dbx 131s Single 31-Band Graphic Equalizer
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- SKU
- DBX131SV
Description
Overview
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.
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 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 |
More Information
| Condition | New |
|---|---|
| Country of Manufacture | China |
Reviews
At a Glance
The dbx 131s brings surgical 31-band equalization into the studio and tracking booth, letting you sculpt and correct frequencies with precision across its extended 10 Hz to 50 kHz range and impressive >112 dB dynamic range. Its switchable gain ranges (±6 or ±12 dB per band), low noise floor, and intuitive slider interface make it ideal for post-production, mixing, and mastering work where you need to isolate and tame problem frequencies without coloring the rest of your mix. Affordable enough to justify owning one, but engineered to the professional standard that's made dbx the industry choice in studios worldwide.
Who This Is For
Great for
- ✓ Live Performance
- ✓ Studio Sessions
- ✓ Sound Reinforcement
- ✓ Touring
Skill level: Intermediate · Advanced · Professional
Frequently Asked Questions
What does 31-band 1/3-octave equalization mean?
The 131s has 31 frequency bands spaced at 1/3-octave intervals, giving you surgical control over the entire audio spectrum from 20 Hz to 20 kHz. This density of bands lets you identify and correct narrow problem frequencies without affecting the overall tone.
Can I switch between different boost and cut ranges?
Yes. The front panel has a switch that toggles between ±6 dB and ±12 dB boost/cut ranges, so you can work with finer resolution for subtle EQ moves or deeper cuts and boosts when you need more aggressive shaping.
What inputs and outputs does it have?
The 131s includes both XLR and 1/4" TRS inputs and outputs (XLR pin 2 hot, standard pro audio configuration), so it integrates seamlessly into live rigs, studio patch bays, and installed sound systems.
Is there a bypass switch?
Yes, the front panel has a bypass switch so you can instantly compare your EQ'd signal to the unprocessed audio without patching the unit out of the chain.
How does the 131s compare to Behringer FBQ models?
The dbx 131s is a single-channel, fixed-frequency 31-band EQ with a 40-year professional heritage, >112 dB dynamic range, and >95 dB S/N ratio. Behringer FBQ models offer multi-channel options (2 or 31 channels) and some include automatic feedback detection, so the choice depends on whether you need single-channel precision or multi-channel flexibility.
Do I pay sales tax on this order?
We collect sales tax only on orders shipped to California. Orders shipped to any other US state are charged $0 sales tax at checkout when you buy direct from our website. On this item that is roughly $19 less out the door than the same listed price at a national retailer or on a marketplace. Marketplaces such as eBay, Reverb and Amazon collect sales tax in nearly every state as marketplace facilitators no matter who the seller is, so the same item at the same price costs less bought direct. Free US shipping and 30-day returns are included. Some states ask buyers to self-report use tax on out-of-state purchases.
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