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QSC GX3 300 Watt 8 Ohm Power Amplifier

B&H # QSGX3 Mfr # GX3
In Stock
Free Expedited Shipping
You Pay: $299.99
Product Highlights
  • Optimized for 4 and 8 ohm Speakers
  • XLR, 1/4" TRS and Phono Inputs
  • Speakon® Combo Outputs
  • Subwoofer/Satellite Crossover Built-in

The QSC GSX GX3 Power Amplifier is designed to provide power, portability and professional sound quality at an affordable price. The GX3 features 300 watts of power at 8 ohms (both channels driven) in a design that's easy to install and delivers flexible features. The rear panel features balanced XLR and 1/4" phone inputs, as well as unbalanced RCA phono inputs for complete compatibility with professional and consumer audio gear.

The outputs feature speaker binding posts and Speakon® connections. Detented gain controls provide precise level settings. QSC's GuardRail protection delivers full peak power while preventing detrimental overloads due to excessive clipping or overheating. In addition, a built-in 180Hz crossover splits low and mid frequency signal between the left and right channel. This is ideal for driving sub-woofers. The GX3 is a feature packed, lightweight amplifier that's suitable for mid-size venue installation, musicians, mobile DJs, etc.

XLR, 1/4" Phone and RCA Inputs
The rear panel features balanced XLR and 1/4" phone inputs, as well as unbalanced RCA phono inputs for complete compatibility with professional and consumer audio gear.
Flexible Outputs
The outputs feature speaker binding posts and Speakon® connections. Detented gain controls provide precise level settings.
QSC GuardRail Protection
QSC's GuardRail protection delivers full peak power while preventing detrimental overloads due to excessive clipping or overheating.
Built-In Crossover
A built-in 180Hz crossover splits low and mid frequency signal between the left and right channel.
Power Rating 8 ohms / 1 kHz (both channels driven): 300W
8 ohms / 1 kHz (single channels driven): 350W
4 ohms / 1 kHz (both channels driven): 425W
4 ohms / 1 kHz (single channels driven): 500W
Damping Factor Not Specified By Manufacturer
Input Sensitivity 1.2 Vrms
Input Impedance Greater than 20k (balanced)
Gain 32.2dB
Frequency Response 20Hz - 20kHz, +0, -1 dB
Signal-to-Noise Ratio 100dB
Total Harmonic Distortion (THD) 8 ohms: less than 0.05%
4 ohms: less than 0.1%
Input Connections 3-pin XLR and 1/4" TRS, balanced, parallel
Phono, unbalanced
Output Connectors Speakon, 1/4", Binding Posts
Controls Front Panel Gain controls, 21 detents
Red Clip LEDs, proportional, 0.1% THD threshold
Green Signal LEDs, threshold -35 dB
Blue Power LED, AC on
Controls (Rear) Full Range / Crossover switch
100 Hz, 3rd order LP (sub), 2nd order HP (top)
Indicators Red Clip LEDs, proportional, 0.1% THD threshold
Green Signal LEDs, threshold -35 dB
Blue Power LED, AC on
Cooling Not Specified By Manufacturer
Power Consumption 0.2 AC Amps, 44 per hour idle
UL, CE, RoHS/WEEE Compliant
Power Requirements 1/8 power, pink noise at 4 ohms, 120V 6.3A
Dimensions (WxHxD) 19 x 3.5 10.1" (483 x 89 x 257mm)
Weight 26 lbs (12 kg)
Specialties Subwoofer/Satellite crossover built-in
QSC GX3 300 Watt 8 Ohm Power Amplifier
  • 3-Year Warranty
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