dbx DBX-286S (286S) Microphone Preamp / Channel Strip Processor

dbx Microphone channel strip processor, dbx compression, de-esser, enhancer and +48V phantom power

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What's in the box:

  • dbx 286s - Microphone Preamp/Channel Strip
  • AC Power Cable
  • Two (2) Year Warranty

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All The Features You Need– and Then Some–With This dbx Preamp!

    For studio quality microphone sound, the sonically pristine dbx 286s Microphone Preamp / Channel Strip Processor has all the features you need. The dbx 286s boasts a wide-ranging input gain control, switchable +48V phantom power, four processors that can be used independently or in any combination, and an 80Hz high-pass filter to remove low frequency hum, rumble or wind. The dbx 286s provides the professional features you likely don't have on your mixer. Dedicate one or two dbx 286s channel strips to your most important elements and have that extra control to help them cut through the mix while keeping the volume of the peaks under control. Owning this wonderful tool will expand your capabilities, improve your sound system and delight your visitors.


  • Studio quality mic preamp/channel strip processor
  • Classic dbx OverEasy compression puts great sound within easy reach
  • Frequency tunable de-esser reduces sibilance and high frequency distortion
  • Enhancer increases the detail and definition of the high and low frequencies
  • Program-adaptive expander/gate
  • Insert jack allows you to add an external processor
  • Full compliment of meters and status LEDs
  • +48V Phantom Power
  • Precision detented controls

Specifications for the dbx DBX-286S

{ "Mic Input" : { "Input" : "Floating balanced, Pin 2 Hot", "Impedance" : "-4.2k ohms", "Maximum Level" : "0.25Vrms, Gain = 30dB", "Gain Adjustment Range" : "0dB to +60dB", "Phantom Power" : "+48VDC, applied to XLR pins 2 and 3 through 6.81k ohm resistors", "CMRR" : ">40dB, typically 55dB", "EIN" : "-125dBu, 22Hz-22kHz, 150 ohm source impedance" }, "Line Input" : { "Input" : "Floating balanced, TIP Hot", "Impedance" : "10k ohm unbalanced, 20k ohm balanced", "Maximum Level" : ">+21dBu, balanced or unbalanced", "Gain Adjustment Range" : "-15dB to +45 dB", "CMRR" : ">40dB, typically 55dB" }, "Insert" : { "Connector" : "1/4 inch TRS phone, Normalled; tip is Send, ring is Return", "Ring: Impedance" : ">5k ohms", "Tip: Impedance" : "100 ohms", "Maximum Level" : ">+21dBu, >+20dBm (600 ohm load)", "Noise" : "<-89dBu, unweighted (20Hz-20kHz);", "Line Gain" : "Control set to 0dB", "Distortion" : "<0.01% THD, 20Hz-20kHz, +10dBu" }, "Line Output" : { " 1/4 inch TRS phone" : "Balanced/Unbalanced", "Impedance" : "100 ohm unbalanced, 200 ohm balanced", "Maximum Level" : ">+21dBu, >+20dBm (600 ohm load)", "Gain Adjustment Range" : "-30dB to +10dB", "Noise" : "<-80dBu unweighted (20Hz-20kHz); Both Gain Controls set for 0dB, all processing controls OFF", "Frequency Response" : "20Hz to 20kHz, +0.5/-0.5dB", "Distortion" : "<0.08%THD, 20Hz-20kHz, +10dBu, all Processing Controls OFF" }, "Compressor" : { "Threshold Range" : "-40dBu to +20dBu", "Threshold Characteristics" : "OverEasy", "Compression Ratio" : ">4:1 For input levels beyond 20dB above threshold", "Maximum Compression" : "30dB", "Attack Time" : "Program-Dependent; >1s for small level increases, down to 10ms for larage increases", "Release Time" : "Program-Dependen; adjustable between approximately 1dB/sec and 75dB/sec", "Distortion" : "Typically <0.05%THD, 20Hz-20kHz, 15dB G/R, +10dBu Output, DENSITY at 0", "SMPTE Intermodulation Distortion" : "<0.05%; 60Hz/7kHz 4:1, 15dB G/R, +10dBu Output Level, DENSITY at 0" }, "De-Esser" : { "Characteristic" : "Wideband Gain Reduction", "Frequency Range" : "800Hz to 10kHz High Pass, 12dB/octave", "Release Time" : "Program-Dependent approximately 1ms/dB" }, "Enhancer" : { "HF Detail Characteristic" : "Program-controlled shelving equalizer, approximately 15dB maximum HF boost", "LF Detail Characteristics" : "Bell-shaped boost at 80Hz, bell-shaped cut at 250Hz, ratio is approximately 2:1" }, "Expander/Gate" : { "Threshold Range" : "OFF to +15dBu", "Expansion Ratio" : "Adjustable 1.5:1 to 10:1", "Maximum Depth" : ">50dB", "Attack Time" : "Program-Dependent, approximately 2mS (at maximum attenuation)", "Release Time" : "Program-Dependent, approxiamtely 10mS/dB", "Dynamic Range" : "Typically 105dB" }, "Power" : { "Power Requirements" : "15watts", "Operating Voltage: DO: 120VAC 60Hz, 100VAC 50/60Hz; EU" : "230VAC 50/60Hz" }, "Dimensions and Weight" : { "Dimensions" : "1.75 x 5.75 x 19 inches (4.5x14.6x48.5cm)", "Weight: Net Weight" : "4.5 lbs/2.04 Kgs", "Shipping Weight" : "8 lbs", "Shipping Dimensions" : "22 x 12 x 3 in " } }

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286s (DBX-286S) Brochure

286s (DBX-286S) User Guide

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