QSC GX7 Power Amplifier


Lightweight, professional power amplifier, 2 channels, 725 watts/ch at 8Ω, 1000 watts/ch at 4Ω.


About this item



Power levels matched to the most popular speakers. Inputs: XLR, 1/4″ TRS, and phono. Outputs: Speakon® combo and binding posts.

QSC GX7 Power Amplifier Features

  • 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

* 230V 16.5 lb (7.5 kg)


Output power per channel
8Ω continous, both channels driven300 W500 W725 W
4Ω continous, both channels driven425 W700 W1000 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 Sensitivity1.2 V rms
Voltage Gain32.2 dB34.4 dB36.1 dB
Output CircuitryClass B2-tier Class H2-tier Class H
Power Requirements (1/8 power, pink noise at 4 ohms, 120V)6.3 A6 A10.1 A
Frequency Response20 Hz–20 kHz, +0, -1 dB
Dynamic Headroom (4 ohms)2 dB
Input ImpedanceGreater than 20 kΩ (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 ProtectionShort circuit, open circuit, thermal, RF protection
Load protected against DC faults
Front Panel Controls and IndicatorsGain controls, 21 detents
Red CLIP LEDs, proportional, 0.1% THD threshold
Green SIGNAL LEDs, threshold 35 dB below clipping
Rear Panel ControlsFull Range / Crossover switch
100 Hz, 3rd order LP (sub), 2nd order HP (top)
Product Dimensions (H×W×D)89 × 483 × 257 mm
3.5 × 19 × 10.1 in
Carton Dimensions (H×W×D)610 × 380 × 153 mm
24 × 15 × 6 in
Net Weight12.1 kg / 27 lb12.6 kg / 28 lb120V model:  7 kg / 15.5 lb
230V model:  7.5 kg / 16.5 lb
Shipping Weight13.2 kg / 29.1 lb14.5 kg / 32 lb120V model:  9.3 kg / 20.5 lb
230V model:  9.75 kg / 21.5 lb
Agency ApprovalsUL, CE, RoHS/WEEE Compliant
AC Current and Heating, 120 VAC
(multiply current by 0.5 for 230 VAC)
Operating ConditionAC ampsBTU/hourAC ampsBTU/hourAC ampsBTU/hour
8 + 8 ohms, 1/8 power 14.19043.37346.71169
8 + 8 ohms, 1/3 power 26.111608.5145613.31807
8 + 8 ohms, full power 39.75110916.2189126.52167
4 + 4 ohms, 1/8 power 16.315155.8116010.11963
4 + 4 ohms, 1/3 power 29.4210511.2216218.52612
4 + 4 ohms, full power 315.0229724.53754404478


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