QSC GX 3

Power Amplifier

  • Power: 2 x 425 W @ 4 Ohm
  • Inputs: 2 x XLR balanced, 2 x RCA and 2 x 6.3 mm stereo jacks
  • Outputs: Speaker Twist combo jacks to 6.35 mm jack, 2 x screw terminals
  • 2 Gain controls
  • Frequency range: 20 - 20,000 HZ
  • Signal / noise ratio: 100 dB
  • Crossover switchable
  • Detachable power cable
  • Dimensions (W x H x D) 483 x 89 x 257 mm
  • Format: 19" / 2 RU
  • Weight: 12.1 kg

Further information

Channels 2
Rack Units 2 U
2 Ohm stable Yes
DSP/Frequency Yes
Convection cooling No

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4.6 / 5.0
42 written ratings Read all reviews
Total

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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Total

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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You could sum up the whole idea of a PA power amplifier in a single word - sound. The power amp is a crucial part of a musician’s live sound.
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Offers include 20% British VAT and are valid as long as stocks last. Shipping costs to the U.K. are 10 EUR (approx. £7), free shipping on orders above 149 EUR. Please click here for international Shipping Costs and Delivery Times. We do not accept liability for typographical errors or inaccurate information of any kind. *RRP = manufacturer's / distributor's recommended retail price in Germany
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