QSC GXD4 Professional Power Amplifier – 1600W, Class D, DSP Processing, High-Efficiency Performance
Brand: QSC
Model: GXD4
Category: Professional Power Amplifier
Condition: New
Product Overview
The QSC GXD4 is a high-performance Class D power amplifier, designed for efficient power delivery, low distortion, and built-in DSP processing. With up to 1600W peak output, the GXD4 is optimized for 4Ω and 8Ω speaker systems, ensuring maximum real-world headroom for professional audio applications.
Featuring high and low-pass filters, a 4-band parametric EQ, limiting, and delay, the GXD4 provides extensive loudspeaker processing without requiring external equipment. The large LCD display simplifies setup, while precision rotary encoders allow for fine-tuned DSP parameter control.
Key Features
- Class D Amplification – High efficiency with low heat generation.
- Power Output: 600W per channel (8Ω), 800W per channel (4Ω), 1600W peak output.
- Built-in DSP Processing – Includes high-pass and low-pass filters, 4-band parametric EQ, limiting, and delay.
- Large LCD Display – Simplifies amplifier setup and provides real-time status monitoring.
- Parallel XLR & 1/4-inch TRS Inputs – Ensures broad compatibility with various audio sources.
- Professional Binding Post & NL4 Output Connectors – Supports mono and bi-amp speaker configurations.
- Digital Limiting & Speaker Protection – Prevents damage from temperature rise or overdrive.
- Front Panel LED Indicators – Displays signal presence, input overload, and amplifier clipping.
Technical Specifications
| Specification | Details |
|---|---|
| Power Output (8Ω, dynamic, both channels driven) | 600W per channel |
| Power Output (4Ω, dynamic, both channels driven) | 800W per channel |
| Power Output (8Ω, continuous, both channels driven) | 400W per channel |
| Power Output (4Ω, continuous, both channels driven) | 600W per channel |
| Distortion (1kHz at full rated power) | <1% THD |
| Signal-to-Noise Ratio (A-weighted, 20Hz–20kHz) | 100 dB |
| Input Sensitivity | 1.2 Vrms, 3.9 Vrms |
| Maximum Voltage Gain | 33.5 dB |
| Output Circuitry | Class D |
| Power Requirements (1/8 power at 4Ω) | 100V AC: 3.4A, 120V AC: 2.9A, 230V AC: 1.6A |
| Frequency Response (20Hz–20kHz) | +0.7 dB, -0.8 dB |
| Dynamic Headroom (4Ω) | 1.25 dB |
| Damping Factor (8Ω) | 100 |
| Input Impedance | 20kΩ (balanced), 10kΩ (unbalanced) |
| Maximum Input Level | +23.5 dBu |
| Input Connectors (Each Channel) | 3-pin XLR/F, 1/4-inch TRS (balanced) |
| Output Connectors (Each Channel) | NL4, binding posts |
| Amplifier & Load Protection | Short circuit, open circuit, thermal, RF protection |
| Front Panel Controls & Indicators | Rotary encoders, operational buttons, signal LEDs, clip LEDs, power LED ring, LCD display |
| DSP Functions | High-pass filter, low-pass filter, 4-band parametric EQ, peak limiter, delay (50ms max) |
Box Dimensions & Weight
- Dimensions: 3.5" H x 19" W x 10.2" D (standard rack-compatible)
- Weight: 11.3 lbs
Ideal Applications
- Live Sound Systems
- Professional PA Installations
- Commercial Audio Setups
