dbx 231S Dual 31-Band Graphic Equaliser

When the pros need an EQ, they turn to dbx. A proven track record that spans four decades, dbx® EQs are the industry standard for touring, studios, and audio installations. 

The dbx 231s includes two 31-band channels 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. 

Features :

• 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 Response of <10Hz to >50kHz 
• Dynamic range of greater than 108dB

Technical :

• Input Connectors : 1/4" TRS, female XLR (pin 2 hot) 
• 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 
• Weight : 2.81 kg
• Dimensions : 8.9cm H x 15.24cm D x 48.26cm W