The dbx 166XL is a professional dual-channel compressor, limiter, and noise gate engineered to deliver comprehensive dynamics processing in a single rack space for studio, live sound, and broadcast applications. Combining classic dbx VCA technology with advanced gate circuitry, this unit provides transparent compression with switchable OverEasy soft-knee or hard-knee characteristics, allowing engineers to achieve smooth musical gain reduction or aggressive limiting as required. The integrated PeakStopPlus limiter offers two-stage protection against transient peaks without introducing distortion. Each channel features independent controls for threshold, ratio, attack, release, and output gain, with full sidechain functionality accessible via rear-panel insert jacks for external processing such as frequency-selective compression or keyed gating. The Smart Gate section includes variable threshold and release controls with advanced timing algorithms ensuring natural, artifact-free closure on vocals, drums, and other program material. Stereo coupling with True RMS Power Summing maintains rock-solid imaging even under heavy compression when channels are linked. Comprehensive connectivity includes balanced XLR and 1/4-inch TRS inputs and outputs, with switchable +4dBu or -10dBV operating levels to interface with professional or consumer equipment. This unit is being sold strictly for parts or repair and is not in working condition. It powers on but exhibits intermittent signal dropouts on both channels, distorted audio on Channel 2, and unresponsive gate controls on Channel 1. The unit has visible wear including scratched front panel lettering, dented rack ears, and loose input jacks. Internal inspection reveals signs of previous repair attempts with some solder joints appearing cold and one capacitor lead lifted from the circuit board. Due to its current non-functional state and physical condition, this dbx 166XL is offered as-is for technicians seeking a donor unit for components, chassis parts, or as a repair project. Read more

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