QSC GX 3

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This item runs exclusively on an operating voltage of 230 V and therefore requires a voltage transformer to run in your country of United States.

Power Amplifier

Power: 2x 425 W / 4 Ohm, 2x 350 W / 8 Ohm
Inputs channel 1 and 2: 2x XLR balanced, 2x RCA and 2x 6.3 mm stereo jacks
Outputs: Speaker Twist combo jacks to 6.35 mm jack, 2 x screw terminals
2 Stepped gain controls for precise adjustment
Frequency range: 20 - 20,000 Hz
Signal / noise ratio: 100 dB
Integrated switchable crossover
Guard rail technology
Protects against overheating and overloading without disconnecting
Protective circuits and thermal fuses
Detachable power cable
Very low installation depth and low weight
Dimensions (W x H x D) 483 x 89 x 257 mm
Format: 19" / 2 U
Weight: 12.1 kg

30-Day Money-Back Guarantee

3-Year Thomann Warranty

Available since May 2008

Item number 207500

Sales Unit 1 piece(s)

Power (4 Ohms) per Channel 425 W

Channels 2

Rack Units 2 U

Amp Class Class AB

2 Ohm stable No

DSP/Crossover Yes

Convection cooling No

Width in mm 483 mm

Depth in mm 257 mm

Height in mm 89 mm

Weight 12,1 kg

Temperature controlled fan 1

Input XLR 1

RCA Input 1

Jack Input 6,3 sym. 1

Link Out No

Output Speaker Twist 1

Output Binding Post 1

$359

The shipping costs are calculated on the checkout page.

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in Power Amps

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99 Customer ratings

5 66 Customers 4 28 Customers 3 4 Customers 2 1 Customer 1 0 Customers

4.6 / 5

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53 Reviews

Good installation amp, reliable at a good price

THoward 09.01.2020

We used one of these amps to replace a Crown digital which had failed in a typical digital way and was facing a serious repair bill. It was recommended to us as being a tried and tested amplifier design based on tested technologies to be long lasting, robust and reliable in true QSC fashion. It hasn't disappointed and has been running 24/7/365 for 18 months in that installation now without ever missing a beat.
The fan control keeps it quiet under normal operation. The sonic properties of the amp are well covered by the other reviews here and I agree with them, but in our application ease of installation, cost and long term reliability and repairability were our main interests and the amp performs very well against those needs.

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Really nice low cost amp

Jason7773 27.11.2015

I've used higher end and much more expensive QSC models in the past and had until now tended to use Yamaha P3500/5000 & 7000 for low cost jobs. The first GX model I purchased was a GX5 on a bit of a punt as I've known some very good high end manufacturers really miss the mark producing entry level products. But it did not disappoint, so much so I bought two of these GX3s shortly afterwards to replace some Behringer power amps. Hands down these beat the nearest equivalent Behringer models by a mile and are even slightly better than the Yamaha P series. The sound is very open and clean with very good stereo image for a PA amplifier. In a multi speaker set up with 2xGX3 1xGX5 driving two mains, two fills and two subs I didn't have any problems setting up and noticed no phase issues that appeared amplifier related i.e that couldn't be accounted for by position and acoustics. You can drive these pretty hard and they stay quite linear up to high levels and distort in a tolerable way as you approach the limit of their ability. Many amps I've used in this price range are not so forgiving and run out of steam very sharply. I will be buying more of these in the future.

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QSC quality at a great price

Robert582 15.05.2013

This was used for an install of an A/V system in a school. The systems main speakers needed to be ultra reliable and having used higher spec QSC amps in the past I was extremely happy to find one at this price. The performance (although not quite up there with pro models) was amazing. It was far cleaner and had a more open sound when compared to other models in its price band. Even though it has a relatively low output it maintained a good amount of clean headroom (even when driven fairly hard) and kept a fairly linear tonality. I would definitely use and spec this range of amps again.

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Great amp for small systems

Anonymous 01.09.2016

I use this as a high amp in a 3 way system but it would be plenty of power for a small full range system for house parties and small gigs. Sound quality and power is excellent as you would expect from QSC. i compared this amp to the Behringer iNuke 3000 which claims twice the power and this amp went louder before clipping. Worth the extra money. Only down side is it is very heavy compared to the class d amplifiers but is still fairly compact and fits into an effects rack. Overall I'm very happy with this purchase.

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QSC GX 3

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