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QSC

collapse expand iconDescription

Lightweight, powerful and affordable are the chief defining characteristics of the QSC GXD series amplifiers. The GXD 4 is sure to become a favorite with bands, DJs and sound reinforcement professionals of all kinds.
Open Box QSC GXD 4 Professional Power Amplifier Level 1
Open Box QSC GXD 4 Professional Power Amplifier Level 1
Open Box QSC GXD 4 Professional Power Amplifier Level 1

collapse expand iconFeatures

  • High peak output power with up to 1600 watts from the GXD 4 and a whopping 4500 Watts from the GXD 8.
  • Power levels matched to the most popular loudspeakers and optimized for maximum real-world headroom into 4 and 8 Ohm speaker systems.
  • Class D output stage with a universal power supply for high performance and efficiency.
  • Extensive and powerful loudspeaker processing built in. Includes high and low-pass filters, 4-band parameteric EQ, limiting, and delay.
  • Large LCD display simplifies amplifier setup and indicates amp status.
  • Inputs: Parallel XLR and 1/4 TRS connectors for compatibility with any source while providing convenient loop-thru capability.
  • Precision rotary encoders for gain and DSP parameter control.
  • Outputs: Professional binding post and NL4 connectors (compatible with NL2) provide for mono and bi-amp speaker connections.
  • Digital limiting automatically protects the amplifier from damage due to temperature rise or overdrive.
  • Adjustable speaker protection to match your loudspeaker' power and impedance.
  • Front panel LEDs indicate signal presence, input overload, and amplifier clipping.

collapse expand iconSpecs

  • 8 Ohms dynamic, both channels driven: 600 watts
  • 4 Ohms dynamic, both channels driven:: 800 watts
  • 8 Ohms continuous, both channels driven: 400 watts
  • 4 Ohms continuous, both channels driven: 600 watts
  • Distortion (typical)
  • 1 kHz at full rated power: < 1% THD:
  • Signal to Noise (A weighted, 20 Hz“20 kHz): 100 dB
  • Input Sensitivity: 1.2 Vrms
  • Maximum Voltage Gain: 33.5 dB
  • Output Circuitry: Class D
  • Power Requirements: 1/8 power at 4Î
  • - 100 V AC: 3.4 A
  • - 120 V AC: 2.9 A
  • - 230 V AC: 1.6 A
  • Frequency Response (20 Hz“20 kHz): +0.7 dB, -0.8 dB
  • Dynamic Headroom (4 Ohms): 1.25 dB
  • Damping Factor (8 Ohms): 100
  • Input Impedance: 20 kÎ (balanced), 10 k Ohms (unbalanced)
  • Maximum Input Level: +23.5 dBu
  • Input Connectors (each channel): 3-pin XLR/F / 1/4" TRS, balanced
  • Output Connectors (each channel): NL4, binding posts
  • NL4 pinout:
  • Channel A on 1+, 1-; Channel B on 2+, 2-
  • Channel B on 1+, 1-
  • Amplifier and Load Protection: Short circuit, open circuit, thermal, RF protection
  • Load protected against DC faults
  • Front Panel Controls and Indicators: 2 — Rotary Encoders
  • 3 — Operational buttons (HOME, ENTER, EXIT)
  • 2 — Green Signal LEDs indicate signal presence
  • 2 — Red A/D Clip LEDs indicate input over-drive and/or amplifier current clipping
  • Blue Power LED ring indicates AC on
  • 2.12" — 1.0", 256 — 128 pixel LCD
  • DSP Functions: High-pass filter, 4th-order Linkwitz-Riley, adjustable frequency 20 Hz to 4 kHz
  • Low-pass filter, 4th-order Linkwitz-Riley, adjustable frequency 60 Hz to 4 kHz
  • 4-band parametric EQ with variable frequency, gain, and bandwidth
  • Peak limiter with power, aggressiveness, and impedance selection
  • Delay 50 msec max.
  • Dimensions (HWD): 3.5" (2 RU) — 19" — 10.2" (89 mm — 483 mm — 259 mm)
  • Weight (Net): 11.3 lb (5.1 kg)
  • Weight - Shipping: 15.4 lb (7.0 kg)
  • Agency Approvals: UL, CE, RoHS/WEEE compliant
  • Carton and Contents: Power cable and quick start guide

Featured Articles

collapse expand iconReviews

2.8

5 Reviews

50%

of respondents would recommend this to a friend

Very Disappointed. Not by QSC but by…..
Very Disappointed. Not by QSC but by…..
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Reviewed by 5 customers

  • Very Disappointed. Not by QSC but by…..

    1

    submitteda month ago

    byJav

    fromMedford, OR

    Bought QSC GXD4 Memorial Weekend used but supposedly good condition according to the website (see pics). I plugged it in (I own GXD8 so easy swap) & after powering on, red clip lights/Failure status come on. No good. How this passed to sell to begin with is on Guitar Center.

  • Not good

    1

    submitted9 years ago

    byBoss

    fromSydney, Australia

    We installed this amplifier last may 2015 for our front of the house array speaker. Now it doesn't work anymore it shows Failure, status: Shutdown

  • Does not last long

    2

    submitted9 years ago

    byBoss Quintine

    fromaustralia

    We use this amplifier as a main house speaker. Installed last may 2015. Now it does not work anymore, it shows Failure and status: shutdown

  • Love QSC

    5

    Verified BuyerVerified Buyer

    submitted9 years ago

    byGeorge

    fromChicago

    I always loved QSC quality and performance. This amps are outstanding. Well built, great interface. They are also small, and not to havy which is always good for a large rack.

  • I want another one.

    5

    Verified BuyerVerified Buyer

    submitted9 years ago

    byGeorge

    fromChicago

    I like this amps so much I want another one.

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