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Power levels matched to the most popular speakers used by entertainers
Optimized for maximum real-world headroom into 4- and 8-ohm speaker systems
Inputs: XLR, 1/4-inch TRS and phono input connectors for compatibility with any source
Outputs: Speakon� combo accepts 1/4-inch (TS) plugs or Speakon 2- and 4-pole plugs (connects 2 poles only). Binding posts support all other speaker wiring systems
Minimum depth chassis (10.1-inch / 257 mm) fits in compact, inexpensive effects racks
Lightweight - GX3 and GX5 less than 26 lb (12.5 kg). GX7 only 15.5 lb (7 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

QSC GX3 850w Stereo Amplifier

  • Output Power Per Channel
    - 8 ohms / 1 kHz (both channels driven)    300 W    
    - 8 ohms / 1 kHz (single channel driven)    350 W    
    - 4 ohms / 1 kHz (both channels driven)    425 W    
    - 4 ohms / 1 kHz (single channel driven)    500 W

    Distortion (1 dB below rated power, 1 kHz)    
    - 8 ohms: less than 0.02%
    - 4 ohms: less than 0.05%

    Signal to Noise (20 Hz - 20 kHz)    100 dB

    Input Sensitivity    1.2 V rms

    Voltage Gain    32.2 dB

    Output Circuitry    Class B

    Power Requirements (1/8 power, pink noise at 4 ohms, 120V)    6.3 A

    Frequency Response    20 Hz�20 kHz, +0, -1 dB

    Dynamic Headroom (4 ohms)    2 dB

    Input Impedance    Greater than 20 k? (balanced)

    Maximum Input Level    +24 dBu (16 V rms)

    Input Connectors (each channel)    3-pin XLR and 1/4-inch TRS, balanced, parallel, Phono, unbalanced

    Output Connectors (each channel)    Speakon�, 1/4-inch, 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 below clipping, Blue POWER LED, AC on

    Rear Panel Controls    Full Range / Crossover switch 100 Hz, 3rd order LP (sub), 2nd order HP (top)

    Product Dimensions (H�W�D)    89 � 483 � 257 mm

    Carton Dimensions (H�W�D)    610 � 380 � 153 mm

    Net Weight    12.1 kg 

    Shipping Weight    13.2 kg

    Agency Approvals    UL, CE, RoHS/WEEE Compliant

  • This item is typically in stock with our supplier and ships within 1-5 Days, though product lead times may vary.

    Please contact us prior to ordering to confirm Availability

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