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QSC GXD 4 Professional DSP Power Amplifier

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Item#: GXD4
UPC: 684284064899
Availability: In Stock Online
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I DJ NOW - Babylon, NY
Mon - Sat 10am - 8pm
Sun 11am - 5:00pm

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Sat 10am - 7pm
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Free Shipping on most orders with minimum purchase of $50 or more for a limited time. Ground shipments only in the lower 48 contiguous United States. Excludes oversized or overweight items such as oversized speakers, oversized cases, trussing & staging. Other exclusions include some fluids, some parts & special orders. Any questions, please call 1-800-355-7746 during normal business hours. Offer subject to change or termination without notice. Not responsible for typographical errors.



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About This Product

QSC GXD 4 Professional DSP Power Amplifier

The GXD Series amplifiers from QSC are ideal for professional entertainers who require unmatched performance at an affordable price point. These amplifiers provide enormous Class-D power in a lightweight package, and flexibility due to their easy-to-use DSP. With their high output Class-D power and DSP, the GXD amplifiers from QSC are an outstanding value.

QSC GXD 4 features:

  • 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.
  • 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.
QSC GXD 4 Specifications
Stereo Mode - Watts per channel  
8Ω dynamic, both channels driven
600 Watts
4Ω dynamic, both channels driven 800 Watts
8Ω continuous, both channels driven 400 Watts
4Ω continuous, both channels driven 600 Watts
Distortion (typical)
1 kHz at full rated power
< 1% THD
Signal to Noise (A-weighted, 20 Hz – 20 kHz) 100 dB
Input Sensitivity 1.2 Vrms, 3.9 Vrms
Voltage Gain (8Ω) 33.5 dB
Output Circuitry Class D
Power Requirements: 1/8 power at 4Ω
- 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 (4Ω) 1.25 dB
Damping Factor 100
Input Impedance (Ω) 20k (balanced), 10k (unbalanced)
Maximum Input Level +23.5 dBu
Input Connectors (each channel) 3-pin XLR/F / 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 2 x Rotary Encoders
3 x Operational buttons (HOME, ENTER, EXIT)
2 x Green Signal LEDs, indicate signal presence
2 x 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
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, Agressiveness, and Impedance selection
Delay 50 msec max.
Dimensions (HWD) 3.5" (2 RU) x 19" x 10.2" (89 mm x 483 mm x 259 mm)
Weight (Net) 11.3 lb (5.1 kg)
Weight - Shipping 15.4 lb (7.0 kg)
Agency Approvals UL, CE, RoHS/WEEE compliant
Carton and Contents Power cable, and quick start guide
The GXD4 Box Includes:

(1) QSC GXD 4 Professional Power Amplifier
(1) Power cable
(1) QuickStart Guide