dbx 231s Graphic EQs
Description
dbx 231s Graphic EQ
The dbx 231s is a dual-channel 31-band graphic equalizer built into a compact 2-space rack chassis. Its 20mm nonconductive sliders offer precise tactile control for tracking and mixing sessions, and the front panel bypass lets you engage or disengage EQ processing instantly without patching. This is a workhorse EQ for studio recording, mixing, and mastering where serious tone-shaping meets reliability and transparency.
Studio Equalization & Frequency Control
Each channel delivers 1/3-octave equalization across a 10Hz to 50kHz frequency response, giving you surgical control over the entire audible spectrum and beyond. The 112 dB dynamic range ensures minimal noise floor for clean recording chains, while switchable ±6 dB or ±12 dB boost/cut range adapts to both surgical mix corrections and aggressive tonal reshaping. A 12dB per octave, 3dB down at 50Hz low-cut filter removes rumble and sub-bass contamination from individual tracks or bus processing.
Connectivity & Headroom Management
Balanced XLR and TRS inputs and outputs on both channels integrate seamlessly into recording chains and mixing consoles with minimal impedance interaction. The ±12 dB input gain and output level metering provide headroom management and visual feedback for proper gain staging, while the dual-space rack mount chassis and 6.2 lb weight fit efficiently into any standard 19-inch rack setup.
Key Features
- Dual 31-band 1/3-octave equalization channels
- 10Hz to 50kHz frequency response
- 112 dB dynamic range
- Switchable ±6 dB or ±12 dB boost/cut range
- ±12 dB input gain control
- 12dB per octave, 3dB down at 50Hz low-cut filter
- 20mm nonconductive fader sliders
- Balanced XLR and TRS inputs and outputs
- Front panel bypass control
- Output level metering
- Dual space, 19-inch rack mount chassis
- Weight: 6.2 lbs
The 231s combines straightforward dual-channel EQ with the precision and durability expected from dbx's pro audio lineup, making it an essential tool for home studios, professional tracking rooms, and mixing environments demanding transparent, artifact-free equalization across individual tracks and submixes.
More Information
| Condition | New |
|---|
Reviews
At a Glance
The dbx 231s is a professional dual-channel 31-band graphic EQ that brings surgical precision and minimal noise to any recording or mixing session, whether you're tracking, mixing, or mastering in your studio. Each channel spans 10Hz to 50kHz with 1/3-octave resolution, letting you shape tone transparently across the entire audible spectrum without coloration or artifacts. The balanced XLR and TRS connectivity, switchable boost/cut ranges, and front-panel bypass make it easy to insert into your signal chain for corrective EQ or creative tone-shaping work.
Who This Is For
Great for
- ✓ Live Performance
- ✓ Studio Sessions
- ✓ Fixed installations
- ✓ Venue sound systems
Not the best pick for
- – Practice
- – Home Recording on a budget
Skill level: Intermediate · Advanced · Professional
Frequently Asked Questions
What does dual-channel 31-band mean, and how precise can I get with EQ?
The dbx 231s provides two independent channels, each with 31 faders tuned to 1/3-octave intervals across the entire audible spectrum (10Hz to 50kHz). That granularity lets you target and adjust specific problem frequencies or resonances with surgical accuracy, rather than broad strokes.
Can I use this for both live sound and studio work?
Yes. The 231s is built for live performance, studio sessions, fixed installations, and mastering work. Its low noise floor (112 dB dynamic range), transparent sound, and versatile connectivity make it equally at home in a live PA rack or patched into a mixing console in the studio.
What's the difference between the ±6 dB and ±12 dB boost/cut range, and when would I use each?
The switchable range lets you choose between ±6 dB for subtle, transparent corrections and ±12 dB for more aggressive tone-shaping. Use ±6 dB for mastering and precision mixing; switch to ±12 dB for heavier feedback control or creative sound design in live or studio contexts.
Does it work with XLR and TRS, or just one?
The dbx 231s has balanced XLR and TRS inputs and outputs on both channels, so you can patch it into nearly any professional audio setup without adapters or impedance issues.
Will this fit in a standard equipment rack?
Yes. The 231s is a dual-space (2U) 19-inch rack mount chassis weighing 6.2 lbs, designed to slide into any standard pro audio rack alongside your other gear.