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QSC GX5 Stereo Power Amplifier 

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The QSC GX5 Stereo Power Amplifier is ideal for professional entertainers who require maximum performance and portability on a limited budget. QSC de...Click To Read More About This Product

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OVERVIEW

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.

FEATURES
  • Power levels matched to the most popular speakers used by entertainers
  • Optimized for maximum real-world headroom into 4Ω and 8Ω 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.

SPECIFICATIONS

GX5 Stereo Power Amplifier

  • Power rating:
    8Ω / both channels driven / 1 kHz: 500 W
    8Ω / single channel driven / 1 kHz; 600 W
    4Ω / both channels driven / 1 kHz; 700 W
    4Ω / single channel driven / 1 kHz; 850 W
    2Ω / both channels driven / 1 kHz: 350 W

    Distortion (typical): 20 Hz - 20 kHz: 1 dB below rated power 8Ω: less than 0.05% / 4Ω: less than 0.1%
    Signal to Noise: (20 Hz - 20 kHz) 100 dB
    Input Sensitivity: 1.2 Vrms
    Voltage Gain (8Ω): 34.4 dB
    Output Circuitry: 2-tier Class H
    Power Requirements (1/8 power, pink noise at 4Ω, 120 V):6A
    Frequency Response: 20 Hz - 20 kHz, +0, 1 dB
    Dynamic Headroom (4Ω): 2 dB
    Damping Factor: 100
    Input Impedance (Ω): 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
Reviews
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Review Snapshot

by PowerReviews
QSCGX5 Stereo Power Amplifier
 
4.6

(based on 31 reviews)

Ratings Distribution

  • 5 Stars

     

    (26)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (2)

100%

of respondents would recommend this to a friend.

Pros

  • Easy to use (9)
  • Excellent sound (9)
  • Good power output (8)
  • Warm / comfy (4)
  • Portable (3)

Cons

No Cons

Best Uses

  • Performances (7)
  • Outdoor events / games (5)
  • Pro audio / DJ / mixing (4)
  • Home studio (3)
    • Reviewer Profile:
    • Experienced (6), Professional musician (3)

Most Liked Positive Review

 

Great bang for the buck

Did exhaustive investigating prior to purchase of this amp. Comparisons from crown to behringer and decided on this. Had it for a year now powering subs and mains in a band playing 4-6...Read complete review

Did exhaustive investigating prior to purchase of this amp. Comparisons from crown to behringer and decided on this. Had it for a year now powering subs and mains in a band playing 4-6 gigs a month in temps from -30 to 100. It has never hiccupped. More powerful than wattage indicates. More clean headroom in the amp than the 70 pound dinosaur it replaced that was rated at three times the power output.

VS

Most Liked Negative Review

 

Great Amp!

Love this amp! I run it less than half way up and its PLENTY loud for the DJ gigs I do... Only thing I don't like is the cooling fans are a little...Read complete review

Love this amp! I run it less than half way up and its PLENTY loud for the DJ gigs I do... Only thing I don't like is the cooling fans are a little loud (not that thats an issue when the musics on though)

Reviewed by 31 customers

Displaying reviews 1-10

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(5 of 5 customers found this review helpful)

 
5.0

Nice Power Amp

By Geoff Wintrup

from california

Comments about QSC GX5 Stereo Power Amplifier:

I just got this amp to replace a crummy Nady one that went bad. It has been excellent so far powering a pair of 15 inch mains and a pair of 12 inch monitors. There are alot of hookup options and plenty of power. I previously bought a Peavey IP3000 and it was a piece of junk. I returned it for the QSC and am really satisfied now. The QSC GX5 is a good choice for a small to mid-sixe PA setup.

(4 of 4 customers found this review helpful)

 
5.0

Great bang for the buck

By UP guitar player

from Way up north

About Me Professional Musician

Pros

  • Easy To Use
  • Excellent Sound
  • Good Warmth
  • Powerful

Cons

    Best Uses

    • Events
    • Mobile DJ
    • Performances

    Comments about QSC GX5 Stereo Power Amplifier:

    Did exhaustive investigating prior to purchase of this amp. Comparisons from crown to behringer and decided on this. Had it for a year now powering subs and mains in a band playing 4-6 gigs a month in temps from -30 to 100. It has never hiccupped. More powerful than wattage indicates. More clean headroom in the amp than the 70 pound dinosaur it replaced that was rated at three times the power output.

    (4 of 4 customers found this review helpful)

     
    5.0

    Great Amp!

    By Jfferrett1

    from toby pa

    See all my reviews

    Comments about QSC GX5 Stereo Power Amplifier:

    For my small PA these are more than adequate. Runnig OAP tops with B&C loaded subs which are all 100db + in sensitivity. The amp never gets hot. I use the CX series in my large scale PA but the GX (although an entry level amp) is very nice. Sound is clean and clear and the GX 5 gets loud enough for most applications. I have 8 in my small system. Manual could be better for those who do not know how to use the basic features of an amp, but it really does not get easier than these basic amps. There are poor reviews from some once in a blue moon, but I believe these people do not have the tech skills to set gain structure at the mixer or amp. Use quality gear in the whole chain and NO ADAPTERS and you will not be disappointed.
    Easy to use and nice x-over feature for an amp of this price from a very reputable mfg. Only wish x-over was adjustable.
    Made like other QSC products...reliable.

    (3 of 3 customers found this review helpful)

     
    5.0

    QSC has a winner!

    By JLNorthGA

    from Peacock Performing Arts Center

    About Me Experienced

    See all my reviews

    Ask me a question

    Pros

    • Easy To Use
    • Excellent Sound
    • Powerful

    Cons

      Best Uses

      • Events
      • Performances

      Comments about QSC GX5 Stereo Power Amplifier:

      We have a pair of QSC RMX 850 amplifiers. When our Carvin amplifier started to go, we knew we had to replace it. We looked at the QSC RMX 850s and saw that the GX5 was the same price.

      Wow! What a difference. The GX5 is so much better and cleaner sounding than our old Carvin. It is also more powerful than the RMX 850 amps.

      This is a main amplifier for our house auditorium sound. It has performed quite well. I like it so much that the RMX 850's will be replaced with a GX5 and a GX7 when we can afford the spare cash.

      (3 of 8 customers found this review helpful)

       
      1.0

      Great Amp!

      By Richard Pitonyak

      from Vermont

      See all my reviews

      Comments about QSC GX5 Stereo Power Amplifier:

      Love this amp! I run it less than half way up and its PLENTY loud for the DJ gigs I do... Only thing I don't like is the cooling fans are a little loud (not that thats an issue when the musics on though)

      (3 of 3 customers found this review helpful)

       
      5.0

      bassman

      By Bill-liHH2

      from Va.

      See all my reviews

      Comments about QSC GX5 Stereo Power Amplifier:

      Bought this amp last year hoping it would power our house speakers with a quality, clear sound and have not felt let down. It plays long and loud w/out clipping or giving any problems. If something should happen to this amp I would buy anther to replace it.

      (2 of 2 customers found this review helpful)

       
      5.0

      Quality Amplifier

      By djmaye

      from Crivitz, WI

      About Me Novice

      Pros

      • Easy To Use
      • Portable
      • Powerful

      Cons

        Best Uses

        • Home Studio
        • Mobile DJ

        Comments about QSC GX5 Stereo Power Amplifier:

        Works perfectly for fully powering my 18" Peavey Black widow sub. Low-pass and high-pass filters built in work as expected and make external, expensive, and bulky crossovers completely unnecessary.

        (2 of 2 customers found this review helpful)

         
        5.0

        Very nice.

        By none

        from Musicians Friend.

        About Me Novice

        See all my reviews

        Verified Buyer

        Pros

        • Easy To Use
        • Excellent Sound
        • Powerful

        Cons

          Best Uses

          • Amateur Recording
          • Home Studio

          Comments about QSC GX5 Stereo Power Amplifier:

          easy to use and sounds great

          (2 of 5 customers found this review helpful)

           
          4.0

          Goofy's Review

          By Goofy's Review

          from Florida

          See all my reviews

          Comments about QSC GX5 Stereo Power Amplifier:

          Have owned this unit for over a year now...picking up what sounds like a grounding problem static hum. Trashed my very low end radioshack eq and bought a behringer and doing much better but still some hum when not playing any music. At a loss at this point but its bearable...Musicians Friend has been a real bud trying to help me work out the problems. will send them another tech support help me please email. Not overmodulating and don't know if its the amp or not at this point.

          (2 of 2 customers found this review helpful)

           
          5.0

          Truly a terrific product

          By Dad Loves Toys

          from Los Angeles

          See all my reviews

          Comments about QSC GX5 Stereo Power Amplifier:

          I'm a loyal QSC user so when I had to buy a couple of amps to go with some new Yamaha speakers I thought I'd give the new, lower cost GX Series a try. I have to be honest, I wasn't expecting anywhere near this level of quality and performance for this kind of money. I'm REALLY happy with this GX5 and the GX3 that I bought and have no reservations at all about recommending them to anybody who doesn't run their system at 2-ohms or bridging(I'm guessing most of the people reading this review). Great price. Terrific performance. No brainer.

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