The QSC GX3 is a lightweight, reliable 2-channel power amp built for touring, mobile DJ rigs, and installed sound — delivering 300W per channel at 8Ω or 425W per channel at 4Ω. Features QSC's GuardRail protection to prevent overheating/overdrive damage without cutting the show, a built-in subwoofer/satellite crossover switch, and detented gain controls for precise channel matching.

Fully tested and confirmed working — powers on cleanly, both channels pass signal with no dropouts or distortion. Front panel Power, Signal, and Clip LEDs all function correctly.

Inputs: XLR, 1/4" TRS, and RCA phono (balanced/unbalanced). Outputs: Speakon combo (accepts 1/4" TS or 2-/4-pole Speakon) plus binding posts. Rackmountable, 2U, only 10.1" deep.

Sourced from Square Wave Productions' professional touring/installation inventory.

Specs:

  • 300W/ch @ 8Ω, 425W/ch @ 4Ω (both channels driven)
  • Class B biasing, GuardRail protection
  • Subwoofer/satellite crossover (100Hz switch)
  • Inputs: XLR + 1/4" TRS (balanced), RCA phono (unbalanced)
  • Outputs: Speakon combo, binding posts
  • 2U rackmount, 10.1" depth
  • Weight: ~26-27 lbs

Included: Amplifier + power cable

Listed16 hours ago
ConditionVery Good (Used)
Very Good items may show a few slight marks or scratches but are fully functional and in overall great shape.Learn more
Brand
Model
  • GX3 2-Channel Power Amplifier
Finish
  • Silver
Categories
Year
  • 2010s

Product safety information may be available here.

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Anaheim, CA, United States
Joined Reverb:2026

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