Audio professionals looking for a high-quality amplifier capable of delivering high levels of sustained output will be thrilled with the Ashly KLR-4000, a professional-quality power amplifier that provides high-quality audio in a lightweight and efficient design. The amplifier has a 2 RU rackmount design for installation in any equipment rack. It can operate in stereo, bridged, or parallel modes for remarkable versatility. The 2-step Class-H circuitry provides excellent efficiency, while the switch mode power supply delivers deep bass, punchy midrange, and clear treble. The amplifier has Euroblock and combo XLR/TRS inputs, as well as Neutrik Speakon outputs, allowing you to connect to virtually any professional sound system.
Ashly KLR-4000 Specs
Key Specs
| Number of Channels | 2 |
| Amplifier Power Rating | 8 Ohms: 850 W Peak per Channel (Full Range, 1% THD) 4 Ohms: 1400 W Peak per Channel (Full Range, 1% THD) 2 Ohms: 2000 W Peak per Channel (Full Range, 1% THD) 4 Ohms: 4000 W Peak Bridged (Full Range, 1% THD) |
| Amplifier Class | 2-Tier Class-H |
| Load Impedance / Voltage | 2 / 4 / 8 Ohms per Channel |
| Analog Audio I/O | 2x Block 3-Pin Balanced Line Input 2x Combo XLR-1/4" 3-Pin Female Balanced Line Input 2x speakON NL4 Speaker Output |
| Digital I/O | No |
| Network I/O | No |
| Rackmount Size | 2 RU |
| Amplifier Power Rating | 8 Ohms: 850 W Peak per Channel (Full Range, 1% THD) 4 Ohms: 1400 W Peak per Channel (Full Range, 1% THD) 2 Ohms: 2000 W Peak per Channel (Full Range, 1% THD) 4 Ohms: 4000 W Peak Bridged (Full Range, 1% THD) |
| Amplifier Class | 2-Tier Class-H |
| Load Impedance / Voltage | 2 / 4 / 8 Ohms per Channel |
| Protections | DC Fault, DC Offset, Overcurrent, Thermal |
| Frequency Response | 20 Hz to 20 kHz +0.3 dB (1 W at 8 Ohms) 5 Hz to 70 kHz -3 dB |
| Damping Factor | > 380 at 8 Ohms |
| Input Impedance | 12 Kilohms (Balanced) |
| Max Input Level | 21 dBu |
| THD | < 0.05% (20 Hz to 20 kHz, 10 dB Below Rated Output at 4 Ohms) |
Signal Processing
| Crossover | Yes |
| Filters | 2x High-Pass: 30 Hz 50 Hz |
| Limiting | Yes |
| Analog Audio I/O | 2x Block 3-Pin Balanced Line Input 2x Combo XLR-1/4" 3-Pin Female Balanced Line Input 2x speakON NL4 Speaker Output |
| Digital I/O | No |
| Network I/O | No |
| USB I/O | No |
| Mobile App Compatible | No |
| Wireless | No |
| AC Input Power | 120 VAC, 60 Hz |
| AC Power Connector | 1x Hardwired Cord 15 A / NEMA 5-15 |
| Current Consumption | 120 VAC: 14 A (1/8 Power, Pink Noise) 120 VAC: 19.8 A (1/3 Power, Sine Wave) |
| Rackmount Size | 2 RU |
| Cooling | 2x Fan (Variable Speed) |
| Thermal Dissipation | 2489 BTU/hr (Typical) 3516 BTU/hr (Maximum) |
| Operating Temperature | 22 to 72°F / -10 to 40°C |
| Operating Humidity | 0 to 90% |
| Dimensions | 19.0 x 3.5 x 16.0" / 48.3 x 8.9 x 40.6 cm |
| Weight | 26.7 lb / 12.1 kg |
Packaging Info
| Package Weight | 33.7 lb |
| Box Dimensions (LxWxH) | 19 x 16 x 4" |
In the Box
- Ashly KLR-4000 Stereo Power Amplifier (850W/Channel at 8 Ohms Stereo)
- 5-Year Manufacturer Warranty
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