dbx 231s Dual-channel 31-band Equalizer

dbx 231s Dual-channel 31-band Equalizer

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SKU: DBX231S Category:

dbx 231s is a dual-channel 31-band graphic equalizer featuring 20mm non-conductive sliders that can be set to either +/-6dB or +/-12dB of boost or cut. A global control gives you +/-12 dB of input gain. A 12dB per octave, 3dB down at 50Hz low-cut filter can also be switched in if required. The 231s provides exceptional sound and rugged reliability that guarantees you will always sound your best, from its extended 10Hz to 50kHz frequency response and 112 dB dynamic range to the quality componentry and meticulous attention to detail.


Dual 31-band, 1/3-octave Constant Q frequency bands

Switchable boost/cut ranges of ±6 or ±12 dB

Front panel bypass switch

±12 dB input gain range

4-segment LED ladders for monitoring output levels

XLR and TRS Inpts and Outputs

Frequency Repsonse of 50kHz

Dynamic range of greater than 108dB


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: 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

Dimensions (WxHxD): 19 x 6 x 3.5″ (483 x 152 x 89mm)

Unit Weight: 6.2 lbs.(2.81 kg)

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