Used dbx 131S Single Channel 31-Band Graphic Equalizer

Shape your sound with this used dbx 131S single-channel 31-band graphic equalizer in good condition. Built for live and studio rigs, it delivers precise 1/3‑octave control with 31 center-detented sliders for fast, repeatable EQ moves. It’s a classic choice for taming feedback, smoothing vocals, or tightening a full mix. Features include switchable ±6 dB/±12 dB boost/cut range, 20 Hz–20 kHz frequency response, XLR and 1/4" inputs/outputs, and a rugged rackmount design.