QSC GXD4 2-Channel 400W Power Amplifier
Key Features
- 1600W Max Power Output
- Matched for 4 Ohm and 8 Ohm Speakers
- Efficient Class-D Power Amplifier
- Built-In DSP Speaker Processor
- High & Low-Pass Filters with 4-Band EQ
- Digital Limiting with Speaker Protection
- LCD Display
- Parallel XLR and 1/4″ Inputs
- Binding Post and NL4 Speaker Connects
- Lightweight: 11.3 lbs
Description
The GXD 4 from QSC is a power amplifier designed for professional PA systems utilizing speakers with 4 and 8 ohm loads and a maximum output of 1600W. The GXD 4 employs a class D output stage with a universal power supply for high performance and efficiency, while keeping the unit lightweight at 11.3 lbs. The integrated DSP section includes High and Low-Pass filters (24dB LR), 4-band parametric equalizer, signal alignment delay, and RMS/Peak speaker protection limiting.
Great for speaker processing, this power amp features E Series Entertainment System DSP Tunings, and includes precision rotary encoders that allow you to calibrate gain and DSP parameters.
Features
The GXD4 amplifier from QSC is dependable and versatile enough for any professional audio application. Whether you’re installing a house of worship system or building your band’s portable PA, you’ll come to rely on the sound and convenience the GXD4 provides. QSC packs 1600 watts of Class-D power along with flexible digital signal processing – you don’t have to plug in your laptop or lug around racks of outboard gear, you can configure your system right from the amp.
The parallel XLR and 1/4″ TRS input connectors offer broad compatibility with convenient loop-through capabilities, while the professional binding posts and NL4 connector provide mono and bi-amped speaker connections. In addition to the limiting offered on inputs and outputs, the GXD employs smart speaker protection by providing settings for the loudspeaker’s continuous output and impedance (4 ohm or 8 ohm). The GXD 4 ships with a standard IEC power cord.
QSC GXD4 Features
- Two-channel, 400W power amplifier
- High peak output power with up to 1600W
- Power levels matched to the most popular loudspeakers and optimized for maximum real-world headroom into 4–ohm and 8-ohm speaker systems
- Adjustable speaker protection to match your loudspeaker’s power and impedance
- Front panel LEDs indicate signal presence, input overload, and amplifier clipping.
- 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 parameteric EQ, 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
- Outputs: Professional binding post and NL4 connectors (compatible with NL2) provide for mono and bi-amp speaker connections
- Precision rotary encoders for gain and DSP parameter control
- Digital limiting automatically protects the amplifier from damage due to temperature rise or overdrive
About QSC GXD 4 and QSC’s GXD Power Amplifiers
The GXD4 delivers high peak output power with up to 1600 watts. Other features include adjustable speaker protection for matching an individual loudspeaker’s power and impedance, as well as digital limiting that automatically prevents damage to the amplifier with rising temperatures or overdrive.
Optimized to deliver maximum real-world headroom, GXD amps are ideal for incorporating into 4Ω and 8Ω loudspeaker systems. Their LCD allows you to control and monitor in dim lighting and includes three buttons for menu navigation, and two knobs for adjusting parameters. Edit, store, and recall up to 18 User Presets to match any configuration or system.
Explore versatile connectivity options with parallel XLR and ¼” TRS connectors for inputs on each channel, and professional NL4 outputs. Binding post connectors enable mono and bi-amp speaker connectivity as well.
Specifications
Amplifier
Number of Channels |
2
|
Amplifier Power Rating |
8 Ohms:
600 W Peak per Channel 400 W RMS per Channel 4 Ohms: 800 W Peak per Channel 600 W RMS per Channel |
Amplifier Class |
Class-D
|
Performance
Protections |
DC Fault, Open Circuit, RF, Short Circuit, Thermal
|
Frequency Response |
20 Hz to 20 kHz +0.7/-0.8 dB
|
Damping Factor |
100
|
Input Sensitivity |
1.2 Vrms
3.9 Vrms |
Input Impedance |
10 Kilohms (Unbalanced)
20 Kilohms (Balanced) |
Max Gain |
33.5 dB
|
Max Input Level |
+23.5 dBu
|
SNR |
100 dBA
|
THD |
< 1% (1 kHz, at Rated Power)
|
Signal Processing
Audio Delay |
Adjustable Up to 50 ms
|
Crossover |
Yes
|
EQ |
4-Band Parametric EQ
|
Filters |
High-Pass:
20 Hz to 4 kHz, 24 dB/Octave Linkwitz-Riley Low-Pass: 60 Hz to 4 kHz, 24 dB/Octave Linkwitz-Riley |
Limiting |
Peak
|
Connectivity
Analog Audio I/O |
2x XLR 3-Pin Female Input
2x 1/4″ TRS Balanced Input 2x speakON NL4 Output 2x Binding Post Pair Output |
Digital I/O |
0x TOSLINK
|
USB I/O |
1x USB-B
|
Power
AC Input Power |
Universal:
100 to 240 VAC, 50 / 60 Hz |
Current Consumption |
100 VAC, 4 Ohms:
3.4 A (1/8 Power) 120 VAC, 4 Ohms: 2.9 A (1/8 Power) 230 VAC, 4 Ohms: 1.6 A (1/8 Power) |
Physical
Display & Indicators |
2x Green LED (Signal)
2x Red LED (Clip) 1x Blue LED (Power) 1x LCD |
Rackmount Size |
2 U
|
Certifications |
CE, RoHS, UL, WEEE
|
Dimensions |
3.5 x 19.0 x 10.2″ / 8.9 x 48.3 x 25.9 cm
|
Weight |
11.3 lb / 5.1 kg
|
Packaging Info
Package Weight |
16 lb
|
Box Dimensions (LxWxH) |
23.5 x 14.3 x 6.4″
|