QSC GXD4 Power Amplifier, 800W @ 4 Ohms

The QSC GXD4 Power Amplifier.

QSC GXD4 Power Amplifier Features

- High peak output power with up to 1600 watts from the GXD 4 and a whopping 4500 Watts from the GXD 8.
- 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 and low-pass filters, 4-band parametric EQ, limiting, and delay.
- E Series Entertainment System DSP Tunings are now available for GXD processing amplifiers:
- Large LCD display simplifies amplifier setup and indicates amp status.
- Inputs: Parallel XLR and 1/4-inch 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 GXD4 Power Amplifier Specifications

- Power (Both Channels Driven):
  - 4 Ω: 800W
  - 8 Ω: 600W
- Typical Distortion: <1 percent THD (1kHz at full rated power)
- Signal to Noise (20 Hz - 20 kHz): 100 dB
- Input Sensitivity: 1.2 V rms
- Voltage Gain: 33.5 dB
- Output Circuitry: Class D
- Power Requirements: 1.6 A @ 230V
- Frequency Response: 20 Hz–20 kHz, +0.7 dB, -0.8 dB
- Dynamic Headroom (4 Ω): 1.25 dB
- Input Impedance: 20 kΩ (balanced), 10 kΩ (unbalanced)
- Maximum Input Level: +23.5 dBu
- Input Connectors (each channel):
  - 3-pin XLR/F (balanced)
  - ¼-inch TRS (balanced)
- Output Connectors (each channel): Speakon, 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 indicate signal presence
  - 2x Red A/D Clip LEDs indicate input over-drive and/or amplifier current clipping
  - Blue Power LED ring indicates AC on
  - 2.12-inch x 1.0-inch, 256 x 128 pixel LCD
- DSP Functions:
  - High-pass filter, 4th-order Linkwitz-Riley, adjustable frequency 20 Hz to 4 kHz
  - Low-pass filter, 4th-order Linkwitz-Riley, adjustable frequency 60 Hz to 4 kHz
  - 4-band parametric EQ with variable frequency, gain, and bandwidth
  - Peak limiter with power, aggressiveness, and impedance selection
  - Delay 50 msec max

Physical:
- Dimensions (W x H x D): 483 x 89 x 259 mm
- Weight: 5.1 kg