Detail 01
31 bands per channel
Third-octave spacing lets you pull down one problem frequency without dragging its neighbors with it.
Product detailSKU #1294516231294
dbx231s Dual-Channel 31-Band Graphic Equalizer
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Independent shopping perspective
The Korena take
Two channels of 31-band graphic EQ for stereo mains or two monitor mixes. The choice when you need fine control of specific frequencies.
Strong match
Who this is for
- Ringing out feedback frequencies on live monitor wedges
- Stereo main tuning in a room with problem resonances
- Two-mix systems where each side needs its own curve
Consider the trade-offs
When to look elsewhere
- Small racks — this takes two spaces, not one
- Anyone who only needs one channel; the 131s costs less
- Set-and-forget installs where broad tone shaping is enough
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
±6dB / ±12dB range switch
±6dB doubles your slider resolution for careful room tuning. Save ±12dB for genuinely difficult rooms.
Detail 03
Interchannel crosstalk <-90dB
The two channels stay independent, so a deep cut on one side does not smear into the other in a stereo setup.
Detail 04
3.5 inch H, 19 inch W
Two rack spaces. Plan for that — the dual 15-band 215s does two channels in one space.
Detail 05
50Hz 12dB/octave low cut
Removes stage and HVAC rumble on a switch, so you keep all 31 sliders for actual tone work.
Detail 06
THD+N <0.003%
Clean enough to leave permanently in the signal path without adding audible grit to the mix.
Final check
Know before you order
- 01Needs two rack spaces and about 6 inches of clearance behind the panel
- 02Heavier than the single-channel and 15-band models at 6.2 pounds
- 03Confirm your rack cabling — connections are XLR and 1/4 inch TRS
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What is the difference between this and the 215s?
Both are dual channel. This has 31 bands per channel for finer frequency control but takes two rack spaces; the 215s has 15 bands in one space.
02Can I use it in stereo?
Yes. Two matched channels with better than -90dB crosstalk between them, so left and right stay separate.
03Will it help with feedback?
Third-octave sliders let you cut close to the offending frequency rather than scooping a wide region, which keeps more of the mix intact.
04Does it need a special power supply?
No. It takes a standard IEC cable and runs on anything from 100 to 240 volts, 50 or 60Hz.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsSize & weight
- Bandwidth
- 20Hz to 20kHz, +0.5/-1dB
24 detailsOther
- Max Input Level
- >+21dBu balanced or unbalanced
- EQ Bypass
- Bypasses the graphic equalizer section in the signal path
- Tier
- new
- Low Cut
- Activates the 50Hz 12dB/octave high-pass filter
- Operating Voltage
- 100VAC-240VAC 50/60Hz
- Frequency Response
- <10Hz to >50kHz, +0.5/-3dB
- Max Output Level
- >+21dBu balanced/unbalanced into 2k ohm or greater
- Category Source
- detail
- Mains Connection
- IEC receptacle
- Interchannel Crosstalk
- <-90dB, 20Hz to 20kHz
- Dimensions
- 3.5" (8.9 cm) H x 6" (15.24 cm) D x 19" (48.26 cm) W
- Korena Special
- false
- Range
- Selects either +/- 6dB or +/- 12dB slider boost/cut range
- Dynamic Range
- Typicall >112dB
- Weight
- 6.2 lb. (2.81 kg) Shipping weight 7.9 lb. (3.58kg)
- THD+Noise
- <0.003%
- Connectors
- 1/4" TRS, male XLR (pin 2 hot)
- Type
- Impedance-balanaced/unbalanced, RF filtered
- Power consumption
- 15W
- CMRR
- >40dB, typically >55dB at 1kHz
- Signal-to-Noise
- Typically >95dB
- Source Id
- site51294516231294
- Prop65
- WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov.
- Impedance
- Balanced 100 ohm, unbalanced 50 ohm
Worth comparing
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