        Sort by

        Displaying reviews 1-6

        Back to top

         
        5.0

        great eq

        By dogface

        from md

        About Me Novice

        Verified Buyer

        Pros

        • Clear Sound
        • Powerful

        Cons

          Best Uses

            Comments about ART HQ231 Dual Channel 31-Band Equalizer:

            works great and looks cool to.

            Share this review

             
            5.0

            works great

            By dogface

            from pa

            About Me Novice

            Verified Reviewer

            Pros

            • Excellent Sound Quality
            • Good Selection Of Effects
            • Responsive
            • Versatile

            Cons

              Best Uses

                Comments about ART HQ231 Dual Channel 31-Band Equalizer:

                using it on a home stereo. works great and looks cool too.

                Share this review

                 
                5.0

                Very cool EQ. Glad I bought it.

                By Rumbakid

                from Santa Cruz CA

                About Me Experienced

                Verified Buyer

                Pros

                • Compact Design
                • Excellent Sound Quality

                Cons

                  Best Uses

                  • Events
                  • Performances

                  Comments about ART HQ231 Dual Channel 31-Band Equalizer:

                  I use the HQ 231 for live sound. I do shows where musicians are playing acoustic instruments using mics and DIs. Mainly I've used the HQ231 to EQ the monitor mixes. I never have feedback problems because the feedback circuit shows if a frequency is really hot and about to feed back. The HI and LOW shelving EQs also are great for dialing in the right frequency for making the HI & Low cuts.

                  Share this review

                  (2 of 3 customers found this review helpful)

                   
                  5.0

                  Like a Ferrari

                  By The Enforcer

                  from Daytona Beach, FL

                  About Me Audiophile, Musically Inclined, Professional, Tech Savvy

                  Verified Buyer

                  Pros

                  • Accurate Controls
                  • Clean Sound
                  • Easy To Set Up

                  Cons

                    Best Uses

                    • Audiophiles
                    • Larger Rooms
                    • Smaller Rooms

                    Comments about ART HQ231 Dual Channel 31-Band Equalizer:

                    It's like a Ferrari, looks beautiful and performs great! You have great flexibility from the 31 bands. There is also the flexibility of balanced or unbalance audio. Great product!

                    Share this review

                    (2 of 2 customers found this review helpful)

                     
                    5.0

                    Also great for home audio

                    By MarkD

                    from Palm Bay, Fl

                    About Me Experienced

                    Verified Buyer

                    Pros

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

                    Cons

                      Best Uses

                      • Amateur Recording
                      • Events
                      • Mobile DJ
                      • Performances
                      • Professional Recording
                      • Soundtracks

                      Comments about ART HQ231 Dual Channel 31-Band Equalizer:

                      I bought this for my rackmount home stereo system. Having both balanced (XLR,TRS) and unbalanced (RCA) connectors made it easy to connect.

                      The +/-12dB gain controls in 31 bands were more than enough to flatten the room response. The 1/3 octave controls really help in smoothing out any sharp notches/peaks.

                      The FDC is actually quite impressive. It acts as a real-time audio spectrum analyzer in that it instantly shows where (at what frequencies) all the power is going. With no signal, the LEDs are all lit normally. As the signal increases, so does the brightness of the appropriate LEDs, but as the signal gets even greater, the unaffected LEDs then begin to dim. A peak signal results in only a few very bright LEDs. Very effective.

                      My only complaint is that the FDC cannot be turned off. The visual effect can be so mesmerizing that it actually becomes a distraction during social gatherings!

                      Share this review

                      (3 of 6 customers found this review helpful)

                       
                      5.0

                      Feed me!

                      By DietCola

                      from Reseda, CA

                      About Me Experienced

                      Verified Buyer

                      Pros

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

                      Cons

                        Best Uses

                        • HQ stereo equalization

                        Comments about ART HQ231 Dual Channel 31-Band Equalizer:

                        When I first turned this on, I thought it was defective. Then I moved the sliders up from the zero position and it started to come alive and the sound quality improved constantly over and above what I ever expected. It is a good buy and I am extremely happy with it.

                          Share this review

                          Kopul -  Studio Elite 4000 Series XLR M to XLR F Microphone Cable - 6' (1.8 m), Black
                          • You Pay: $17.99
                           

                          Cases & Protection

                          Show more >
                          Gator Cases -  GSR-2U Studio 2 Go Carrying Case
                          • You Pay: $99.99
                           
                          Raxxess -  ER-04 Space Economy Rack (Black Oak)
                          • You Pay: $77.95
                           
                          View all Accessories
                          See any errors on this page? Let us know.

                          Close

                          Close

                          Close