DBX 131s Single 31 Band Graphic Equalizer

Get Exceptional Sound And Rugged Reliability With The DBX 131s Single 31 Band Graphic Equalizer

When the pros need an EQ, they turn to dbx. With a proven track record that spans four decades, dbx EQs are the industry standard for touring, studios, and audio installations. With the dbx heritage of revered pro EQs, the 131s meets the needs of the most demanding sound reinforcement environments, while offering the simplicity of straightforward controls.

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 10Hz to 50kHz frequency response and 110 dB dynamic range to the quality componentry and meticulous attention to detail, the 131s offers exceptional sound and rugged reliability that guarantees you will always sound your best.

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.

• Single 31-band, 1/3-octave Constant Q frequency bands
• Switchable boost/cut ranges of +/-06 or +/-12dB
• 12dB per octave, 3dB down at 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 Response of 10Hz to 50kHz
• Dynamic range of greater than 108dB

SPECIFICATIONS

• Input Connectors: 1/4" TRS, female XLR (pin 2 hot)
• Input Type: Electronically balanced/unbalanced, RF filtered
• Input Impedance: Balanced 40k ohm, unbalanced 20k ohm
• Max Input: +21dBu balanced or unbalanced
• CMRR: 40dB, typically 55dB at 1kHz
• Output Connectors: 1/4" TRS, male XLR (pin 2 hot)
• Output Type: Impedance-balanced/unbalanced, RF filtered
• Output Impedance: Balanced 100 ohm, unbalanced 50 ohm
• Max Output: +21dBu balanced/unbalanced into 2k ohm or greater; +18dBm balanced/unbalanced (into 600 ohm)
• Bandwidth: 20Hz to 20kHz, +0.5/-1dB
• Frequency Response: 10Hz to 50kHz, +0.5/-3dB
• Dynamic Range: Typically 112dB
• Signal to Noise Ratio: Typically 95dB
• THD+Noise: 0.003%
• Interchannel Crosstalk: -90dB, 20Hz 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: 1.75" (4.4cm) H x 6"(15.24cm) D x 19" (48.26cm) W

We are Chuck Levin's Washington Music Center

Since 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.

Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.

Chuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.