Loyola Enterprises

A veteran and minority owned SDB Certified Business.


DBX 131

757.498.6118 Ext - 109DBX 131 - Call for pricing - Single 31 band EQ


PDFDBX 131 Cut Sheet (pdf)

PDFDBX 2-Series Manual (pdf)

The dbx® 2-Series Graphic Equalizers have been designed to meet the needs of the most demanding sound reinforcement environments, while offering the simplicity of straight forward controls. The 131 not only offers standard features like single-channel, 31, 1/3 octave bands, ISO frequency centers, ±12 dB input gain range, and switchable 50Hz/12 dB per octave low-cut filter, but also includes other insightful features. These features include 20 mm faders; selectable ±6dB or ±12dB boost/cut range for precise gain adjustments; XLR, and ¼" TRS connectors for installation ease; balanced inputs and outputs for quiet operation. The visionary design of the dbx 2-Series makes your job easier.

The 2-Series represents a major step forward in the performance of entry-level graphic equalizers. From its amazing 10 Hz to 50 kHz frequency response, to its 108dB dynamic range, internal torodial transformer, the 2-Series 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 2-Series 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 affordable quality there’s no longer any excuse for compromising your sound.


  • Single 31-band, 1/3-octave Constant Q frequency bands
  • Switchable boost/cut ranges of ±6 or ±12dB
  • 12dB per octave, 3dB down @ 50Hz low-cut filter
  • Front panel bypass switch
  • ±12 dB input gain range
  • 4-segment LED ladders for monitoring output levels
  • XLR and TRS Inputs and Outputs
  • Internal Toroidal Transformer
  • Frequency Response of <10Hz to >50kHz
  • Dynamic range of greater than 108dB

Connectors ¼" TRS, Female XLR (pin 2 hot)
Type Electronically balanced/unbalanced, RF filtered
Impedance (bal./unbal.) 40 kΩ / 20 kΩ
Max. Input Level >+21dBu balanced or unbalanced
CMRR >40 dB, typically >55 dB at 1 kHz
Connector ¼" TRS, Male XLR (pin 2 hot)
Type Impedance-balanced/unbalanced, RF filtered
Impedance (bal./unbal.) 100 Ω / 50 Ω
Max. Output Level >+21dBu balanced/unbalanced into 2kΩ or greater
>+18dBm balanced/unbalanced (into 600Ω)
System Performance
Bandwidth (+0.5/-1dB) 20 Hz–20 kHz
Frequency Response (+0.5/-3dB) <10 Hz >50 kHz
Dynamic Range 108 dB
Signal-to-Noise Ratio 90 dB
THD+Noise <0.004%
Interchannel Crosstalk (20–20k Hz) <-80 dB
Function Switches
EQ Bypass Bypasses the graphic equalizer section in the signal path
Low Cut Activates the 50 Hz 12dB/octave high-pass filter
Range Selects either ±6 dB or ±12 dB slider boost/cut range
Power Requirements 100-230V 50/60 Hz, 12 Watts
Weight 2.1 kg (4.7 lbs)
Dimensions (HxWxD) 4.44 x 48.3 x 15.2 cm (1.75" x 19.0" x 6.0")
For pricing options and packages, contact us at
757.498.6118 Ext - 109, Or