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QSC GX3 300 Watt 8 Ohm Power Amplifier

B&H # QSGX3 Mfr # GX3
In Stock
Free Expedited Shipping
You Pay: $299.99
Product Highlights
  • Optimized for 4 and 8 ohm Speakers
  • XLR, 1/4" TRS and Phono Inputs
  • Speakon® Combo Outputs
  • Subwoofer/Satellite Crossover Built-in

The QSC GSX GX3 Power Amplifier is designed to provide power, portability and professional sound quality at an affordable price. The GX3 features 300 watts of power at 8 ohms (both channels driven) in a design that's easy to install and delivers flexible features. The rear panel features balanced XLR and 1/4" phone inputs, as well as unbalanced RCA phono inputs for complete compatibility with professional and consumer audio gear.

The outputs feature speaker binding posts and Speakon® connections. Detented gain controls provide precise level settings. QSC's GuardRail protection delivers full peak power while preventing detrimental overloads due to excessive clipping or overheating. In addition, a built-in 180Hz crossover splits low and mid frequency signal between the left and right channel. This is ideal for driving sub-woofers. The GX3 is a feature packed, lightweight amplifier that's suitable for mid-size venue installation, musicians, mobile DJs, etc.

XLR, 1/4" Phone and RCA Inputs
The rear panel features balanced XLR and 1/4" phone inputs, as well as unbalanced RCA phono inputs for complete compatibility with professional and consumer audio gear.
Flexible Outputs
The outputs feature speaker binding posts and Speakon® connections. Detented gain controls provide precise level settings.
QSC GuardRail Protection
QSC's GuardRail protection delivers full peak power while preventing detrimental overloads due to excessive clipping or overheating.
Built-In Crossover
A built-in 180Hz crossover splits low and mid frequency signal between the left and right channel.
Power Rating 8 ohms / 1 kHz (both channels driven): 300W
8 ohms / 1 kHz (single channels driven): 350W
4 ohms / 1 kHz (both channels driven): 425W
4 ohms / 1 kHz (single channels driven): 500W
Damping Factor Not Specified By Manufacturer
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, parallel
Phono, unbalanced
Output Connectors Speakon, 1/4", Binding Posts
Controls Front Panel Gain controls, 21 detents
Red Clip LEDs, proportional, 0.1% THD threshold
Green Signal LEDs, threshold -35 dB
Blue Power LED, AC on
Controls (Rear) Full Range / Crossover switch
100 Hz, 3rd order LP (sub), 2nd order HP (top)
Indicators Red Clip LEDs, proportional, 0.1% THD threshold
Green Signal LEDs, threshold -35 dB
Blue Power LED, AC on
Cooling Not Specified By Manufacturer
Power Consumption 0.2 AC Amps, 44 per hour idle
UL, 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
QSC GX3 300 Watt 8 Ohm Power Amplifier
  • 3-Year Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    QSCGX3 300 Watt 8 Ohm Power Amplifier
     
    5.0

    (based on 4 reviews)

    Ratings Distribution

    • 5 Stars

       

      (4)

    • 4 Stars

       

      (0)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    100%

    of respondents would recommend this to a friend.

    Pros

    • Easy to use (4)
    • Excellent sound (4)
    • Good power output (4)

    Cons

      Best Uses

          • Reviewer Profile:
          • Experienced (4)

        Reviewed by 4 customers

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        Displaying reviews 1-4

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        (1 of 1 customers found this review helpful)

         
        5.0

        Solid Amp

        By Ryan the Media Guy

        from New Jersey

        About Me Experienced

        Verified Buyer

        Pros

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

        Cons

          Best Uses

          • Events
          • Home Studio

          Comments about QSC GX3 300 Watt 8 Ohm Power Amplifier:

          Quiet
          Powerful
          Installation sound
          Any sound amp needs

          Share this review

           
          5.0

          Great Buy

          By Cameraguy

          from Vicksburg, MS

          About Me Experienced

          Verified Buyer

          Pros

          • Easy To Use
          • Excellent Sound
          • Powerful

          Cons

            Best Uses

            • Events
            • Home Studio
            • Performances

            Comments about QSC GX3 300 Watt 8 Ohm Power Amplifier:

            Purchased for high school football stadium PA system. Works great.

            Share this review

             
            5.0

            Great Sound at a good price

            By Joe

            from Fortuna, CA

            About Me Experienced

            Verified Buyer

            Pros

            • Easy To Use
            • Excellent Sound
            • Powerful

            Cons

              Best Uses

              • Church sound system

              Comments about QSC GX3 300 Watt 8 Ohm Power Amplifier:

              I just put two GX3 power amps in service for my church. They sound great and have plenty of power for the sanctuary mains and platform monitors. They are a good value.

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              (1 of 2 customers found this review helpful)

               
              5.0

              Great little amp more than worth the pr

              By None

              from Chester, PA

              About Me Experienced

              Verified Buyer

              Pros

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

              Cons

              • None for our specific use

              Best Uses

              • I am sure that they have

              Comments about QSC GX3 300 Watt 8 Ohm Power Amplifier:

              This is the second GX3 we have purchased. We use them for stage monitor mixes in our church. We are well pleased with their performance. Would recommend them to any one for this purpose.

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