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DBX 1066 Dual Compressor/Limiter


Available on backorder


DBX 1066 Dual Compressor/Limiter

DBX 1066 Dual Compressor/Limiter Gate Jack/XLR In and Out 19″  1U

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.

Product Features

  • 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


  • Connectors: XLR and 1/4″ TRS (Pin 2 and tip hot)
  • Type: Electronically balanced/unbalanced, RF filtered
  • Impedance: Balanced > 50 kOhm, unbalanced >25 kOhm
  • Maximum Input Level: > +24 dBu balanced or unbalanced
  • CMRR: Typically >50 dB at 1 kHz


  • Connectors: XLR and 1/4″ TRS (Pin 2 and tip hot)
  • Type: Servo-balanced/unbalanced, RF filtered
  • Impedance: >Balanced 120 Ohm, unbalanced 60 Ohm
  • Max Output Level: > +21 dBm balanced, > +20 dBm unbalanced

Side Chain Input

  • Connector: 1/4″ TS
  • Type: Unbalanced, RF filtered
  • Impedance: >10 kOhm
  • Max Input Level: >+24 dBu

Side Chain Output

  • Connector: 1/4″ TRS (tip hot)
  • Type: Impedance balanced, RF filtered
  • Impedance: Balanced 2 kOhm, unbalanced 1 kOhm
  • Max Input Level: >+21 dBu balanced or unbalanced

System Performance

  • Bandwidth: 20 Hz to 20 kHz, +0/0.5 dB
  • Frequency Response: 0.35 Hz to 90 kHz, +0/-3 dB
  • Noise: < -96 dBu, unweighted, 22 kHz measurement bandwidth
  • Dynamic Range: > 118dB, unweighted
  • THD + Noise: 0.008% typical at +4 dBu, 1 kHz, unity gain0.08% typical at +20 dBu, 1 kHz, unity gain< 0.1% any amount of compression up to 40 dB, 1 kHz
  • IMD: < 0.1% SMPTE
  • Interchannel Crosstalk: < -80dB, 20 Hz to 20 kHz
  • Stereo Coupling: True RMS Power Summing™


  • Threshold Range: -40 dBu to +20 dBu
  • Ratio: 1:1 to infinity:1
  • Threshold Characteristic: Selectable OverEasy® or hard knee
  • Attack/Release Chracteristic: Auto Dynamic™
  • Attack/Release Modes: Selectable Manual or Auto
  • Manual Attack Time: Scalable program-dependent
  • Manual Release time: Scalable program-dependent
  • Auto Attack Time: Program-dependent
  • Auto Release Time: Program-dependent
  • Output Gain: -20 to +20 dB


  • Threshold Range: +4 dBu to +24 dBu (off)
  • Ratio:infinity: 1
  • Limiter Type: PeakStopPlus™ two-stage limiter
  • Stage 1: PeakStop™ brickwall limiter, Attack time: Zero, Release Time: Zero
  • Stage 2: Predictive intelligent program limiter, Attack Time: Program-dependent, Release Time: Program-dependent


  • Threshold Range: Off to +15dBu
  • Ratio: 1:1 to 30:1
  • Attack Time: < 100 µsec
  • Release Time: Program-dependent

Function Switches

  • SC Ext.: Routes the external sidechain input signal to the detector
  • SC Mon: Routes the sidechain signal to the output, interrupting the normal audio
  • OverEasy®: Activates the OverEasy compression function
  • Contour: Activates the frequency-dependent detector function
  • Auto: Activates automatic program-dependent attack and release times, disabling the manual Attack and Release controls
  • I/O Meter: Switches between monitoring input and output levels on the Input/Output Level meter
  • Bypass: 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 (rear panel): Switches the nominal operating level between -10 dBV and +4 dBu simultaneoulsy for both input and output levels
  • ST Link: 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
  • Input/Output 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 (+)
  • Exp/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