DBX 131s
Single 31-Band Channel 1/3 Octave Graphic Equalizer

OUR PART #  131S

Log In for price!

Don't have an account? Apply today!

The dbx 131s includes a single 31-band channel of 1/3-octave equalization, +/- 12 dB input gain, switchable +/- 6 dB or +/- 12 dB boost/cut range, 20mm nonconductive sliders, an intuitive user interface, and output level metering. From its extended 10 Hz to 50 kHz frequency response and 110 dB dynamic range to the quality componentry and meticulous attention to detail, the 131s offers exceptional sound and rugged reliability.

Sure to find a home in the studio, on tour and with installed sound venues, the dbx 131s 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.

dbx 131s Features:

  • 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
  • Frequency Repsonse of < 10 Hz to > 50 kHz
  • Dynamic range of greater than 108dB

dbx 131s Specifications:

  • Input Connectors: 1/4" TRS, female XLR (pin 2hot)
  • Input Type: Electronically balanced/unbalanced, RF filtered
  • Input Impedance: Balanced 40 kOhms, unbalanced 20 kOhm
  • Max Input: > +21dBu balanced or unbalanced
  • CMRR: > 40dB, typically > 55dB at 1 kHz
  • Output Connectors: 1/4" TRS, male XLR (pin 2 hot)
  • Output Type: Impedance-balanced/unbalanced, RF filtered
  • Output Impedance: Balanced 100 Ohms, unbalanced 50 Ohms
  • Max Output: > +21dBu balanced/unbalanced into 2k ohm or greater; >+18dBm balanced/unbalanced (into 600 ohm)
  • Bandwidth: 20 Hz to 20 kHz, +0.5/-1dB
  • Frequency Response: < 10 Hz to > 50 kHz,+0.5/-3dB
  • Dynamic Range: Typically > 112dB
  • Signal to Noise Ratio: Typically > 95dB
  • THD+Noise: < 0.003%
  • Interchannel Crosstalk: < -90dB, 20 Hz to 20kHz
  • Bypass Switch: Bypasses the graphic equalizer section in the signal path
  • Low Cut Switch: Activates the 50Hz 12dB/octave high-pass filter
  • Range Switch: Selects either +/- 6dB or +/-12dB slider boost/cut range
  • Operating Voltage: 100-240VAC 50/60Hz
  • Power Consumption: 15W
  • Power Connector: IEC receptacle
  • Unit Weight: 4.8 lbs.(2.2 kg)
  • Shipping Weight: 6.2 lbs.(2.8kg)
  • Dimensions (HxDxW): 1.75"  x 6" x 19" (4.4cm x 15.24cm x48.26cm)

DBX 131s
Single 31-Band Channel 1/3 Octave Graphic Equalizer

OUR PART #  131S

Product Information:

The dbx 131s includes a single 31-band channel of 1/3-octave equalization, +/- 12 dB input gain, switchable +/- 6 dB or +/- 12 dB boost/cut range, 20mm nonconductive sliders, an intuitive user interface, and output level metering. From its extended 10 Hz to 50 kHz frequency response and 110 dB dynamic range to the quality componentry and meticulous attention to detail, the 131s offers exceptional sound and rugged reliability.

Sure to find a home in the studio, on tour and with installed sound venues, the dbx 131s 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.

dbx 131s Features:

  • 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
  • Frequency Repsonse of < 10 Hz to > 50 kHz
  • Dynamic range of greater than 108dB

dbx 131s Specifications:

  • Input Connectors: 1/4" TRS, female XLR (pin 2hot)
  • Input Type: Electronically balanced/unbalanced, RF filtered
  • Input Impedance: Balanced 40 kOhms, unbalanced 20 kOhm
  • Max Input: > +21dBu balanced or unbalanced
  • CMRR: > 40dB, typically > 55dB at 1 kHz
  • Output Connectors: 1/4" TRS, male XLR (pin 2 hot)
  • Output Type: Impedance-balanced/unbalanced, RF filtered
  • Output Impedance: Balanced 100 Ohms, unbalanced 50 Ohms
  • Max Output: > +21dBu balanced/unbalanced into 2k ohm or greater; >+18dBm balanced/unbalanced (into 600 ohm)
  • Bandwidth: 20 Hz to 20 kHz, +0.5/-1dB
  • Frequency Response: < 10 Hz to > 50 kHz,+0.5/-3dB
  • Dynamic Range: Typically > 112dB
  • Signal to Noise Ratio: Typically > 95dB
  • THD+Noise: < 0.003%
  • Interchannel Crosstalk: < -90dB, 20 Hz to 20kHz
  • Bypass Switch: Bypasses the graphic equalizer section in the signal path
  • Low Cut Switch: Activates the 50Hz 12dB/octave high-pass filter
  • Range Switch: Selects either +/- 6dB or +/-12dB slider boost/cut range
  • Operating Voltage: 100-240VAC 50/60Hz
  • Power Consumption: 15W
  • Power Connector: IEC receptacle
  • Unit Weight: 4.8 lbs.(2.2 kg)
  • Shipping Weight: 6.2 lbs.(2.8kg)
  • Dimensions (HxDxW): 1.75"  x 6" x 19" (4.4cm x 15.24cm x48.26cm)
Add to Cart

We're sorry, only of this item available



Call a Sales Pro at for more information

Serving Contractors, Dealers, and Installers Since 1977

Contact: 1-800-828-0509 / Hours: Mon - Fri 7:00AM - 7:00PM