Compressor / Limiter / Gate

After producing the world's most renown series of compressors, the task of producing a new compressor worthy of our reputation would be daunting for most engineers. Not for dbx®. Our engineers know audio like no one else in the world. Now the fruits of their talents are available to you in the form of the 1066 Stereo Compressor/Limiter/Gate.

Want to instantly add that classic dbx response to your mix? It's there at the touch of the "Auto" button. Or use the independent Attack and Release controls to tailor the 1066 to your specific needs. Unwanted frequencies or mic bleed in the signal path? Frequency dependent gain control is a snap to set up and execute with our Side Chain External button (SC Ext). Use the Side Chain Monitor button (SC Mon) and your favorite EQ to dial in the specific frequencies you want to trigger the device. As has become our standard, the contour switch allows entire mixes to be easily smoothed with soft compression while keeping low frequencies from punching holes in the overall mix. Selectable input and output metering allow you to make sure that everything is matched up level-wise, maximizing your signal-to-noise ratio.

For overall speaker protection, our new PeakStopPlus™ does all previous circuits one better. With a new design, the PeakStopPlus represses those unwanted transients from blowing your drivers while minimizing the distortion common to many other "hard" limiters. Selectable Hard-Knee or OverEasy® characteristics make the 1066 ideal for your gain control needs, whether you're looking for "heavy" almost-special-effects compression or soft, smooth gain leveling. New lightpipe technology replaces standard LED's found on most other units, making the 1066 both very easy to read and much easier to operate.

In the studio, broadcast facility or on the road with a P.A. system, the 1066 is designed for perfectly simple operation. The 1066 allows you to eliminate unwanted signals, flexibly control overall signal gain and guard your overall mix in dual mono or stereo operation.

At the heart of the 1066 is our new dbx V2 VCA. Developed especially for the 1066, 1046 and other 10 series products to come, this revolutionary VCA boasts superb dynamic range characteristics while maintaining very low distortion and almost immeasurable noise characteristics. The bottom line is this: a new VCA working in conjunction with world class design makes the dbx 1066 perform better than compressors selling for hundreds more.

State-of-the-technology VCA's, meticulous component selection, and scrupulous testing procedures are just a few more reasons that the new dbx 1066 is the latest in a long line of pedigreed dbx signal processors.


·       Selectable auto (classic dbx®) or manual (variable Attack and Release) compression

·       Contour switch removes unwanted low frequency information from detector circuit

·       Selectable Overeasy® or Hard Knee compression modes

·       PeakStopPlus™ limiting for setting maximum allowable level with minimal distortion

·       SC Ext and SC Mon for setting up and monitoring external devices for gating function

·       True differentially balanced gold-plated XLR and 1/4" inputs and outputs

·       True RMS level detection

·       Precision metering of input level, output level, and gain reduction

·       True stereo or dual mono operation

·       Switchable +4dBu or -10dBV operation per channel


Input Connectors

XLR and 1/4" TRS (Pin 2 and tip hot)

Input Type

Electronically balanced/unbalanced, RF filtered

Input Impedance

Balanced > 50 kOhm, unbalanced >25 kOhm

Max Input

> +24 dBu balanced or unbalanced


Typically >50 dB at 1 kHz

Output Connectors

XLR and 1/4" TRS (Pin 2 and tip hot)

Output Type

Servo-balanced/unbalanced, RF filtered

Output Impedance

Balanced 120 Ohm, unbalanced 60 Ohm

Max Output

> +21 dBm balanced, > +20 dBm unbalanced

Sidechain Input Connector

1/4" Unbalanced (Tip-Sleeve)

Sidechain Input Type

Unbalanced, RF filtered

Sidechain Impedance

>10 kOhm

Sidechain Max Input Level

>+24 dBu

Sidechain Output Connector

1/4" Balanced TRS (tip hot)

Sidechain Output Type

Impedance balanced, RF filtered

Sidechain Output Impedance

Balanced 2 kOhm, unbalanced 1 kOhm

Sidechain Max Output Level

>+21 dBu balanced or unbalanced


20 Hz to 20 kHz, +0/0.5 dB

Frequency Response

0.35 Hz to 90 kHz, +0/-3 dB


< -95 dBu, unweighted, 22 kHz measurement bandwidth

Dynamic Range

> 118dB, unweighted


0.008% typical at +4 dBu (1 kHz unity gain), 0.08% typical at +20 dBu (1 kHz unity gain), < 0.1% any

amount of compression up to 40 dB, 1 kHz


< 0.1% SMPTE

Interchannel Crosstalk

< -80 dB 20Hz to 20 kHz

Stereo Coupling

True RMS Power Summing

Compressor Threshold Range

-40 dBu to +20 dBu

Compressor Ratio

1:1 to infinity:1

Compressor Threshold Characteristic

Selectable OverEasy® or hard knee

Compressor Attack/Release Characteristic


Compressor Attack/Release Modes

Selectable Manual or Auto

Compressor Manual Attack Time

Scalable program-dependent

Compressor Manual Release Time

Scalable program-dependent

Compressor Auto Attack Time


Compressor Auto Release Time


Compressor Output Gain

-20 to +20 dB

Limiter Threshold Range

+4 dBu to +24 dBu (off)

Limiter Ratio


Limiter Type

PeakStopPlus® two-stage limiter

Limiter Stage 1

PeakStop® brickwall limiter

Limiter Stage 1 Attack Time


Limiter Stage 1 Release Time


Limiter Stage 2

Predictive intelligent program limiter

Limiter Stage 2 Attack Time


Limiter Stage 2 Release Time


Expander/Gate Threshold Range

Off to +15dBu

Expander/Gate Ratio

1:1 to 30:1

Expander/Gate Attack Time

< 100 µsec

Expander/Gate Release Time


SC Ext. Switch

Routes the external sidechain input signal to the detector

SC Mon. Switch

Routes the sidechain signal to the output, interrupting the normal audio

OverEasy® Switch

Activates the OverEasy compression function

Countour Switch

Activates the frequency-dependent detector function

Auto Switch

Activates automatic program-dependent attack and release times, disabling the manual Attack and

Release controls

I/O Meter Switch

Switches between monitoring input and output levels on the Input/Output Level meter

Bypass Switch

Activates the direct input-to-output hard-wire relay bypass. Relay automatically hard-wire bypasses unit

at power-down and provides a power-on delay of 1.5 sec.

Operating Level Switch

(rear panel) Switches the nominal operating level between -10 dBV and +4 dBu simultaneoulsy for both

input and output levels

ST Link Switch

Link both channels for stereo operation. Channel One becomes the master

Gain Reduction Meter

12-segment LED bar graph at 1, 2, 4, 6, 9, 12, 15, 18, 21, 24, 27 and 30 dB

I/O Meter

8-segment LED bar graph at -24, -18, -12, -6, 0, +6, +12, and +18 dBu

Compressor Threshold Meter

3-segment LED bar graph at Below (-), OverEasy and Above (+)

Expander/Gate Threshold Meter

2-segment LED bar graph at Below (-) and Above (+)

Limiter Threshold Meter

1 LED to indicate PeakStopPlus™ limiting

Function Switches

LED indicator for each front-panel switch

Output Transformer Options

Jensen® JT-123-dbx or JT-11-dbx, BCI RE-123-dbx or RE-11-dbx

Operating Voltage

100-120 VAC 50/60 Hz 200-240 VAC 50/60 Hz

Power Consumption

20 Watts


100-120 VAC:250 mA Slow Blow, 200-240 VAC:125 mA Type T

Power Connector

IEC receptacle


1.75"Hx19"Wx9"D (4.4cmx48.3cmx20.1cm)

Unit Weight

5.1 lbs. (2.3 kg)

Shipping Weight

7.5 lbs. (3.4 kg) 

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