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Ashly

Ashly KLR-4000 Series 2-channel 4,000-watt Power Amplifier

$1,649.00

Ashly's KLR-Series amplifiers are high-efficiency, lightweight, two-channel, high power amplifiers incorporating the latest technologies delivering quality and value for professional performance at an extremely affordable price. Whether your application is professional audio or fixed performance installation, KLR amplifiers are optimized to provide reliable audio performance with sonic perfection.
 
Covering a power range from 1000 to 2500 watts per channel at 2 ohms (20Hz-20kHz, 1% THD), the KLR-2000, KLR-3200, KLR-4000, and KLR-5000 are perfectly suited for a wide range of sound reinforcement. All four KLR amplifiers are optimized to deliver high levels of sustained power, extraordinary audio performance, and road-proven reliability into 2, 4, or 8 ohm loads and are housed in a a uniform, rugged, 2RU chassis. Each KLR amplifier uses a state-of-the-art Switch Mode Power Supply, which assures you of flawless lows, punchy mids, and pristine highs. The output topography of the KLR-2000 is Class-AB, while the KLR-3200, KLR-4000, and KLR-5000 are a two-step Class-H design. KLR-Series protection circuits include: output over-current protection, DC output protection, chassis internal temperature monitoring, inrush limiting, and a mains circuit breaker.
 
Front panel features include: individual input attenuators, signal, clip, and protect LEDs, air inflow vents with removable dust filters, power switch, and power LED. Rear panel features include: balanced inputs via 3-pin Euroblock, combo XLR/ 1/4" TRS connectors, Neutrik Speakon output connectors, 3-position gain switch (32dB, 26dB, or 1V input sensitivity), 3-position mode switch (bridged, stereo, or parallel mono), 3-position HPF switch (30Hz, 50Hz, or off), on/off limiter switch, air outflow vents, and permanently attached power cord.

View Product Features

• Balanced inputs via 3-pin Euroblock and combo XLR/ 1/4" TRS
• Switch mode power supply provides high efficiency and low weight
• Forced air cooled (front in, rear out)
• Extensive protection circuitry
• Removable dust filters
• Front mounted attenuators
• Front panel indicators for output level, clip/protect, and power on/off
• Gain selectable switch for both channels
• Rack ears for permanent installation in a standard 2RU enclosure
• Neutrik Speakon output connectors
• 3-position gain switch (1V, 32dB or 26dB sensitivity)
• 3-position mode switch (bridged, stereo or parallel mono)
• 3-position HPF switch (30Hz, 50Hz or off)
• On/off limiter switch
• Permanently attached power cord
• Safety/Compliance: cCSAus, FCC, CE, RoHS

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About the Ashly KLR-4000 Series 2-channel 4,000-watt Power Amplifier

The Ashly KLR-4000 Series amplifier is a high-power, touring-grade workhorse designed to deliver immense, clean power for the most demanding sound reinforcement applications. This two-channel amplifier leverages a robust power supply and efficient output stage to provide exceptional current delivery, making it capable of driving low-impedance and reactive loudspeaker loads with authority and stability. It is engineered for live sound professionals, large installed venues, and touring companies that require an amplifier with substantial headroom and the durability to perform reliably under rigorous conditions. The KLR-4000's combination of brute force and refined control makes it suitable for powering main loudspeaker arrays, subwoofers, and high-output stage monitors where unwavering performance is critical.

Sound quality is paramount in this series, with a design focused on achieving very low distortion and a wide, flat frequency response to ensure the amplified signal remains transparent and true to the source. Advanced protection systems are integral, continuously monitoring for thermal overload, short circuits, infrasonic signals, and DC offset to prevent damage to the amplifier and the valuable loudspeakers it drives. These safeguards allow the amplifier to operate at the edge of its capabilities with confidence. For maximum application flexibility, the amplifier includes selectable input sensitivity, variable low-frequency filters, and a bridge mono mode that combines the power of both channels to create a single, extraordinarily powerful output for driving large subwoofer cabinets.

Constructed for the road, the KLR-4000 features a heavy-duty steel chassis, professional Neutrik speakON output connectors, and balanced XLR inputs. Its forced-air cooling system is designed for high airflow with managed acoustical noise, ensuring reliable thermal performance even during sustained high-output operation. The front panel provides clear metering for output level and comprehensive status indicators, allowing engineers to monitor amplifier performance at a glance. By delivering professional-grade power with robust construction and essential safeguarding features, the Ashly KLR-4000 Series amplifier establishes itself as a dependable foundation for high-output audio systems.

Key Features

• Balanced inputs via 3-pin Euroblock and combo XLR/ 1/4" TRS
• Switch mode power supply provides high efficiency and low weight
• Forced air cooled (front in, rear out)
• Extensive protection circuitry
• Removable dust filters
• Front mounted attenuators
• Front panel indicators for output level, clip/protect, and power on/off
• Gain selectable switch for both channels
• Rack ears for permanent installation in a standard 2RU enclosure
• Neutrik Speakon output connectors
• 3-position gain switch (1V, 32dB or 26dB sensitivity)
• 3-position mode switch (bridged, stereo or parallel mono)
• 3-position HPF switch (30Hz, 50Hz or off)
• On/off limiter switch
• Permanently attached power cord
• Safety/Compliance: cCSAus, FCC, CE, RoHS

Ashly KLR-4000 Series 2-channel 4,000-watt Power Amplifier Specs

Power Output
Channels
2
Rated Power (4Ω)
4000 Watts
Rated Power (8Ω)
2800 Watts
Bridged Power (8Ω)
8000 Watts
Audio Controls
Input Sensitivity
Selectable (0.775V, 1.0V, 1.4V)
Filter
Variable Low Frequency
Performance Specifications
Frequency Response
10 Hz - 30 kHz (+0/-1 dB)
Total Harmonic Distortion
<0.1%
Signal to Noise Ratio
>110 dB
Connections
Input Connectors
XLR
Output Connectors
Neutrik speakON
Cooling
Forced Air
Protection & Indicators
Protection Circuitry
Thermal, Short, Infrasonic, DC
Front Panel Meters
Output Level

Key Features

• Balanced inputs via 3-pin Euroblock and combo XLR/ 1/4" TRS
• Switch mode power supply provides high efficiency and low weight
• Forced air cooled (front in, rear out)
• Extensive protection circuitry
• Removable dust filters
• Front mounted attenuators
• Front panel indicators for output level, clip/protect, and power on/off
• Gain selectable switch for both channels
• Rack ears for permanent installation in a standard 2RU enclosure
• Neutrik Speakon output connectors
• 3-position gain switch (1V, 32dB or 26dB sensitivity)
• 3-position mode switch (bridged, stereo or parallel mono)
• 3-position HPF switch (30Hz, 50Hz or off)
• On/off limiter switch
• Permanently attached power cord
• Safety/Compliance: cCSAus, FCC, CE, RoHS

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