The dbx 166XL is a legendary, dual-channel dynamics processor designed to provide exceptional control over your audio signal. Combining a compressor, limiter, and an advanced noise gate into a single rack space, the 166XL is a staple in professional live sound reinforcement rigs, recording studios, and broadcast setups worldwide. It protects your speakers, prevents digital clipping, and smooths out uneven performances with absolute precision.
At the heart of the 166XL is dbx’s patented OverEasy® compression technology, which delivers a smooth, musical compression curve that tames dynamic peaks (like inconsistent vocals or punchy bass guitars) without sounding artificial. Its advanced program-dependent gate utilizes a continuously variable release time to cleanly eliminate background stage rumble or mic hiss without cutting off trailing notes. Additionally, the integrated PeakStopPlus™ limiter serves as a brick-wall defense system, stopping sudden volume spikes before they can damage your power amplifiers or speakers.
Key Features:
Dual-Channel or Stereo Linkable: Can operate as two completely independent mono processors or linked for perfect stereo tracking at the touch of a button.
OverEasy® & Hard Knee Compression: Choose between smooth, transparent level control or aggressive peak limiting to suit your audio source.
Advanced Program-Dependent Gate: Features an adjustable threshold and ratio, using an intelligent algorithm to eliminate noise without causing gate "chatter."
PeakStopPlus™ Limiting: A proprietary limiting circuit that prevents clipping and transients from passing through to your amplifiers.
Auto/Manual Attack and Release: Offers quick setup via the "Auto" mode or precise, manual timing adjustments for seasoned sound engineers.
Precision LED Metering: High-visibility gain reduction meters and input/output level displays provide instant visual monitoring.
Sidechain Insert Loop: Allows you to patch in external equalizers for frequency-conscious compression (such as de-essing vocals).
Technical Specifications:
System Type: Dual-Channel Dynamics Processor (Compressor/Gate/Limiter)
Inputs/Outputs: Balanced 1/4" TRS and XLR (Gold-Plated)
Frequency Response: 20 Hz – 20 kHz (+0/-0.5 \text{ dB})
Dynamic Range: >115 dB
Total Harmonic Distortion (THD + Noise): <0.04%
Operating Voltage: 100V – 240V AC (Internal Power Supply)
Chassis Size: Standard 19" Rack-Mountable (1U)