DBX 2231 Graphic Equalizer – Dual 31-Band Professional EQ with Limiter

The dbx 2231 Graphic Equalizer is a professional dual-channel 31-band 1/3-octave graphic EQ designed for live sound reinforcement, churches, concerts, DJs, studios, and installed PA systems. It is part of dbx’s renowned 20 Series and is widely respected for its precision sound control, built-in limiter, and advanced noise reduction features.

This unit is built for sound engineers who need accurate system tuning, feedback control, and clean audio shaping in demanding environments.

🎚️ Dual 31-Band Precision Equalization

The dbx 2231 provides:

• Two independent 31-band EQ channels (stereo operation)
• 1/3-octave frequency control from 20Hz to 20kHz
• Switchable boost/cut range: ±6dB or ±15dB
• High-precision sliders for detailed sound shaping

This allows full control of room acoustics and system tuning for professional PA systems.

🔊 Built-In PeakPlus Limiter & Protection

The 2231 includes dbx’s advanced PeakPlus™ limiter, which:

• Protects speakers from overload and distortion
• Smoothly controls dynamic peaks
• Helps maintain consistent output levels
• Includes LED gain reduction monitoring

This is especially useful for live sound systems where volume spikes are common.

🎛️ Type III Noise Reduction System

A unique feature of the dbx 2231 is its Type III Noise Reduction, which:

• Improves signal-to-noise ratio by up to 20dB
• Reduces system hiss and background noise
• Enhances clarity in live and installed systems
• Can be switched on or bypassed as needed

🔌 Professional Connectivity

The unit supports multiple professional connection types:

• Balanced XLR inputs and outputs
• ¼” TRS connections
• Barrier strip connectors for installation systems
• 1U/3U rack-mount professional chassis (depending on version/market)

This makes it flexible for both touring rigs and permanent installations.

🎵 Advanced System Control Features

The dbx 2231 includes:

• High-pass (low cut) filter for removing rumble
• Clip indicators and LED level metering
• EQ bypass switches for comparison
• Input gain control for system matching
• Stable analog signal path with high headroom

🧱 Rugged Professional Build

Designed for heavy-duty use, the 2231 features:

• Metal rack-mount chassis
• Touring-grade durability
• Long-life sliders and switches
• Reliable performance in demanding environments

🎯 Ideal For

• Churches and worship systems
• Live bands and concerts
• DJs and mobile PA systems
• Sound rental companies
• Conference halls and public address systems
• Professional studio and installation tuning

⭐ Key Features

• Dual 31-band stereo graphic equalizer
• Switchable ±6dB / ±15dB range
• PeakPlus limiter for speaker protection
• Type III noise reduction system
• 20Hz–20kHz full-range frequency control
• LED level and gain reduction monitoring
• Balanced XLR/TRS and barrier strip connections
• Rack-mount professional design

⭐ Why Choose the DBX 2231?

The dbx 2231 is highly respected in professional audio for its clean sound, powerful system control tools, and reliable limiter protection. It is especially valued in live sound environments where precise EQ control and speaker safety are essential.