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GX Series Overview

QSC

collapse expand iconDescription

The QSC GX5 Stereo Power Amplifier, a robust yet lightweight amp ideal for live sound reinforcement and fixed installations. This innovative amplifier packs a punch, delivering a combined 1,250 watts at 8 ohms across two channels, allowing you to drive multiple speakers with pristine audio. With its highly efficient Class-D technology, the GX5 runs cool while providing more than enough power for small- to mid-sized venues. Intuitive rear-panel controls make dialing in your perfect tone a breeze.

Class-D Amplification Means Powerful, Efficient Performance

The GX5 harnesses QSC's advanced Class-D amplifier technology to produce high power levels from an ultra-lightweight, fanless design. Each channel cranks out 625 watts at 8 ohms, for a total of 1,250 watts. This Class-D efficiency also results in an amplifier that stays cool during extended use, thanks to its built-in heat sinks. The GX5's lightweight, compact form factor makes transporting and mounting the amp for live shows or permanent installations simple.

Flexible Connectivity for Any Application

The GX5 offers versatile connectivity for driving a variety of speaker configurations in live or installed settings. Each channel provides an XLR, 1/4" and barrier strip input, as well as binding post outputs to connect multiple speakers. The rear panel also sports an RJ45 Ethernet port for remote monitoring and control via QSC's Q-Sys platform. With a host of input and output options, the GX5 works seamlessly in any audio environment.

Intuitive Interface For Quick Set Up

Getting great sound from the GX5 is made easy thanks to its straightforward rear-panel controls. Each channel features independent gain knobs to dial in the optimal level for your inputs. LED meters provide visual feedback for setting gain levels. The rear panel also includes a ground lift switch and master level control for the main outputs. With an interface designed for plug-and-play operation, the GX5 lets you focus on your performance instead of wrestling with overly complex controls.

Rugged Reliability For Demanding Applications

As with all QSC products, the GX5 is built to handle the most demanding live sound and installation needs. Its steel chassis and aluminum faceplate are durable yet lightweight. Advanced protection circuits guard against short circuits, DC faults, overheating, and overload. With a 3-year warranty and a reputation for rock-solid reliability, the GX5 delivers power you can depend on for any application.

Open Box QSC GX5 Stereo Power Amplifier Level 1
Open Box QSC GX5 Stereo Power Amplifier Level 1
Open Box QSC GX5 Stereo Power Amplifier Level 1

collapse expand iconFeatures

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

collapse expand iconSpecs

Power rating
  • 8 ohm / both channels driven / 1kHz: 500W
  • 8 ohm / single channel driven / 1kHz; 600W
  • 4 ohm / both channels driven / 1kHz; 700W
  • 4 ohm / single channel driven / 1kHz; 850W
  • 2 ohm / both channels driven / 1kHz: 350W
  • Distortion (typical): 20Hz–20kHz: 1dB below rated power 8 ohm: less than 0.05% / 4 ohm: less than 0.1%
  • Signal to Noise: (20H–20kHz) 100dB
  • Input Sensitivity: 1.2 Vrms
  • Voltage Gain (8 ohm): 34.4dB
  • Output Circuitry: 2-tier Class H
  • Power Requirements (1/8 power, pink noise at 4 ohm, 120V):6A
  • Frequency Response: 20 Hz–20kHz, +0, 1dB
  • Dynamic Headroom (4 ohm): 2dB
  • Damping Factor: 100
  • Input Impedance (ohm): Greater than 20k (balanced)
  • Maximum Input Level: +24dB (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 -35dB
  • Blue Power LED, AC on
  • Rear Panel Controls: Full Range / Crossover switch
  • 100 Hz, 3rd order LP (sub), 2nd order HP (top)
  • Dimensions (HxWxD): 3.5" (2RU) x 19" x 10.1" (89 mm x 483 mm x 257 mm)
  • Weight Shipping/Net: 31 (14kg)/26 lb. (12 kg)
  • Agency Approvals: UL, CE, RoHS/WEEE compliant

Featured Articles

collapse expand iconReviews

4.56

27 Reviews

89%

of respondents would recommend this to a friend

Most Liked Positive Review

5

Solid Power in Varying Conditions.

Let me start by saying my GX5 has seen about everything you can imagine in its short 6 week out of the box life. I live in Georgia and the heat and the humidity here are often pushing the heat index to well over 100 degrees. I have done 3 outdoor gigs with this amp pushing a pair of JBL JRX 115's and one JRX 118s and it pushes them beautifully. The built in Crossover is really nice because splitting it out at 100 hz really has helped me push my mids/highs harder to provide enough sound for the outdoor gigs. My GX5 has even been run from a 35 dollar power inverter from a retail giant who shall remain nameless and provided music for a beach party i had the privilage of DJing. This is an all around great amp with very versitile inputs and outputs that make it possible for anyone not playing at 2 ohms or bridging channels to have a great sound at a not so discouraging price. QSC has been great for me thus far and i am just about convinced that there no other power amp company that is worth my time. Thanks QSC

VS

Most Liked Negative Review

2

Very Short Lifespan Before Needed Repairs

I bought this amp in the Winter of 2017. Year and a half later, its introducing humm into my system. It was very difficult to trouble shoot. I caught it finally by changing out amplifiers. I bet the warranty is already gone as well. Class D amps Suck!

Filters
Best Uses
  1. Performances6
  2. Outdoor Events / Games5
  3. Pro Audio / DJ / Mixing4
  4. Home Studio2
  5. Amateur Recording1
Cons
  1. Limited Functions1
  2. Short Life Span1
Describe Yourself
  1. Experienced6
  2. Professional Musician3
Pros
  1. Easy To Use9
  2. Good Power Output9
  3. Excellent Sound8
  4. Portable7
  5. Warm / Comfy2

Reviewed by 27 customers

  • Effective

    4

    submitted3 years ago

    byFred

    fromTexas

    We use this product for church on Sundays and Wednesdays during praise and worship, for announcements, and for bringing the Word to the congregation as well as for children's programs, youth conference, and special events like weddings and funerals and baptisms and dedications.

  • All QSC GX5 Power amps are demo models, not new

    1

    submitted4 years ago

    byKurt S

    fromMidlothian, VA

    Ordered a brand new QSC GX5 and a pair of EVM12L Black Label speakers. Power amp arrived in an open box with no power cord. Was advised to arrange exchange at local GC. That's when I was informed al GX5's in stock are demos. No other QSC power amps in this class are in stock. So, I now have 2 EVM12L Black labels with no power supply. And, these speakers cannot be returned.

  • Excellent power and very quiet pink noise

    5

    submitted6 years ago

    byKelyn

    fromMurray KY

    Has a built in crossover function Can not be bridged

  • Very Short Lifespan Before Needed Repairs

    2

    submitted7 years ago

    byMike

    fromEugene, Oregon

    I bought this amp in the Winter of 2017. Year and a half later, its introducing humm into my system. It was very difficult to trouble shoot. I caught it finally by changing out amplifiers. I bet the warranty is already gone as well. Class D amps Suck!

  • QSC GX5 and Guitar Center on 249 Rocks!

    5

    submitted7 years ago

    byDJ Marc D / Elite Entertainment

    fromHouston, TX

    Just purchased a QSC GX5 power amplifier from Mary (store manager), and Akeyla (sorry if I misspelled). The amp rocks! I have been DJing for several years and Mary explained a lot of technical stuff regarding which amp to buy for my speakers. I actually had a more expensive product in mind, but after her explanation I went with the GX5. That says a lot for her character and integrity. Some folks would have simply sold me the more expensive amp just to make a profit. She helped educate me on the correct product which saved me money AND potentially saved my speakers if I bought the wrong amp. Way to go Mary and Akeyla and God bless!

  • Wonderful QSC quality. Endless volume

    5

    submitted7 years ago

    byFast Eddie

    fromDetroit, MI

    I have this amp pushing a pair of JBL JRX215 speakers. Excellent clarity and punch. I have turned up the volume to a painful level and it hasn't clipped yet. Perfect match in my opinion. I love it.

collapse expand iconQ&A

Have a question about this product? Our expert Gear Advisers have the answers.

  • submitted4 months ago

    asked byphil

    fromnorth bergen nj 07047

    can u hook up a powered sub to this amp?

    can u hook up a powered sub to this amp?

    Open Reply - Gear-Support
    No, you can't.

  • submitted4 years ago

    asked bySnuffy

    fromSherman tx

    How many channels and what kind of wattage

    How many channels and what kind of wattage

    Open Reply - Thomas
    It's 2 channels. 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

  • submitted4 years ago

    asked byDavid

    fromDallas, TX

    Will it hurt the QSC GX5 power amp if you only use one channel?

    Will it hurt the QSC GX5 power amp if you only use one channel?

    Open Reply - Kenneth
    You are able to use only one channel with this power amp