Description
The QSC GXD4 Professional 1600W Power Amplifier with DSP 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.
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.
Product Specifications:
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
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
Product Weight: 11.3 lbs. / 5.1 kg
Product Dimensions: 19 x 10.2 x 3.5 Inches
Shipping Weight: 16 lbs.
Shipping Dimensions (L x W x H): 23.5 x 14.3 x 6.4 Inches
Financing Options
Hassle-Free Financing Available
Get the gear you need now and pay over time. Perfect for working DJs, artists, and sound pros who need pro-grade speakers, lighting, and cases to stay competitive.
- Shop Pay & Afterpay for instant financing right at checkout
- Acima, Synchrony, Progressive & Snap lease-to-own and financing options
- Fast approvals so you buy today and pay monthly
Military & First Responder Discounts
We're proud to support those who serve. Active-duty military, veterans, and first responders qualify for a special discount on your gear. See our Military Discount details here and how to redeem.




