Simple, straightforward, and state-of-the-art.

The dbx 131 Graphic Equalizer has a visionary design that will make your job easier. Features include single 31-band, 1/3-octave channel; ISO frequency centers; ±12dB input gain range; switchable 50Hz/12dB per octave low-cut filter; 20mm faders; selectable 6dB or 12dB boost/cut range; XLR and TRS connectors; and balanced inputs and outputs for quiet operation.

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dbx 131 Single 31-Band Graphic EQ Features:

Single 31-band, 1/3-octave constant Q-frequency channel
Switchable boost/cut ranges of 6dB or 12dB
12dB per octave 3dB down @ 50Hz low-cut filter
Front-panel bypass switch
±12dB input gain range
4-segment LED ladders for monitoring output levels
XLR and TRS inputs and outputs
Internal toroidal transformer
Frequency response of 10Hz-50kHz
Dynamic range of greater than 108dB
Signal-to-noise: 90dB