dbx iEQ31 - Dual-Channel 31-Band Graphic EQ/Limiter with Type V NR and Advanced Feedback Suppression in Black Finish

The dbx iEQ31 is a highly advanced dual-channel 31-band graphic equalizer and limiter designed to deliver superior audio control, precision, and protection. Built with the renowned dbx legacy of sonic integrity, this device features a wide range of powerful tools that make it indispensable for professionals in live sound, studio, or installation environments. With its sleek black finish, the iEQ31 offers two 31-band channels of 1/3-octave constant Q equalization, allowing for precise control over audio frequencies. The device is equipped with essential built-in technologies such as Advanced Feedback Suppression (AFS), dbx's proprietary Type V noise reduction, and PeakStopPlus limiting, ensuring that your audio remains clear, distortion-free, and protected from unwanted peaks.

The iEQ31 excels in offering advanced audio control through its switchable boost/cut ranges of +6 or +15dB, providing users with the flexibility to fine-tune their sound. The device also features a +12 dB input gain range, nonconductive nylon sliders for smooth adjustments, and XLR, 1/4'' TRS, and Euroblock inputs and outputs to accommodate various professional audio setups. Its intuitive user interface includes comprehensive output and gain reduction metering, making it easy to monitor and control levels in real time. Additionally, the iEQ31 features a 40Hz low-cut filter with 18 dB per octave roll-off to remove low-end rumble, as well as relay bypass for power failure system protection, ensuring continuous operation even in challenging conditions.

What truly sets the dbx iEQ31 apart is its ability to combine digital EQ performance with an analog feel, offering unmatched specifications such as a 10Hz to 22kHz frequency response and a dynamic range greater than 113dB. The AFS feedback suppression system helps eliminate problematic feedback, making it ideal for live sound applications, while the Type V noise reduction delivers up to 10dB of dynamic broadband noise reduction, resulting in cleaner, clearer sound. PeakStopPlus limiting further ensures that your system is protected from extreme signal peaks, preventing distortion and potential speaker damage. The device operates with 24-bit digital resolution at a sample frequency of 48kHz, maintaining high audio fidelity with low latency of only 2 milliseconds.

With its robust construction, high-quality components, and user-friendly interface, the dbx iEQ31 is built to withstand the demands of professional use. Its 40mm faders, comprehensive metering, and advanced audio tools make it an indispensable device for audio engineers seeking precision and reliability in their equalization and signal processing tasks. The unit's compact dimensions of 19 x 7.9 x 5.25 inches and lightweight design of 9.25 lbs make it easy to integrate into any rack setup, while its low power consumption of just 17 watts ensures efficient operation. Whether used in the studio, on tour, or in permanent installations, the iEQ31 delivers exceptional sound control with the trusted dbx name behind it.

Features

• Dual-channel 31-band graphic equalizer with 1/3-octave constant Q frequency bands for precise control.
• Advanced Feedback Suppression (AFS) technology for eliminating feedback in live sound settings.
• Type V noise reduction providing up to 10dB of dynamic broadband noise reduction for cleaner sound.
• PeakStopPlus limiting protects against unwanted signal peaks, preventing distortion and speaker damage.
• Switchable boost/cut ranges of +6 or +15dB for flexible equalization options.
• +12 dB input gain range, allowing for versatile signal control in various setups.
• 40Hz low-cut filter with 18 dB/octave roll-off to eliminate unwanted low-frequency noise.
• XLR, 1/4'' TRS, and Euroblock inputs and outputs for compatibility with a wide range of audio equipment.
• Comprehensive output and gain reduction metering with LED indicators for easy monitoring.
• Nonconductive nylon sliders for smooth and reliable adjustments.
• Dynamic range greater than 113dB and frequency response from 10Hz to 22kHz for superior audio quality.
• Relay bypass for power failure system protection, ensuring continuous operation.
• 24-bit digital resolution with 48kHz sampling frequency for high-fidelity sound and low latency of 2ms.
• Compact dimensions of 19 x 7.9 x 5.25 inches and lightweight design of 9.25 lbs for easy rack integration.
• Power consumption of 17 watts with operating voltage options of 120VAC 60Hz or 220-240VAC 50/60Hz.

Specifications

Inputs

• Connectors: 1/4-inch TRS, female XLR (pin 2 hot), and Euroblock
• Type: Electronically balanced/unbalanced, RF filtered
• Impedance: Balanced 40kΩ, unbalanced 20kΩ
• Max Input Level: +22dBu balanced or unbalanced
• CMRR: >40dB, typically >55dB at 1kHz

Outputs

• Connectors: 1/4-inch TRS, male XLR (pin 2 hot), and Euroblock
• Type: Balanced/unbalanced, RF filtered
• Impedance: Balanced 120Ω, unbalanced 60Ω
• Max Output Level: +20dBu balanced/unbalanced into 2kΩor greater

System Performance

• Frequency Response: 20Hz to 20kHz, +0.5/-0.25dB
• Dynamic Range: >113dB, "A" weighted
• THD+Noise: 0.003% typical at +4dBu, 1kHz
• Interchannel Crosstalk: <-80dB, 20Hz to 20kHz
• Noise Reduction: Up to 10dB of dynamic broadband noise reduction
• Digital Resolution: 24 bits
• Sample Frequency: 48kHz
• Latency: 2msec

Function Switches

• AFS: Activates dbx AFS Advanced Feedback Suppression
• TYPE V NR: Activates dbx Type V Noise Reduction
• EQ Bypass: Bypasses the graphic equalizer section in the signal path
• Low Cut: Activates the 40Hz 18dB/octave Bessel high-pass filter Range
• Range: Selects either +/- 6dB or +/- 15dB slider boost/cut range

Indicators

• Output Level: 4-LED bar graph (Green, Green, Yellow, Red) at -10, 0, +10, and +18dBu
• Gain Reduction: 4-LED bar graph (all Red) at 0, 3, 6, and 10dB
• Type V NR: 1 LED: yellow, green or red
• EQ Bypass: 1 LED: red
• Clip: 1 LED: red
• Low Cut: 1 LED: red
• +/-15dB: 1 LED: red

Power Supply

• Operating Voltage: 120VAC 60Hz, 220-240VAC 50/60Hz
• Power Consumption: 17 Watts
• Mains Connection: IEC receptacle

Physical

• Dimensions: 19 x 7.9 x 5.25 inches
• Weight: 9.25 lbs
• Shipping Weight: 10.25 lbs