Equalizer dbx 231s

The dbx 231s is a professional dual-channel graphic equalizer with 31 bands per channel (1/3 octave), designed for the most demanding studio, touring, and installation environments. Backed by dbx’s decades of experience in audio signal processing, the 231s delivers outstanding sound quality with simple and intuitive operation.

Each channel features a selectable boost/cut range (±6 dB or ±12 dB), 20mm smooth sliders, ±12 dB input gain control, and 4-segment LED output level meters. Premium components provide an extended frequency response (10 Hz – 50 kHz), a dynamic range exceeding 112 dB, and ultra-low total harmonic distortion (<0.003%), ensuring professional-grade performance in any setting.

The unit offers balanced and unbalanced XLR and 1/4" TRS inputs and outputs, all protected against RF interference. A front-panel bypass switch and 50 Hz low-cut filter (12 dB/octave) allow quick sound adjustments to different acoustic environments. With a rugged 2U chassis (3.5” height) and universal power supply (100–240 V), the dbx 231s is the perfect fit for any professional audio application.

Features

• Two channels of 31-band (1/3 octave) graphic equalization
• Selectable boost/cut range: ±6 dB or ±12 dB
• 50 Hz low-cut filter with 12 dB/octave slope
• Front-panel bypass switch
• ±12 dB input gain control
• 20mm sliders for precise control
• 4-segment LED output level meters
• Balanced/unbalanced XLR and 1/4" TRS inputs and outputs
• Wide frequency response: 10 Hz – 50 kHz
• Dynamic range: over 112 dB
• Low total harmonic distortion: <0.003%
• RF interference protection on inputs and outputs
• Universal power supply: 100–240 V, 50/60 Hz
• Durable 2U chassis, weight: 2.81 kg