iEQ31 Dual 31-Band Graphic EQ/Limiter with Type V NR and AFS


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With an EQ heritage that has produced countless industry-standard patents and dates back more than 30 years, the dbx iEQ31 easily lives up to the dbx legacy of uncompromised sonic integrity. In addition to unsurpassed equalization specs, the iEQ31 also offers the built-in necessities which include AFS feedback Suppression, Type V noise reduction and PeakStopPlus limiting. Besides including two 31-band channels of 1/3-octave equalization, the iEQ31 also offers +12 dB input gain range; switchable +6 or +15 dB boost/cut range, 40 mm faders, XLR, 1/4'' and Euroblock inputs and outputs, nonconductive nylon sliders; and an intuitive user interface with comprehensive output and gain reduction metering. As always, the inevitable result of our meticulous attention to detail and top-quality componentry is exceptional sound, performance, and reliability.

The iEQ series represents a major step forward in the performance of graphic equalizers. The iEQ series is now able to offer state-of-the-art digital EQ performance and specs with an analog look and feel. From its amazing 10 Hz to 22 kHz frequency response, to its 113 dB dynamic range and Advanced Feedback Suppression (AFS), dbx proprietary Type V noise reduction and PeakStopPlus limiting, the iEQ31 offers out of this world specifications with a down-to-earth price point. Sure to find a home in the studio, on tour and with installed sound venues, the iEQ31 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 pristine design and quality, the iEQ31 offers the maximum sonic flexibility in a straight forward interface and rock-solid construction.

• Advanced Feedback Suppression (AFS)
• Type V Noise Reduction
• PeakStopPlus Limiting
• 1/3-octave Constant Q frequency bands
• Switchable boost/cut ranges of +6 or +15 dB
• 18 dB per octave 40 Hz low-cut filter
• +12 dB input gain range
• XLR, TRS and Euroblock Inputs and Outputs
• Internal Toroidal Transformer
• Dynamic range of greater than 113 dB
• User Power Up Features
• Relay Bypass for Power Failure System Protection


Input Connectors 1/4" TRS, female XLR (pin 2 hot), and Euroblock
Input Type Electronically balanced/unbalanced, RF filtered
Insert Impedance Balanced 40k ohm, unbalanced 20k ohm
Max. Input >+22 dBu balanced or unbalanced
CMRR >40 dB, typically >55 dB at 1 kHz
Output Connectors 1/4" TRS, male XLR (pin 2 hot), and Euroblock
Output Type Active-balanced/unbalanced, RF filtered
Output Impedance Balanced >120 ohm, unbalanced >60 ohm
Max. Output >+20 dBu balanced/unbalanced into 2k ohm or greater
Frequency Response 20 Hz to 20 kHz, +0.5/0.25 dB
Dynamic Range >113 dB, "A" weighted
THD+Noise <0.003%, typical at +4 dBu, 1 kHz
Interchannel Crosstalk <-80 dB, 20 Hz to 20 kHz
Noise Reduction Up to 10 dB of dynamic broadband noise reduction
Digital Resolution 24 bits
Sample Rate 48 kHz
Latency 2 msec
Operating Voltage 120 VAC 60 Hz, 220/240 VAC 50/60 Hz
Power Consumption 17 Watts
Power Connector IEC receptacle
Dimensions 3.5" H x 19" W x 7.9" D
More Information
Weight 0.000000
Length 19
Width 7.9
Height 3.5
Color Black
Manufacturer dbx by HARMAN
Manufacturer Model Number IEq31-M
Manufacturer Part Number DBXIEQ31-M
UPC 691991400612
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