Maximum performance and portability with very flexible I/O.

The QSC GX5 Stereo Power Amplifier is ideal for professional entertainers who require maximum performance and portability on a limited budget. QSC designers, headed by Pat Quilter, have optimized output and appearance of the rackmountable GX5 while reducing raw material cost and weight. The GX5 power amplifier provides full performance for 500 watt (Program) speakers and supplies maximum possible power to 4 ohm and 8 ohm loads. Owners of popular 4 ohm loudspeakers (dual-woofer, two-way models and many subwoofers) will find the 700 watt (4 ohm) power of the GX5 an ideal match.

The GX5 power amp uses a Class H system, based on key elements of the PLX Series, almost doubling power in the same size and weight. QSC design expertise allows the output devices to shift from low-power to high-power rails in less than a millionth of a second, ensuring that the output power is always right where it needs to be without excess loss.

QSC GX5 Stereo Power Amplifier Features:

• Power levels matched to the most popular speakers used by entertainers
• Optimized for maximum real-world headroom into 4 and 8 speaker systems
• Inputs: XLR, 1/4" TRS and phono input connectors for compatibility with any source
• Outputs: Speakon® combo accepts, 1/4" (TS) plugs or Speakon 2-pole and 4-pole plugs (connects 2 poles only). Binding posts support all other speaker wiring systems.
• Minimum depth chassis (10.1"/257 mm) fits in compact, inexpensive effects racks
• Lightweight — less than 26 lbs (12.5 kg)
• Detented gain controls for precise setting and matching of sensitivity
• GuardRail™ automatically protects the amplifier and loudspeakers from damage due to temperature rise or overdrive without shutting down the show
• Front panel LEDs monitor Power, Signal and Clipping
• Subwoofer/Satellite crossover built-in

Order today and enjoy legendary QSC quality and reliability.

QSC GX5 Stereo Power Amplifier Specifications:

• Power rating:
• 8 / both channels driven / 1 kHz: 500 W
• 8 / single channel driven / 1 kHz; 600 W
• 4 / both channels driven / 1 kHz; 700 W
• 4 / single channel driven / 1 kHz; 850 W
• 2 / both channels driven / 1 kHz: 350 W
  
  Distortion (typical): 20 Hz - 20 kHz: 1 dB below rated power 8 : less than 0.05% / 4 : less than 0.1%
• Signal to Noise: (20 Hz - 20 kHz) 100 dB
• Input Sensitivity: 1.2 Vrms
• Voltage Gain (8 ): 34.4 dB
• Output Circuitry: 2-tier Class H
• Power Requirements (1/8 power, pink noise at 4 , 120 V):6A
• Frequency Response: 20 Hz - 20 kHz, +0, 1 dB
• Dynamic Headroom (4 ): 2 dB
• Damping Factor: 100
• Input Impedance ( ): Greater than 20k (balanced)
• Maximum Input Level: +24 dB (16 Vrms)
• Input Connectors (each channel): 3-pin XLR and 1/4" TRS, balanced, parallel Phono, unbalanced
• Output Connectors (each channel) Speakon®, 1/4", Binding Posts
• Amplifier and Load Protection: Short circuit, open circuit, thermal, RF protection
• Load protected against DC faults
• Front Panel Controls and Indicators: Gain controls, 21 detents
• Red Clip LEDs, proportional, 0.1% THD threshold
• Green Signal LEDs, threshold -35 dB
• Blue Power LED, AC on
• Rear Panel Controls: Full Range / Crossover switch
• 100 Hz, 3rd order LP (sub), 2nd order HP (top)
• Dimensions (HWD): 3.5" (2RU) x 19" x 10.1" (89 mm x 483 mm x 257 mm)
• Weight Shipping / Net: 31 (14 kg) / 26 lbs (12 kg)
• Agency Approvals: UL, CE, RoHS/WEEE compliant

QSC GX5 Stereo Power Amplifier

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Average of 10 User Ratings

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Packs a Punch

Posted by futurerocker77 on Sep 23, 2009

Experience w/product: I own it

Reviewer's Background: Playing in two bands

Reviewer's Play Style: rock, alternative

I got this thing about a month ago. It has not let me down. The bands that I'm in love to play head-banging rock, not metal though. Anyone who plays this knows that a crash cymbal is essential. All I can say is that the crash has no chance. I use this with a Kustom monitor and a Behringer mixer. Together, it's a great PA system. When all the knobs are at about 70% full, it basically shakes the house(we practice in my basement, and the neighbors, about 150 feet away can hear us). It is also moderately cheap, so if you're on a loose budget, get this now. You will not regret it.

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Absolutely Fantastic!!

Posted by TeamAlpha from Arlington, VA on Jul 28, 2009

Experience w/product: I own it

Reviewer's Background: Gigging Musician

Reviewer's Play Style: Death Metal, Black Metal, Hard Rock

This was my first time ever putting a sound system together. My band's original Phonic Powerpod was dying, so it was time for an upgrade. I was completely new to the power amp area, but I was recommended this amp by a guy at my local Guitar Center. First off, the thing is built like a tank. Little on the heavy side, but not too bad. And for the power you get, it's worth every pound. Man does this thing push!! We're using it to run 2 Peavey Pr-15s (400W handling, 600W peak) and the thing absolutely kills!! We ran it for a good hour at a pretty high volume, and it was completely cool to the touch. This amp has made me a loyal QSC customer. Highly recommended!

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All you need

Posted by Boogie from Iowa on Jun 30, 2009

Experience w/product: I own it

Reviewer's Background: Active Musician

Reviewer's Play Style: Rock

We have 2 of these for our PA system. 1 drives the S115V Yamaha's (2 inside and 4 outside) and 1 drives our EAW bass bins. Great clean sounds with plenty of headroom. No problem with them overheating even after 6 hours of constant use. They are perfectly sized for our needs and love the fact that they weigh about half of our monitor amp (RMX850). Bottom line is this is a great amp for a awesome price, you cannot go wrong with it!

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This GX 5 is by far the best amp for...

Posted by Christain Bear from Moore Chapel, Arkansas on Jan 7, 2009

Experience w/product: I own it

Reviewer's Background: Sound person in Small Church

Reviewer's Play Style: Christian

This GX 5 is by far the best amp for the money. I have 2 at the church where I am the sound man. I got one and liked it so well that I have purchased another one for outside speakers! Try it. I had a Nady Power Amp and having a lot of trouble with feed back, but not with the GX 5

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QSC GX5

Posted by Pinkzebraproductions from California on Aug 9, 2008

Experience w/product: I own it

Reviewer's Background: Traveling Musician and Sound Engineer

Reviewer's Play Style: All types of music

This power amp has travelled with me through half the country, with some pretty inconsiderate roadies, and run 6 hours a day every day with everything from folk rock to death metal. Never had a single problem. EVER.

It usually runs a pair of JBL JRX125 Dual 15" speakers and always provides clear consistent sound. The only reason I gave it 4.5 on features instead of 5 is because you do not have the "bridged mono" option found on most power amps. For a sound engineer that needs to be very flexible, this may be a problem. Still, it is flexible enough with the built in crossover!

Great job QSC! I will be buying another to power dedicated subwoofers soon!

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QSC GX5 Stereo Power Amplifier

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