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DBX 286s Mic Pre-Amp Processor (Open Box)

Model: 286s (OB)

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About: DBX 286s Mic Pre-Amp Processor (Open Box)

Microphone Processor Single channel studio quality mic preamp plus
five dynamics processors which offers: internal power supply. +48V
phantom power, and frequency controllable de‐esser, as well as a
premium pre‐amp section and expanded metering 2‐knob compression,
spectral enhancer and an expander/gate make the 286A vital in any

  • Studio quality Mic Preamp/Channel Strip Processor
  • Classic dbx 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


INPUT Floating balanced, Pin 2 Hot

Impedance: ~4.2kΩ

Maximum Level: 0.25Vrms, Gain = 30dB

Gain Adjustment
Range: 0dB to +60dB

Phantom Power: +48VDC, applied to XLR pins 2 and 3 through 6.81kΩ resistors

CMRR: >40dB, typically 55dB

EIN: -125dBu, 22Hz-22kHz, 150Ω source impedance


Input: Floating balanced, TIP Hot

Impedance: 10kΩ unbalanced, 20kΩ balanced

Maximum Level: >+21dBu, balanced or unbalanced

Gain Adjustment
Range: -15dB to +45 dB

CMRR: >40dB, typically 55dB


(1/4" TRS phone) Normalled; tip is Send, ring is Return

Ring: Impedance: >5kΩ

    Maximum Level: >+21dBu

Tip: Impedance: 100Ω

    Maximum Level: >+21dBu, >+20dBm (600Ω load)

Noise: <-89dBu, unweighted (20Hz-20kHz);
LINE GAIN Control set to 0dB

Distortion: <0.01% THD, 20Hz-20kHz, +10dBu


1/4" TRS phone: Balanced/Unbalanced

Impedance: 100Ω unbalanced, 200Ω balanced

Maximum Level: >+21dBu, >+20dBm (600Ω 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


Threshold Range: -40dBu to +20dBu

Characteristics: OverEasy®

Compression Ratio: >4:1 For input levels beyond 20dB above threshold

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 @ 0

SMPTE Intermodulation
Distortion: <0.05%; 60Hz/7kHz 4:1, 15dB G/R, +10dBu Output Level, DENSITY @ 0


Characteristic: Wideband Gain Reduction

Frequency Range: 800Hz to 10kHz High Pass, 12dB/octave

Release Time: Program-Dependent approximately 1ms/dB


HF Detail
Characteristic: Program-controlled shelving equalizer, approximately 15dB maximum HF boost

LF Detail
Characteristics: Bell-shaped boost @ 80Hz, bell-shaped cut @250Hz, ratio is approximately 2:1


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 Requirements: 15watts

Operating Voltage: DO: 120VAC 60Hz, 100VAC 50/60Hz; EU: 230VAC 50/60Hz

Temperature: 0°C to 45°C (32°F to 113°F)


Dimensions: 1.75" x 5.75" x 19" (4.5cm x 14.6cm x 48.5cm)

Weight: Net Weight: 4.5 lbs/2.04 Kgs
Shipping Weight: 6.54 lbs/2.97 Kgs

UPC: 691991401237 is a Canadian authorized dbx retailer.

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Warranty: DBX 286s Mic Pre-Amp Processor (Open Box) Warranty:

30 Days

Manufacturer's Warranty:

Soundcraft, Lexicon, BSS, and dbx products are warranted to be free from defects of material and workmanship for 1 year from the date of delivery to the original user. Repairs will be undertaken at no cost for labor or materials within this time period.