131s

The dbx 131s is a professional single-channel 31-band graphic equalizer designed for live sound, installed audio, recording, and broadcast applications. Featuring industry-standard 1/3-octave equalization, switchable boost/cut ranges, and low-noise circuitry, it provides precise tonal control and effective feedback management for demanding audio environments. From The Manufacturer The dbx 131s delivers the legendary performance of the dbx 12 Series in a compact, rugged design. Equipped with 31 constant-Q filters, balanced XLR and TRS connectivity, switchable ±6 dB or ±12 dB boost/cut ranges, and a bypass switch, it provides accurate frequency control while preserving signal integrity. Key Features Single-channel 31-band graphic equalizer 1/3-octave constant-Q filters Switchable ±6 dB or ±12 dB boost/cut range 20 mm non-conductive sliders Front-panel bypass switch XLR and ¼-inch TRS balanced inputs and outputs Frequency response from 10 Hz to 50 kHz Low-noise, high-headroom design Rugged steel chassis 1U rack-mount format Specifications Product Type: Graphic Equalizer Channels: 1 Equalizer Bands: 31 (1/3 Octave) Filter Type: Constant-Q Boost/Cut Range: ±6 dB or ±12 dB Frequency Response: 10 Hz – 50 kHz Dynamic Range: >112 dB THD+Noise: <0.003% Inputs: Balanced XLR, ¼-inch TRS Outputs: Balanced XLR, ¼-inch TRS Rack Size: 1U Power Supply: Internal Universal (100–240 VAC, 50/60 Hz) Included dbx 131s Graphic Equalizer IEC Power Cable User Documentation Applications Live sound reinforcement Houses of worship Recording studios Broadcast facilities Corporate AV Fixed installations Feedback suppression System tuning Included Accessories IEC power cable User documentation Accessories (Not Included) Audio cables Rack screws Flight case Power conditioner Size 482.6 × 44.5 × 146 mm (19 × 1.75 × 5.75 in) Weight 2.3 kg (5.1 lb) Electrical/Thermal Power Supply: 100–240 VAC, 50/60 Hz Internal universal power supply Low-noise analogue signal path Designed for continuous professional operation