The dbx 560A Compressor/Limiter brings classic dbx VCA-based dynamics processing to the compact 500 Series format. Inspired by the renowned dbx 160A, the 560A combines OverEasy® compression, selectable Hard Knee operation, and True RMS level detection to deliver precise control over vocals, instruments, and other professional audio sources.
Designed for recording studios, broadcast production, and live sound applications, the dbx 560A provides adjustable threshold, compression ratio, and output gain controls. Its program-dependent attack and release characteristics help maintain natural dynamics, while the exclusive Infinity+ negative-ratio compression provides additional creative processing options. The single-slot design makes it a versatile addition to compatible powered 500 Series racks.
Features & Benefits
Classic dbx VCA Compression
Based on the compression approach of the dbx 160A, the 560A uses VCA-based processing and True RMS level detection to provide consistent dynamics control.
It is suitable for smoothing uneven vocal levels, controlling bass and guitar dynamics, and adding punch to drum recordings.
Selectable OverEasy® and Hard Knee Compression
The dbx 560A offers two compression characteristics to accommodate different audio sources.
OverEasy® mode provides a gradual transition into compression for smoother, more natural-sounding level control.
Hard Knee mode applies compression more abruptly at the selected threshold, making it useful for aggressive dynamics processing and limiting applications.
Wide Compression Ratio Range
The adjustable compression ratio ranges from 1:1 through infinity:1 and continues into negative-ratio compression.
This allows engineers to choose subtle dynamic leveling, stronger compression, conventional limiting, or specialized inverse-compression effects.
Infinity+ Negative-Ratio Compression
The 560A features dbx Infinity+ compression, which extends beyond conventional infinity:1 limiting into negative compression ratios as low as −1:1.
In this mode, increasing the input level above the threshold can cause the output level to decrease.
This provides a distinctive processing option for creative sound design and controlling selected dynamic passages.
Program-Dependent Attack and Release
The dbx 560A automatically adapts its attack and release response to the incoming audio signal.
These program-dependent characteristics help maintain musical dynamics while providing effective level control without requiring separate attack and release adjustments.
Precise LED Metering
The front panel includes a 19-segment switchable input/output level meter and a 12-segment gain reduction meter.
These indicators provide immediate visual feedback for monitoring signal levels, compression activity, and output adjustments.
Compact 500 Series Integration
The dbx 560A occupies a single slot in a compatible powered 500 Series chassis.
Its modular design is ideal for professional audio users who want classic analog dynamics processing without dedicating space to a full-width rackmount compressor.
Key Features
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Professional single-channel VCA compressor/limiter
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Inspired by the classic dbx 160A
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Patented OverEasy® soft-knee compression
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Selectable Hard Knee compression
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True RMS level detection
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Compression ratio from 1:1 to infinity:1 through −1:1
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Exclusive Infinity+ negative-ratio compression
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Program-dependent attack and release
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Adjustable threshold from −40 dBu to +20 dBu
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Adjustable output gain from −20 dB to +20 dB
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19-segment switchable input/output level meter
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12-segment gain reduction meter
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Front-panel bypass control
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Compact single-slot 500 Series design
Ideal Applications
The dbx 560A is suitable for recording studios, broadcast production, live sound systems, and modular analog processing racks.
Common applications include vocal leveling, drum compression, bass and guitar dynamics control, instrument tracking, and creative compression effects.
dbx 560A Technical Specifications
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Specification
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Details
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Manufacturer
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dbx Professional
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Model
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560A
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Manufacturer Part Number
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DBX560A
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Product Type
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Compressor/Limiter
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Module Format
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500 Series
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Processing Channels
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1
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Compression Technology
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VCA-based, True RMS detection
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Input Type
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Electronically balanced/unbalanced, RF filtered
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Input Impedance
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40kΩ balanced; 20kΩ unbalanced
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Maximum Input Level
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+22 dBu
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CMRR
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Greater than 40 dB; typically greater than 55 dB at 1 kHz
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Output Type
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Electronically balanced/unbalanced, RF filtered
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Output Impedance
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30Ω balanced; 15Ω unbalanced
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Maximum Output Level
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+22 dBu
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Frequency Response
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20 Hz–20 kHz, +0/−0.5 dB
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Extended Frequency Response
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0.5 Hz–100 kHz, +0/−3 dB
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Noise
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Less than −97 dBu, unweighted (22 Hz–22 kHz)
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THD + Noise (No Compression)
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Typically less than 0.005%, 1 kHz at 0 dBu input
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THD + Noise (With Compression)
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Typically less than 0.07%, up to 40 dB compression at 1 kHz
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Dynamic Range
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Greater than 119 dB
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Output Gain Adjustment
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−20 dB to +20 dB
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Compressor Threshold
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−40 dBu to +20 dBu
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Compression Characteristics
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Selectable OverEasy® or Hard Knee
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Compression Ratio
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1:1 to infinity:1 through −1:1
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Maximum Compression
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60 dB
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Attack Time
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Program-dependent; typically 15 ms at 10 dB, 5 ms at 20 dB, 3 ms at 30 dB
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Release Time
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Program-dependent; typically 8 ms at 1 dB, 80 ms at 10 dB, 400 ms at 50 dB
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Release Rate
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125 dB/second
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Input/Output Metering
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19-segment switchable LED meter
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Gain Reduction Metering
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12-segment LED meter
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Bypass
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Front-panel bypass switch
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Power Requirements
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±16V DC
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Current Draw
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60 mA per power rail
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Power Consumption
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1.92W
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Rack Compatibility
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Compatible powered 500 Series chassis
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Rack Space
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1 module slot
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Dimensions
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5.25"H × 1.5"W × 6"D
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Net Weight
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1.3 lbs (0.59 kg)
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Shipping Weight
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1.7 lbs (0.77 kg)
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Installation and Compatibility
The dbx 560A requires a compatible powered 500 Series chassis supplying ±16V DC. It cannot operate as a standalone compressor and must be installed in a suitable modular processing frame.
Audio input and output connections are provided through the chassis, with external connector types depending on the selected frame.
The module is designed for professional line-level signal processing and can be incorporated into compatible recording and live sound signal chains.
Need a Compatible 500 Series Chassis?
The dbx 560A Compressor/Limiter requires a powered 500 Series chassis with an available module slot and sufficient power capacity.
Before purchasing, verify that the chassis supports the 560A's ±16V DC requirements and provides suitable audio connections.
Why Buy the dbx 560A from Audio Supply?
Audio Supply offers professional dbx audio processing equipment for recording, broadcast, and live sound applications. The dbx 560A combines classic analog compression, flexible dynamics control, and compact 500 Series integration for professional audio systems.
