QSC GX3 300 Watt 8 Ohm Power Amplifier

Model #GX3

Qsc gx3 1
Qsc gx3 1
Qsc gx3 2
Qsc gx3 3
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Specifications

Packaging Info

Package Weight 29.6 lb
Box Dimensions (LxWxH) 24.0 x 14.5 x 6.0"

General Information

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, parallelPhono, unbalanced
Output Connectors Speakon, 1/4", Binding Posts
Power Rating 8 ohms / 1 kHz (both channels driven): 300W8 ohms / 1 kHz (single channels driven): 350W4 ohms / 1 kHz (both channels driven): 425W4 ohms / 1 kHz (single channels driven): 500W
Controls (Rear) Full Range / Crossover switch100 Hz, 3rd order LP (sub), 2nd order HP (top)
Indicators Red Clip LEDs, proportional, 0.1% THD thresholdGreen Signal LEDs, threshold -35 dBBlue Power LED, AC on
Cooling Not Specified By Manufacturer
Power Consumption 0.2 AC Amps, 44 per hour idleUL, 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
Controls Front Panel Gain controls, 21 detentsRed Clip LEDs, proportional, 0.1% THD thresholdGreen Signal LEDs, threshold -35 dBBlue Power LED, AC on
Damping Factor Not Specified By Manufacturer
User Reviews
B h photo.34921152
31 July 2016
10/10

I am a physicist. (energy physics not matter physics). I am also a sound engineer, coincidentally, the control of sound energy. This amp is VERY GOOD for bench testing audio control devices and speakers. The addition of an unbalanced input makes it very handy for typical bench tests.

Crutchfield.32829990
12 January 2015
6.0/10

This amp sounded great, and produced just the kind of power I was looking for. My only issue with it was that the fan is really noisey, if you have a sound proof cabinet you will be fine but if not, this amp will distract you

B h photo.34921152
15 February 2016
8.0/10

Great device, easy setup. Good true sound produced by the amplifier. The only little thing is that if you put out a low volume, you hear the cooling fan running.

B h photo.34921152
15 April 2018
10/10

This amplifier has the power and quality I was looking for.It is also much lighter than the old amplifier that it replaced.

B h photo.34921152
11 January 2017
10/10

I am the facility director at a large health club.... We have used this brand amplifier in our Spinning, Yoga and Aerobics studios... When paired up with a Shure wireless mic and a rolls mixer you will have Great long lasting pro audio

B h photo.34921152
3 February 2015
10/10

Bought this to replace an old amp with a bad channel. Used for overflow speakers in our church lobby ceiling. Inputs and outputs were totally compatible with our system's existing wiring, making it a simple hook-up. It worked perfectly right out of the box.

Audiofanzine.32871410
24 August 2014
8.0/10

Purchased three years ago, I do not regret it. The sound is good, the device compact, rack mountable in 19 'and has a connector adapted to (almost) all possibilities. Only drawback, at a party, it is put repeatedly safe (both channels) while he was on for a short time and at half power.

Audiofanzine.32871410
24 August 2014
8.0/10

Very good amp, many possible connections, compact and in rack 19 '.

B h photo.34921152
25 November 2013
10/10

Quiet Powerful Installation sound Any sound amp needs

Audiofanzine.32871410
13 September 2012
10/10

A small amp in a prestigious brand like QSC is a bit confusing ... considering the price. It is the use that is convenient, robust, compact and delivers a sound that is truly above the norm for this price. Material very well.

Product Highlights
  • Optimized for 4 and 8 ohm Speakers
  • XLR, 1/4" TRS and Phono Inputs
  • Speakon® Combo Outputs
  • Subwoofer/Satellite Crossover Built-in
In The Box
  • QSC GX3 300 Watt 8 Ohm Power Amplifier
  • 3-Year Warranty
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