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DBX 266XS

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Description

Essential Information About the dbx 266xs Compressor/Gate



  • Versatile Dual Channel: Stereo or dual mono operation to process a vocal track, guitar, bass, drum bus, or auxiliary mix.

  • dbx Musical Compression: OverEasy (progressive knee) or Hard Knee modes for switching from natural control to more aggressive compression.

  • AutoDynamic: automatic, signal-dependent attack and release time management for controlled dynamics without unwanted pumping.

  • Adaptive Expander/Gate: cleans up bleed and background noise with an adjustable threshold over a wide range, ideal for live and studio use.



A Classic dbx Unit Accessible for Stage and Home Studio


The dbx 266xs follows the tradition of dbx dynamic processors: offering direct control and immediately "mix-ready" results. Designed for easy rack integration, it delivers the essential compressor + expander/gate duo in a 1U format. Its approach prioritizes efficiency: quick settings, clear indication of processing action, and sufficiently comprehensive options to adapt equally well to front-of-house mixing or compact studio setups.



Who Is It For and What Are Its Uses?


The 266xs is aimed at musicians, sound engineers, and content creators who want to stabilize levels and improve clarity without complicating the audio chain. On a vocal, it helps position the voice in front of the mix by controlling dynamic variations. On a guitar, it can increase sustain and even out the attack. On drums or percussive sources, it enhances impact while limiting peaks. In live settings, the expander/gate helps reduce stage noise and bleed; in the studio, it refines track cleanup and improves the sense of precision.



Key Features: Control, Musicality, and Speed of Adjustment



OverEasy and Hard Knee: Two Compression Characters


The compressor offers two complementary behaviors. OverEasy applies a smooth transition around the threshold, useful for "invisible" compression on vocals, keyboards, or clean guitars. Hard Knee provides a more direct action, helpful when you want obvious transient control or a more pronounced effect on percussive sounds.



AutoDynamic: Attack and Release Times Adapted to the Signal


The AutoDynamic control adjusts the compressor's behavior based on the audio program. The goal: preserve naturalness, limit artifacts, and facilitate adjustment when sources vary (dynamic vocals, slap bass, irregular guitar playing, etc.). Additionally, the 266xs benefits from return time optimization circuits to maintain smooth compression even during rapid level changes.



Adaptive Expander/Gate: Cleaner Mix


The expander/gate adapts to signal characteristics to close more coherently and avoid overly abrupt cuts. This is an asset for taming breaths, reducing bleed between drum mics, or controlling unwanted noises between vocal phrases. The gate threshold is adjustable over a wide range, allowing fine-tuning according to microphone sensitivity and the acoustic environment.



Clear Metering and Sidechain for Advanced Control


To speed up workflow, the unit features separate displays for gain reduction, compression, and gate: you immediately see what each section is doing to the signal. The RMS level detection favors a response consistent with human loudness perception. Finally, the separate detector input (sidechain) allows influencing compression via external processing, useful for more targeted mixing approaches (e.g., controlling compressor response with a filtered signal).



Technical Specifications



Connectivity



  • Balanced inputs and outputs on XLR

  • Separate detector input (sidechain) for compression control by external processor



Operating Modes



  • Operation: stereo or dual mono

  • Detection type: RMS



Compressor



  • Threshold: -40 dB to +20 dBu

  • Detection type: OverEasy or Hard Knee

  • Compression ratio: variable from 1:1 to infinity:1

  • Attack time: adjustable, signal-dependent (AutoDynamic)

  • Release time: adjustable, signal-dependent (AutoDynamic)



Expander/Gate



  • Threshold: -60 to +10 dBu

  • Ratio: 1:1 to 4:1

  • Attack time: less than 1000 µs

  • Release time: signal-dependent

  • Gate threshold adjustable over a 70 dB range



Levels and Audio Performance



  • Maximum input level: +22 dBu

  • Maximum output level: +18 dBu, 600 ohms

  • Frequency response: 20 Hz to 20 kHz, +0 / -0.5 dB; 0.35 Hz to 80 kHz, +0 / -3 dB

  • Distortion + noise: less than 0.2% at 1 kHz at any compression level

  • Signal-to-noise ratio: better than -93 dB, unweighted (22 kHz)

  • Dynamic range: more than 114 dB, unweighted

  • Cross-talk: less than -95 dB, 20 Hz to 20 kHz



Format and Dimensions



  • Rack units: 1U

  • Dimensions: 14.6 x 48.3 x 4.5 cm

  • Weight: 2.19 kg

Brand reference number: 266XS

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Posted on 17/04/2019
By Julien I.

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