QSC GX 3
Professional music gear - detailed information and where to buy
QSC
GX 3
Product Info
* Prices may vary. Check retailer for current pricing and availability.
The GX3 is a workhorse amplifier, plain and simple. It delivers clean, reliable power for smaller to mid-sized sound reinforcement systems – think bands, DJs, and corporate events. It’s a no-frills solution focused on doing one thing exceptionally well: amplifying your signal without fuss.
Product Description
- QSC GX 3
- Power Amplifier
- Power: 2x 425 W into 4 ohms
- 2 x 350 W into 8 ohms
- Inputs channel 1 and 2: Two XLR balanced
- two RCA and two 6.3 mm stereo jacks
- Outputs: Speaker Twist combo jacks to 6.35 mm jack
- two binding posts
- Two detented gain controls for precise adjustment
- Frequency range: 20 Hz - 20
- 000 Hz
- Signal-to-noise ratio: 100 dB
- Integrated crossover / switchable crossover
- GuardRail technology protects against overheating and overload without switching off
- Protective circuits and thermal fuses
- Detachable power cord
- Very low installation depth and lightweight
- Dimensions (W x H x D) 483 x 89 x 257 mm
- Format: 19" / 2 U
- Weight: 12.1 kg
PROS
- • Robust build quality with a solid, roadworthy steel chassis.
- • GuardRail technology delivers clean power without abrupt shut-off.
- • Excellent signal-to-noise ratio ensures a pristine, quiet signal path.
- • Compact 2U rack height allows for easy integration into tight spaces.
CONS
- • Limited input options compared to some competitors, lacking AES/XLR.
- • Lacks advanced DSP features common in more modern amplifiers.
- • While lightweight for its power, 12.1 kg is still a substantial lift.
Product Video
Key Features
Power (Watts)
2x 425W @ 4 ohms, 2x 350W @ 8 ohms
Channels
2
Class
AB
Impedance
4-16 ohms
Cooling
Convection (forced air not specified)
Weight
12.1 kg
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Frequently Asked Questions
Yes, the GX3’s power and impedance handling make it suitable for driving passive subwoofers, but ensure the sub’s power handling matches the amp’s output.
GuardRail subtly reduces the power output to prevent clipping, preserving audio fidelity and avoiding harsh distortion without completely shutting down the amplifier.
The GX3 is a more powerful model compared to the GX1 and GX2, offering more headroom and output for larger systems while maintaining the same reliable QSC build quality.
