Ashly KLR-4000 High-Efficiency Power Amplifier for Premium Audio Performance

The Ashly KLR-4000 amplifier is the perfect solution for high-output speaker systems, line arrays, dual 18” subwoofers, and more. If you believe that achieving clean, stable, and quiet amplification requires an expensive European brand, think again. The KLR-4000 delivers premium performance at a fraction of the cost, making it the ideal choice for professional audio setups.

With a signal-to-noise ratio ranging from >108 dB to >110 dB across all models, the KLR-4000 operates with exceptional clarity and reliability. Featuring a 3-position gain switch for both channels, a 3-position mode switch (bridged, stereo, or parallel mono), and a 3-position 12dB/oct high-pass filter switch (30Hz, 50Hz, or off), it offers the flexibility to suit your exact needs.

Ashly KLR-4000 Amplifier Features:

  • High Sustained Power: Optimized for high levels of sustained power in demanding applications.

  • 2 RU Configuration: Compact 2 RU design ideal for rack-mounted installations.

  • 2-Ohm Stability: Ensures stable performance down to 2 Ohms for demanding loads.

  • 70V Operation: The KLR-3200 model provides 70V operation for large-scale installations.

  • Balanced Inputs: Featuring 3-pin Euroblock connectors and combo XLR/TRS inputs for flexible integration.

  • Neutrik® speakON® Connectors: Provides secure, durable output connections for maximum performance.

  • Adjustable High-Pass Filter: 30 Hz, 50 Hz, or off settings to optimize low-end control.

  • Advanced Protection: Equipped with a switch-mode power supply and extensive protection circuitry for long-term reliability.

  • Forced-Air Cooling: Keeps the amplifier cool during prolonged use with front-in, rear-out cooling.

  • Easy Maintenance: Removable, easy-to-clean dust filters to ensure smooth operation.

  • Front-Mounted Attenuators: Convenient access for manual volume adjustments.

  • Permanent Installation: Removable amp handles for permanent rack-mount installations and optional locking front panel volume knobs.

  • Safety & Compliance: Certified with cCSAus, CE, FCC, and RoHS standards for safety and environmental responsibility.

  • Class-H Output Design: The KLR-4000 features a 2-step Class-H output topology for efficient, high-quality amplification.

Whether you're powering high-output systems, subwoofers, or complex line arrays, the Ashly KLR-4000 delivers the clean, stable, and quiet amplification you need for professional sound. It's the affordable alternative to costly European amplifiers, providing exceptional performance and value.

Ashly KLR-4000 Power Ratings

Model Ch. 4Ω (br) 70V
KLR-5000 2 2,500W 1,700W 1,000W 5,000W
KLR-4000 2 2,000W 1,400W 850W 4,000W
KLR-3200 2 1,600W 1,100W 650W 3,200W 800W*
KLR-2000 2 1,000W 600W 350W 2,000W
List price: $2,061.00
Price: $1,649.00