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Push Your Passive Speakers

Buying Guide: QSC Power Amplifiers

QSC offers a wide range of power amps -- from the affordable GX series, to the DSP-packed PLD series. Follow our buying guide to pick the perfect amp to power your passive PA system.

When you're choosing a power amp, the most important spec is its power output, measured in watts. To get the most of of your PA system, look at your loudspeakers' power ratings and impedance ratings. Pick an amplifier that can deliver about twice the wattage capacity of your speakers. Single-woofer loudspeakers typically have an impedance of 8 ohms. Dual-woofer loudspeakers have half the impedance of single-woofer models, and power ratings two times that of the single-woofer model.

To compare wattages/ohm resistance ratings, click the amp you're interested in and check out the "Specs" tab on the product's page.
PLX2 Series: Clean Audio for Pro Applications
The second generation of QSC's hit PLX series, PLX2 amplifiers provide an abundance of clean, undistorted output. To reduce crossover distortion, these amplifiers make precise modifications in response to temperature changes. In plain English, that means cleaner, more consistent sound -- no matter how hard you drive these amps. Compared to large, heavy AC transformers that provide 60 pulses per second, QSC's efficient, lightweight PowerLight supply delivers 100,000 pulses per second. These additional pulses assure your power supply doesn't drop -- so bass frequencies stay full while the highs remain crisp and clean.

QSC's PLX "02" models can drive up to four loudspeakers from each of two channels, with rear-panel switches for top, subwoofer, or full-range output. These amps are also ideal for extremely high-power bridge mono applications, with front-panel lights to indicate bridged mode operation. The higher-output models use QSC-exclusive Class H circuitry to increase power without affecting audio quality.
QSC PLX1802 Lightweight Power Amplifier
or 8 payments of $112.50
Free 2-Day Shipping
QSC PLX2502 Lightweight Power Amplifier
or 8 payments of $118.75
Free Ground Shipping Free Ground Shipping
QSC PLX3102 Lightweight Power Amplifier
or 12 payments of $88.34
Free Ground Shipping Free Ground Shipping
QSC PLX3602 Lightweight Power Amplifier
Used
$1,284.00
Save 26%
or 12 payments of $116.67
Free Ground Shipping Free Ground Shipping
GX and GXD Series: Easy to Use, Great Value
Easy to use and reliable, QSC GX series amplifiers provide a straightforward solution for clean and portable power on a budget. These amps add the PowerLight supply to a Class H output section, giving them an excellent power-to-weight ratio. The GX series includes GuardRail limiting, which reduces gain during continuous clipping or overheating, protecting your speakers and preventing high distortion or shutdowns. GX series amps are available in lower wattages -- so they're a great fit for smaller PA systems that need reliable QSC power.

QSC's GXD power amps add higher wattage and powerful, easy-to-use built-in DSP, so you can set up and tune your PA system without an outboard loudspeaker processor. You have high-pass and low-pass filters, 4-band parametric EQ, delay up to 50 ms, and peak limiting -- all controllable from the front LCD screen. GXD amps let you customize, store and recall 20 presets for just about any application.
QSC GX3 Power Amplifier (300 Watts)
or 6 payments of $50.00
Free 2-Day Shipping
QSC GX5 Power Amplifier (500 Watts)
or 6 payments of $66.67
Free 2-Day Shipping
QSC GX7 Power Amplifier (1000 Watts)
or 8 payments of $74.88
Free 2-Day Shipping
QSC GXD 8 Class D Power Amplifier with DSP
Used
$704.95
Save 29%
or 8 payments of $100.00
Free 2-Day Shipping
RMXa Series: An Update on a Live Sound Staple
Following in the footsteps of QSC's long-running RMX series, RMXa amplifiers offer rugged construction and clean, consistent power thanks to their high-current toroidal transformers and huge filter capacitance. QSC RMXa series amps keep your signal consistent by removing high-level transients, delivering low distortion and a flat frequency response. They're also available in a variety of wattages, so there's an RMXa amp for every size venue.

The outputs on each RMXa amp are directly mounted to the heat sink for improved thermal coupling and cooling. A full complementary output circuit using the highest-grade linear output devices delivers ultra-low distortion.
QSC RMX 850a Power Amplifier
or 6 payments of $66.67
Free 2-Day Shipping
QSC RMX 1450a Power Amplifier
or 6 payments of $88.34
Free 2-Day Shipping
QSC RMX 2450a Power Amplifier
or 8 payments of $93.75
Free 2-Day Shipping
 

 
QSC RMX 4050a Power Amplifier
or 12 payments of $125.00
Free 2-Day Shipping
QSC RMX 5050a Power Amplifier
Used
$1,119.00
Save 37%
or 12 payments of $141.67
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PLD Series: Powerful DSP Tools to Streamline Your Rig
QSC's PLD series amps do more than just power your speakers -- they provide cutting-edge DSP tools to tune your PA system, eliminating the need for outboard loudspeaker processors. Each PLD series amp can drive up to four channels, powering most any speaker configuration. Call up one of 20 factory presets from the Preset Wizard, then tweak and save your own settings for parametric EQ, alignment delay, crossover, and limiting with the amp's user-friendly interface and LCD screen.

There's a benefit to having all your PA system processing on board the power amplifier: the DSP can monitor and respond to the amplifier's behavior, making dynamics processing more accurate and effective on both RMS and peak limiting. The result is an exceptionally powerful, flexible, and efficient amplifier that's still light in weight.
QSC PLD4.3 Power Amplifier, 4-Channel (3000 Watts)
or 12 payments of $125.00
Free Ground Shipping Free Ground Shipping
 
Powerlight 3 Series: High Power, High Efficiency
With a plug-to-plug efficiency of 85%, and power rating of up to 8,000 watts bridged, Powerlight amps pack plenty of volume in a smart package that doesn't burden AC outlets. These all-analog amps are also digitally fluent -- their QSC Dataport makes them fully compatible with digital processing and QSC software to give you greater control over your sound system.

All Powerlight 3 amplifiers come in the same chassis size for an easy setup on a rack system. They're also designed to allow front-to-back airflow that doesn't pump hot air into your rack and keeps the amps running at average power for longer periods than comparable competitors' amps.
QSC PL325 Powerlight 3 Series Power Amplifier
or 12 payments of $114.75
Free 2-Day Shipping
QSC PL340 Powerlight 3 Series Power Amplifier
or 12 payments of $145.84
Free 2-Day Shipping
QSC PL380 Powerlight 3 Series Power Amplifier
Used
$2,039.00
Save 21%
or 12 payments of $216.67
Free 2-Day Shipping
 
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Need it now but short of cash? All we need is the first payment up front and the rest in easy monthly payments!

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When you checkout, just click the Play as you Pay checkbox to indicate which installment plan you wish to use.

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