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Discontinued QSC Live Sound Power Amplifiers

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An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.
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These are the type of input connections that the amplifier has.
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These are the types of output connections that the amplifier has.
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This is the total number of spaces that the preamplifier will occupy when mounted on a rack.

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QSC RMX 1450

1400W, 2 Channel Power Amplifier

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1400W, 2 Channel Power Amplifier

2 Channel Power Amplifier • 1400 Watts • Independent Defeatable Clip Limiters • Barrier Strip, XLR and 1/4" Balanced Inputs • Independent DC and Thermal Overload Protection

2 Channel Power Amplifier • 1400 Watts • Independent Defeatable Clip Limiters • Barrier Strip, XLR and 1/4" Balanced Inputs • Independent DC and Thermal Overload Protection

RMX 1450 small

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Price: $449.99

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC RMX 2450

2400W, 2 Channel Power Amplifier

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2400W, 2 Channel Power Amplifier

2 Channel Power Amplifier • 1400 Watts • Independent Defeatable Clip Limiters • Barrier Strip, XLR and 1/4" Balanced Inputs • Independent DC and Thermal Overload Protection

2 Channel Power Amplifier • 1400 Watts • Independent Defeatable Clip Limiters • Barrier Strip, XLR and 1/4" Balanced Inputs • Independent DC and Thermal Overload Protection

RMX 2450 small

Item added to your cart.

Price: $699.00

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Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC RMX 1850HD

1800W, 2 Channel Power Amplifier

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1800W, 2 Channel Power Amplifier

2 Channel Power Amplifier • 1800 Watts • Independent Defeatable Clip Limiters • Barrier Strip, XLR and 1/4" Balanced Inputs • Independent DC and Thermal Overload Protection

2 Channel Power Amplifier • 1800 Watts • Independent Defeatable Clip Limiters • Barrier Strip, XLR and 1/4" Balanced Inputs • Independent DC and Thermal Overload Protection

RMX 1850HD small

Item added to your cart.

Price: $534.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC RMX 4050HD

4000W, 2 Channel Power Amplifier

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4000W, 2 Channel Power Amplifier

2 Channel Power Amplifier • 4000 Watts • Dual Mono, High Current Power Supply • 3RU Chassis • High-Current Toroidal Transformers • User-Defeatable Clip Limiters • LED Indicators

2 Channel Power Amplifier • 4000 Watts • Dual Mono, High Current Power Supply • 3RU Chassis • High-Current Toroidal Transformers • User-Defeatable Clip Limiters • LED Indicators

RMX 4050HD small

Item added to your cart.

Price: $1399.00

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC RMX 5050

5000W, 2 Channel Power Amplifier

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5000W, 2 Channel Power Amplifier

2 Channel Power Amplifier • 5000 Watts • Advanced Thermal Performance • Dual Mono, High Current Power Supply • 3RU Chassis • User-Defeatable Clip Limiters • Binding Post

2 Channel Power Amplifier • 5000 Watts • Advanced Thermal Performance • Dual Mono, High Current Power Supply • 3RU Chassis • User-Defeatable Clip Limiters • Binding Post

RMX 5050 small

Item added to your cart.

Price: $1599.00

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC GX3

500W, 2 Channel Power Amplifier

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500W, 2 Channel Power Amplifier

Optimized for Maximum Real-World Headroom • Minimum Depth Chassis Fits in Compact Racks • Detented Gain Controls • GuardRail Automatically Protects the Amplifier • Front Panel LEDs monitor Power, Signal and Clipping

Optimized for Maximum Real-World Headroom • Minimum Depth Chassis Fits in Compact Racks • Detented Gain Controls • GuardRail Automatically Protects the Amplifier • Front Panel LEDs monitor Power, Signal and Clipping

GX3 small

Item added to your cart.

Price: $299.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC ISA-750

2400W, 2 Channel Power Amplifier

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2400W, 2 Channel Power Amplifier

2 Channel Power Amplifier • 2400 Watts • Independent Defeatable Clip Limiters • Bipolar Output Circuitry • Rear-to-Front Air Flow • Comprehensive Protection Circuitry

2 Channel Power Amplifier • 2400 Watts • Independent Defeatable Clip Limiters • Bipolar Output Circuitry • Rear-to-Front Air Flow • Comprehensive Protection Circuitry

ISA-750 small

Item added to your cart.

Price: $758.40

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC ISA-450

1400W, 2 Channel Power Amplifier

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1400W, 2 Channel Power Amplifier

2 Channel Power Amplifier • 1400 Watts • Independent Defeatable Clip Limiters • Bipolar Output Circuitry • Rear-to-Front Air Flow • Comprehensive Protection Circuitry

2 Channel Power Amplifier • 1400 Watts • Independent Defeatable Clip Limiters • Bipolar Output Circuitry • Rear-to-Front Air Flow • Comprehensive Protection Circuitry

ISA-450 small

Item added to your cart.

Price: $557.60

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC CX302

12000W, 2 Channel Power Amplifier

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12000W, 2 Channel Power Amplifier

2 Channel Professional Power Amplifier • Exclusive PowerLight switch-mode power supply • Active inrush limiting • XLR and detachable Euro style input connector • Dip switch control

2 Channel Professional Power Amplifier • Exclusive PowerLight switch-mode power supply • Active inrush limiting • XLR and detachable Euro style input connector • Dip switch control

CX302 small

Item added to your cart.

Price: $1054.00

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC PLX 3102

3100W, 2 Channel Power Amplifier

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3100W, 2 Channel Power Amplifier

2 Channel Power Amplifier • 3100 Watts • Third Generation of QSC PowerLight Technology • Built-In Subwoofer Processing • Filter Switches • Front Panel Indicators

2 Channel Power Amplifier • 3100 Watts • Third Generation of QSC PowerLight Technology • Built-In Subwoofer Processing • Filter Switches • Front Panel Indicators

PLX 3102 small

Item added to your cart.

Price: $1129.00

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC RMX 850

830W, 2 Channel Power Amplifier

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830W, 2 Channel Power Amplifier

2 Channel Power Amplifier • 830 Watts • Independent Defeatable Clip Limiters • Barrier Strip, XLR and 1/4" Balanced Inputs • Independent DC and Thermal Overload Protection

2 Channel Power Amplifier • 830 Watts • Independent Defeatable Clip Limiters • Barrier Strip, XLR and 1/4" Balanced Inputs • Independent DC and Thermal Overload Protection

RMX 850 small

Item added to your cart.

Price: $369.00

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC PL340

4000W, 2 Channel Power Amplifier

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4000W, 2 Channel Power Amplifier

2 Channel Power Amplifier • 8000 Watts • PowerLight Switchmode Power Supply • Flow-Thru Air Path • DataPort Supports Remote Computer Control • Detented Gain Controls • Selectable Input Gains

2 Channel Power Amplifier • 8000 Watts • PowerLight Switchmode Power Supply • Flow-Thru Air Path • DataPort Supports Remote Computer Control • Detented Gain Controls • Selectable Input Gains

PL340 small

Item added to your cart.

Price: $1455.20

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC CMX300V

830W 2 Channel Power Amplifier

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830W 2 Channel Power Amplifier

2-Channel Professional Power Amplifier • 830 Watts • "Flex-Use" Loading Options • Rack Mountable • Detented Gain Controls • Tamper-Proof Security Cover • Recessed Rear DIP Switches

2-Channel Professional Power Amplifier • 830 Watts • "Flex-Use" Loading Options • Rack Mountable • Detented Gain Controls • Tamper-Proof Security Cover • Recessed Rear DIP Switches

CMX300V small

Item added to your cart.

Price: $449.95

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC ISA-280

830W, 2 Channel Power Amplifier

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830W, 2 Channel Power Amplifier

2 Channel Power Amplifier • 830 Watts • Independent Defeatable Clip Limiters • Bipolar Output Circuitry • Rear-to-Front Air Flow • Comprehensive Protection Circuitry

2 Channel Power Amplifier • 830 Watts • Independent Defeatable Clip Limiters • Bipolar Output Circuitry • Rear-to-Front Air Flow • Comprehensive Protection Circuitry

ISA-280 small

Item added to your cart.

Price: $460.00

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC GX5

850W, 2 Channel Power Amplifier

Go to item page Right Arrow Icon of Right Arrow

850W, 2 Channel Power Amplifier

Optimized for Maximum Real-World Headroom • Minimum Depth Chassis Fits in Compact Racks • Detented Gain Controls • GuardRail Automatically Protects the Amplifier • Front Panel LEDs monitor Power, Signal and Clipping

Optimized for Maximum Real-World Headroom • Minimum Depth Chassis Fits in Compact Racks • Detented Gain Controls • GuardRail Automatically Protects the Amplifier • Front Panel LEDs monitor Power, Signal and Clipping

GX5 small

Item added to your cart.

Price: $399.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC ISA-300Ti

830W, 2 Channel Power Amplifier

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830W, 2 Channel Power Amplifier

2 Channel Power Amplifier • 830 Watts • Independent Defeatable Clip Limiters • Bipolar Output Circuitry • Rear-to-Front Air Flow • Comprehensive Protection Circuitry

2 Channel Power Amplifier • 830 Watts • Independent Defeatable Clip Limiters • Bipolar Output Circuitry • Rear-to-Front Air Flow • Comprehensive Protection Circuitry

ISA-300TI small

Item added to your cart.

Price: $615.00

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC PL380

8000W, 2 Channel Power Amplifier

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8000W, 2 Channel Power Amplifier

2 Channel Power Amplifier • 8000 Watts • PowerLight Switchmode Power Supply • Flow-Thru Air Path • DataPort Supports Remote Computer Control • Detented Gain Controls • Selectable Input Gains

2 Channel Power Amplifier • 8000 Watts • PowerLight Switchmode Power Supply • Flow-Thru Air Path • DataPort Supports Remote Computer Control • Detented Gain Controls • Selectable Input Gains

PL380 small

Item added to your cart.

Price: $2439.20

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC PLX 1802

1800W, 2 Channel Power Amplifier

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1800W, 2 Channel Power Amplifier

2 Channel Power Amplifier • 1800 Watts • Bridge Mono Operation • Built-In Subwoofer Processing • Filter Switches • Front Panel Indicators • Third Generation PowerLight technology

2 Channel Power Amplifier • 1800 Watts • Bridge Mono Operation • Built-In Subwoofer Processing • Filter Switches • Front Panel Indicators • Third Generation PowerLight technology

PLX 1802 small

Item added to your cart.

Price: $899.00

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC PLX 2502

2500W, 2 Channel Power Amplifier

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2500W, 2 Channel Power Amplifier

2 Channel Power Amplifier • 2500 Watts • Third Generation of QSC PowerLight Technology • Built-In Subwoofer Processing • Filter Switches • Front Panel Indicators

2 Channel Power Amplifier • 2500 Watts • Third Generation of QSC PowerLight Technology • Built-In Subwoofer Processing • Filter Switches • Front Panel Indicators

PLX 2502 small

Item added to your cart.

Price: $1029.00

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

QSC CX702

2400W, 2 Channel Power Amplifier

Go to item page Right Arrow Icon of Right Arrow

2400W, 2 Channel Power Amplifier

2 Channel Professional Power Amplifier • Exclusive PowerLight switch-mode power supply • Active inrush limiting • XLR and detachable Euro style input connector • Dip switch control

2 Channel Professional Power Amplifier • Exclusive PowerLight switch-mode power supply • Active inrush limiting • XLR and detachable Euro style input connector • Dip switch control

CX702 small

Item added to your cart.

Price: $1720.00

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

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