Product code


Stereo Digital True Response Graphic Equalizer
Discontinued product
Using a stereo DSP, the DEQ-231 provides a digital stereo 31 bands true response graphic equalizer. Audio is converted using 24-bit Sigma-Delta conversion with 48 kHz sampling rate.
Input Gain, Output Gain±16 dB, 0,5 dB Step
Frequency range20 Hz - 20 kHz, ±1 dB
Dynamic range>105 dB
Big LCD Display2 x 16 characters
100 user-defined store places, Remote Control by MIDI/PC, Left/Right Channel Copy-Function, Left/Right Channel Flat-Function, Lock-Mode
Analog Inputs
ConnectorsXLR and 1/4" jack
TypeRF filtered,
servo balanced,
20 kilo-Ohm unbalanced
Impedance40 kilo-Ohm balanced,
20 kilo-Ohm unbalanced
Nominal Operating Level-20 dB to +4 dB
Max. Input Level+16 dB at +4 dB
nominal level,
+2 dB at -20 dB
nominal level
Analog Outputs
ConnectorsXLR and 1/4" jack
TypeElectronically servo-
balanced output stage
Impedance66 Ohm balanced,
33 Ohm unbalanced
Max. Output Level+16 dB at +4 dB
nominal level,
+2 dB at -20 dB
nominal level
System specifications
Bandwidth20 Hz to 20 kHz
S/N98 dB, weighted, 20 Hz to 20 kHz
THD0.065% typ. at +4 dB,
1 kHz, Gain 1
Crosstalk-95 dB, 20 Hz to 20 kHz
MIDI Interface
Type5-pin DIN-socket IN/OUT/THRU
Digital Processing
Converters24-bit Sigma-Delta,
64/128-times Over-sampling
Sampling Rate48 kHz
Power Supply
Mains Voltages115VAC, 50-60 Hz;
230VAC, 50-60 Hz
Fuse115VAC: 250 mA;
230VAC: 125 mA
Power Consumption10W
Mains ConnectionStandard IEC
Dimensions483 x 170 x 45 mm
Weight2,06 kg
Product codeD2050

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