Garage
Shop
Account Icon
Account
Box Icon
Track
order
Telephone Icon
Call
Help Icon
Help
Door with Arrow Icon
Sign In
  1. Home
  2. QSC Store
  3. Discontinued QSC Pro Audio, Live Sound, & DJ
  4. Discontinued QSC Live Sound
  5. Discontinued QSC Live Sound Power Amplifiers

Discontinued QSC Live Sound Power Amplifiers

Filters
QSC ✕
Clear Filters
Reset Done
Price Range
Number of Channels
This is the number of channels that the professional amplifier is designed to power.
Total Continuous Power
This is the total continuous power rating (RMS) that the amplifier is able to output.
Amplifier Class

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.
Inputs
These are the type of input connections that the amplifier has.
Outputs
These are the types of output connections that the amplifier has.
Rackmount Spaces
This is the total number of spaces that the preamplifier will occupy when mounted on a rack.

Shop the Category

filter-icon Filters & Sort
You are currently viewing discontinued products.

QSC RMX 1450

1400W, 2 Channel Power Amplifier

RMX 1450 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC RMX 1450

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

1

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

QSC RMX 2450

2400W, 2 Channel Power Amplifier

RMX 2450 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC RMX 2450

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

1

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

QSC RMX 1850HD

1800W, 2 Channel Power Amplifier

RMX 1850HD big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC RMX 1850HD

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

QSC RMX 4050HD

4000W, 2 Channel Power Amplifier

RMX 4050HD big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC RMX 4050HD

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

QSC RMX 5050

5000W, 2 Channel Power Amplifier

RMX 5050 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC RMX 5050

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

QSC GX3

500W, 2 Channel Power Amplifier

GX3 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC GX3

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

QSC ISA-750

2400W, 2 Channel Power Amplifier

ISA-750 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC ISA-750

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

QSC ISA-450

1400W, 2 Channel Power Amplifier

ISA-450 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC ISA-450

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

QSC CX302

12000W, 2 Channel Power Amplifier

CX302 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC CX302

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

QSC PLX 3102

3100W, 2 Channel Power Amplifier

PLX 3102 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC PLX 3102

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

1

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

QSC RMX 850

830W, 2 Channel Power Amplifier

RMX 850 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC RMX 850

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

QSC PL340

4000W, 2 Channel Power Amplifier

PL340 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC PL340

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

QSC CMX300V

830W 2 Channel Power Amplifier

CMX300V big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC CMX300V

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

QSC ISA-280

830W, 2 Channel Power Amplifier

ISA-280 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC ISA-280

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

QSC GX5

850W, 2 Channel Power Amplifier

GX5 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC GX5

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

QSC ISA-300Ti

830W, 2 Channel Power Amplifier

ISA-300TI big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC ISA-300Ti

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

QSC PL380

8000W, 2 Channel Power Amplifier

PL380 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC PL380

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

QSC PLX 1802

1800W, 2 Channel Power Amplifier

PLX 1802 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC PLX 1802

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

QSC PLX 2502

2500W, 2 Channel Power Amplifier

PLX 2502 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC PLX 2502

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

QSC CX702

2400W, 2 Channel Power Amplifier

CX702 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

QSC CX702

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

1 2 Next

Items per page: 20 40 60

    Clear all
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    Save up to 10 different vehicles in your garage
    Vehicle
    Store     Delete

    2013 Audi A3 Quattro

    2004 BMW 330Ci

    2007 Isuzu i-370

    2014 Toyota Prius C

    2015 Toyota Camry

    Add vehicle Clear all vehicles
    Where to find vehicle info
    Are you sure you want to clear your garage?
    This action cannot be undone. Confirm

    Cancel

    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue

    Cancel

    Shop your 2013 A3 Quattro
    Why Use a Vehicle Fit Guide?
    Change vehicle | Shop without vehicle
    Whoa! Slow down. Add your details below!
    additional information required
    Add vehicle details to confirm fitment
    Ignore fitment details
    Find stereos and more that work -- fast.

    Additional information:

    Remove

    Can't find your vehicle? Click here and we'll help.

    Where to find vehicle info

    Go to Fitment

    Didn't find your car?

    Submit your details and we'll help!
    Please enter the letters as they are shown in the image above. Letters are not case-sensitive.
    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon
    Back

    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.

    Back
    Track your order
    Call our experts
    Support Center
    Return & Exchanges
    Follow on Instagram Instagram logo
    Subscribe on YouTube YouTube logo