High Power Density: The Lab Gruppen E20:4 amplifier offers 2,000 watts of power across four channels within a compact 1U rack unit. This design saves both rack space and system costs, making it a versatile choice for various installation applications.

IntelliDrive Technology: Equipped with IntelliDrive, the E20:4 delivers up to 4 x 500 W of power with flexibility for any load type, including low impedance (2, 4, 8, or 16 Ohms) or high impedance (70 V or 100 V). This technology ensures high performance and adaptability in different audio setups.

Asymmetric Channel Loading: This feature allows the amplifier to mix and match loads with different impedances. It optimizes overall system efficiency and inventory utilization by enabling unbalanced power distribution across channels, such as driving a small subwoofer on one channel and ceiling loudspeakers on another.

Energy Efficiency: The amplifier is Energy Star certified, providing exceptional green credentials. Its design ensures minimal power consumption and reduced operational costs. The auto-standby and auto-power-on functions further lower power usage during non-operating periods.

Rail Sense Limiter (RSL): The RSL technology reduces signal clipping and simplifies configuration for both constant voltage and low impedance loads. It optimizes output based on instantaneous load conditions and allows for asymmetric loading of channels to enhance performance.

Advanced Cooling and Build: The E20:4 features a temperature-controlled fan with front-to-back airflow, ensuring efficient cooling. The aluminum front panel includes power, temperature, signal, and limit LEDs for straightforward monitoring. It also has GPIO connectors for remote power control and system integration.

Robust Protection and Flexibility: Comprehensive fail-safe circuit protection ensures reliable operation under reduced conditions. The built-in 50 Hz high-pass filter and per-channel attenuation knobs simplify setup and commissioning, offering additional flexibility and control in diverse audio environments.

Specifications:

• General:
  • Number of powered channels: 4
  • Total output (all channels driven): 2000 W
  • Max output voltage per channel: 141 Vp / 100 Vrms
  • Max output current per channel: 16.3 Arms
  • Asymmetric load operation: Yes
• Performance:
  • THD (20 Hz – 20 kHz @ 1 W into 8 Ω): <0.1%
  • THD @ 1 kHz, 1 dB below clipping: <0.05%
  • Signal-to-noise ratio: >106 dBA
  • Channel separation (crosstalk) @ 1 kHz: >70 dB
  • Frequency response: 2 Hz – 40 kHz
  • Input impedance: 20 kΩ
  • Input common mode rejection, CMR: 50 dB
  • Output impedance: 25 mΩ
• Power:
  • Nominal voltage: 100 – 240 VAC
  • Power consumption: 600 W
  • Standby consumption: <2.5 W
  • Mains connector: Standard IEC receptacle
• Physical:
  • Dimensions (HWD): 44 x 483 x 417 mm (1.7 x 19 x 16.4″)
  • Weight: 7.9 kg (17.4 lbs)
  • Finish: Dark grey aluminum front and black steel chassis