QSC GXD4 Professional Power Amplifier (GXD 4) with Peak 1600W

Onboard DSP, large LCD display, built-in powerful loudspeaker

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What's in the box:

  • QSC GXD4
  • IEC Power Cord
  • Limited Three-Year Warranty


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The GXD Series Amplifiers are ideal for entertainment and production applications requiring performance and the convenience of integral signal processing. The hallmarks of the QSC brand - professional audio quality, engineering and manufacturing focused on long-term reliability - are all intrinsic to GXD. Add contemporary styling, multiple routing options, light weight, digital signal processing and advanced protection circuitry, and the GXD Series clearly represents real economic value. The GXD series is optimized for use with 8 and 4 ohm loudspeaker loads. GXD amplifiers deliver just the right amount of power to the most popular speakers used by entertainers and production professionals.


  • High peak output power with up to 1600 Watts from the GXD 4
  • Power levels matched to the most popular loudspeakers and optimized for maximum real-world headroom into 4Ω and 8Ω speaker systems.
  • Class-D output stage with a universal power supply for high performance and efficiency.
  • Extensive and powerful loudspeaker processing built in. Includes High & Low-Pass filters, 4-band PEQ, Limiting, and Delay.
  • Large LCD display simplifies amplifier setup and indicates amp status.
  • Inputs: Parallel XLR and 1/4" TRS connectors for compatibility with any source while providing convenient loop-thru capability.
  • Precision rotary encoders for gain and DSP parameter control.
  • GXD amplifiers are set to prevent the amplifier from being driven into clipping
  • Outputs: Professional binding post and NL4 connectors (compatible with NL2) provide for mono and bi-amp speaker connections.
  • Digital Limiting automatically protects the amplifier from damage due to temperature rise or overdrive.
  • Adjustable speaker protection to match your loudspeaker's power and impedance.
  • Front panel LEDs indicate signal presence, input overload, and amplifier clipping.

Be sure to check out the brochure for more information!

Specifications for the QSC GXD4 Professional Power Amplifier

{ "Stereo Mode - Watts Per Channel:" : { "8 Ohm Peak, Both Channels Driven" : "600 Watts ", "4 Ohm Peak, Both Channels Driven" : "800 Watts ", "8 Ohm Continuous, Both Channels Driven" : "400 Watts ", "4 Ohm Continuous, Both Channels Driven" : "600 Watts" }, "Distortion (typical, 1 kHz at full rated power)" : "< 1% THD", "Signal-to-Noise Ratio (A-weighted, 20 Hz - 20kHz)" : "100 dB", "Input Sensitivity" : "1.2 Vrms, 3.9 Vrms", "Voltage Gain (8 Ohms)" : "33.5 dB", "Output Circuitry" : "Class D", "Power Requirements - 1/8 Power at 4 Ohms:" : { "100 VAC" : "3.4 Amps ", "120 VAC" : "2.9 Amps ", "230 VAC" : "1.6 Amps" }, "Frequency Response" : "20 Hz - 20 kHz, +0.7 dB,-0.8 dB", "Dynamic Headroom (4 Ohms)" : "1.25 dB", "Damping Factor" : "100", "Input Impedance:" : [ "20 kOhms (balanced) ", "10 kOhms(unbalanced)" ], "Maximum Input Level" : "+23.5 dBu", "Input Connectors (each channel)" : "3-pin XLRF /1/4" TRS, balanced", "Output Connectors (each channel)" : "NL4 (Channel 1- 1+/-, Channel 2 - 2+/-), binding posts", "Amplifier and Load Protection:" : [ "Short circuit ", "Open circuit ", "Thermal ", "RF protection ", "Load protected against DC faults" ], "Front Panel Controls and Indicators:" : [ "2x Rotary Encoders ", "3x Operational Buttons (HOME, ENTER, EXIT) ", "2x Green Signal LEDs, indicates signal presence ", "2x Red A/D Clip LEDs, indicate input over-drive and/or amplifier current clipping ", "Blue Power LED ring, AC on ", "2.12" x 1.0", 256 x 128 pixel LCD panel" ], "DSP Functions:" : [ "High Pass Filter, 4th order LR, adjustable Frequency 20 Hz to 4 kHz ", "Low Pass Filter, 4th order LR, adjustable Frequency 60 Hz to 4 kHz ", "4-band PEQ, with variable Frequency, Gain, and Bandwidth ", "Peak Limiter, with Power, Aggressiveness, and Impedance selection ", "Delay 50 msec max." ], "Dimensions (HxWxD)" : "3.5" (2RU) x 19" x 10.2"(89mm x 483mm x 259mm)", "Weight" : "11.3 lbs (5.1 kg)", "Agency Approvals" : "UL, CE, RoHS/WEEE Compliant", "Carton and Contents" : "Power cable and quick start guide" }

Research Materials for QSC GXD4 (QSC-GXD4)

We've added technical materials to help with your buying decision. Even if you're technically inclined, you may want to consider talking to our sales techs to make sure this item is the right fit for your particular use. 800.562.6006

GXD4 (QSC-GXD4) Specifications

GXD4 (QSC-GXD4) User Guide

GXD4 (QSC-GXD4) Drawing

QSC Technical Note - E-Series DSP

QSC: GXD - "Universal Power"

QSC: GXD Amplifiers - "4 Ohms"

QSC GXD - "Shallow Depth"

Understanding Sound Reinforcement - Power Amplifiers (Part 2)

Understanding Sound Reinforcement - Power Amplifiers (Part 1)

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