The HYBRID S-EQ231FBQ is a professional dual-channel 31-band 1/3 octave graphic equaliser designed for precise audio control and real-time feedback management. Featuring adjustable gain ranges (±6 dB or ±12 dB), low and high-cut filters, and an advanced feedback detection system with LED indicators, it ensures clean, balanced sound in any environment. With both balanced and unbalanced inputs and outputs, as well as a dedicated sub output with adjustable crossover, it seamlessly integrates into a wide range of audio systems. The S-EQ231FBQ delivers reliable performance, flexibility, and exceptional sound shaping capabilities.

Key Features

• Dual-Channel Design
  Independent controls per channel including:

   

  • Input gain control (-15 dB to +15 dB)
  • Bypass switch
  • 12 segment LED Real-time input & output monitoring (Switchable)
• 31-Band EQ (Per Channel)
  • 20mm faders covering  20 Hz – 20 kHz
  • Constant Q design for precise, stable adjustments
  • Switchable gain range: ±6 dB or ±12 dB
• Feedback Detection System (FBQ)
  • FBQ activated on the front panel
  • LED indicators on faders show feedback frequencies
  • LEDs turn off once gain is sufficiently reduced
  • Also indicates highest peak frequency in normal mode
• Adjustable Filters
  • Low Cut Filter (High pass filter): 10 Hz – 400 Hz
  • High Cut Filter (Low pass filter) : 2.5 kHz – 30 kHz
  • Sub Output Crossover: 30 Hz – 200 Hz (adjustable)
• I/O & Connectivity
  • Inputs: Balanced XLR & 1/4″ TRS Jack (parallel)
  • Outputs: Balanced XLR & 1/4″ TRS Jack (parallel)
  • Sub Out: XLR
• Bypass Function
  • One-touch EQ bypass on front panel

 Technical Specifications

• Input Impedance: 40 kΩ (balanced/unbalanced)
• Input Level: 0 dB rated, +20 dB max
• Frequency Response: 10 Hz – 30 kHz (±3 dB)
• S/N Ratio: >94 dB @ +4 dB (22 Hz – 22 kHz)
• THD: <0.05%
• Filter Ranges:
  • Input Gain: -15 dB to +15 dB
  • Low Cut: 10 Hz – 400 Hz
  • High Cut: 2.5 kHz – 30 kHz

 Power & Physical

• Power Supply: 220–240 VAC, 50–60 Hz
• Power Consumption: <18W
• Weight: 1.75 kg
• Dimensions: 480 x 96 x 97 mm

HYBRID is a South African brand with over 30 years’ experience in professional audio, stage and lighting. Our brand is aimed specifically at the African market to meet our continent’s demands for features, performance and budget.
HYBRID+ is our flagship brand, offering features and performance comparable to world renowned brands and making HYBRID+ one of the best price-to-performance ratio brands.