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The dbx® 286s is a full featured Channel Strip Processor that delivers a studio quality microphone/instrument preamplifier and four processors that can be used independently or in any combination. Why mic up vocals and instruments through a noisy, blurry mixer? The sonically pristine dbx 286s Mic Preamp has all the features you need, including wide-ranging input gain control, switchable +48V phantom power, and an 80Hz high-pass filter to remove low frequency hum, rumble or wind. Use the patented dbx OverEasy® compressor to transparently smooth out uneven acoustic tracks or deliver that classic "in your face" vocal performance that only a dbx compressor can. Eliminate vocal sibilance and high frequency distortion from instruments such as cymbals with the frequency tunable De-Esser. Fine-tune the Enhancer HF Detail control to add sparkle and crispness to your tracks and make adjustments to the LF Detail control to add fullness and depth to vocals and bass instruments while cleaning up the muddy low midrange frequencies. And, the separate threshold and ratio controls on the Expander/Gate allow you to subtly reduce headphone leakage or radically gate noisy guitar amps.

The dbx 286s offers a full compliment of metering and status LEDs to visually guide you to achieving the right sound. The floating balanced XLR Mic Input accepts balanced or unbalanced inputs to easily connect to professional and home studio microphones. The additional 1/4" TRS Line Input can accept balanced/unbalanced signals to process live electronic instruments or pre-recorded tracks at mixdown. Use the Insert jack to interface between the Mic Preamp and the signal processing sections to "loop out" to external processors (such as EQ or delay unit) or to mix the Mic Preamp's signal out to an external destination.

The cost and hassle of patching together multiple processors for use on one track can be frustrating. The dbx 286s provides you with all the mic processing you need in one box, with the shortest, cleanest signal path to keep your music sounding its best!

Additional information

Weight 2.97 kg
Product can be split into multiple boxes



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

Ship Separately



Mic Preamp Connector
XLR Floating balanced, Pin 2 Hot

Mic Preamp Input Impedance

Mic Preamp gain
0dB to +60dB

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

>40dB, typically 55dB

Mic Preamp max input level
0.2Vrms, Gain = 30dB

Mic Preamp Equivalent Input Noise (EIN)
-125dBu, 22Hz-22kHz, 150Ω source impedance

Input Connectors
(line) Floating balanced, TIP Hot

Input Impedance
(line) 10kΩ unbalanced, 20kΩ balanced

Max Input
(line) >+21dBu, balanced or unbalanced

Input Gain Range
(line) -15dB to +45 dB

Insert Connector
1/4" TRS: Normalled; tip is Send, ring is Return

Insert Impedance
>5kΩ (ring-return); 100Ω (tip-send)

Insert Max Level
>+21dBu; >+20dBm (600Ω load-tip)

Insert Noise
<-84dBu, unweighted (20Hz-20kHz); LINE GAIN Control set to 0dB

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

Output Connectors
1/4" Balanced/Unbalanced TRS Connectors

Output Impedance
100Ω unbalanced, 200Ω balanced

Max Output
>+21dBu, >+20dBm (600Ω load)

Gain Adjustment Range
-30dB to +10dB

<-80dBu unweighted (20Hz-20kHz); Both Gain Controls set for 0dB, all processing controls OFF

Frequency Response
20Hz to 20kHz, +0.5, -0.5dB

<0.08%THD, 20Hz-20kHz, +10dBu, all Processing Controls OFF

Compressor Threshold Range
-40dBu to +20dBu

Compressor Threshold Characteristic

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

Max Compression

Compressor Attack Time
Program-Dependent; >1s for small level increases, down to 10ms for larage increases

Compressor Release Time
Program-Dependent; adjustable between approximately 1dB/sec and 75dB/sec

Compressor Distortion
Typically <0.05%THD, 20Hz-20kHz, 15dB G/R, +10dBu Output, DENSITY @ 0

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

De-esser Characteristic
Wideband Gain Reduction

De-esser Frequency Range
800Hz to 10kHz High Pass, 12dB/octave

De-esser Release Time
12dB/octave Program-Dependent; approximately 1mS/dB

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

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

Expander/Gate Threshold Range
OFF to +15dBu

Expander/Gate Ratio
Adjustable 1.5:1 to 10:1

Expander/Gate Max Depth

Expander/Gate Attack Time
Program-Dependent, approximately 2mS (at maximum attenuation)

Expander/Gate Release Time
Program-Dependent, approxiamtely 10mS/dB

Expander/Gate Dynamic Range
Typically 105dB

Power Consumption

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

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

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

Unit Weight
4.5 lbs/2.04 Kgs

Shipping Weight
6.54 lbs/2.97 Kgs






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STUDIO Microphones DBX 286s