High Power Density: The Lab Gruppen E5:4 delivers 500 watts across four flexible output channels in a compact 1U rack-mountable format. This design maximizes rack space efficiency while reducing overall system costs.

Energy Efficiency: Certified by Energy Star, the E5:4 ensures excellent green credentials and low lifetime operating costs. Its IntelliDrive system allows each channel to provide 125 watts at 70V constant voltage or various low impedance settings (2, 4, 8, and 16 Ohms).

Flexible Output Channels: With asymmetric channel loading capability, users can mix and match loads with different impedances. This flexibility helps to optimize system performance and efficiently utilize inventory.

Advanced Technology: The amplifier features Lab Gruppen’s proprietary IDEEA (IntelliDrive Energy Efficient Amplifier) technology. This advanced Class-D output stage delivers high power with minimal distortion, ensuring superior audio quality and efficiency.

Fail-Safe Protection: Comprehensive circuit protection safeguards the amplifier even under reduced operating conditions. This ensures uninterrupted performance and reliability.

Auto-Standby and Auto-Power-On: To minimize power consumption, the E5:4 automatically switches to standby mode after 20 minutes of inactivity, consuming less than 1 watt. It powers back on when an input signal is detected.

Rail Sense Limiter (RSL): RSL reduces signal clipping by optimizing each output for instantaneous load conditions. This feature simplifies configuration for both constant voltage and low impedance loads.

Built-In Filters and Controls: The E5:4 includes a built-in 50 Hz high-pass filter, selectable per channel via a rear panel switch. Per-channel attenuation knobs and signal LEDs make for straightforward commissioning and monitoring.

Efficient Cooling System: Temperature-controlled fans with front-to-back airflow ensure efficient cooling, preventing overheating and maintaining optimal performance.

User-Friendly Interface: The amplifier’s aluminum front panel features power and temperature LEDs, along with per-channel signal and limit indicators. A GPIO connector enables advanced system integration, and balanced analog inputs and outputs are provided on detachable screw terminals for secure connections.

Specifications

• Number of Channels: 4
• Total Output: 500 W
• Peak Output Voltage: 100 V / 70 Vrms
• Max Output Current: 9.9 Arms
• Output Power: 125 W at 4, 8, 16 Ohms, 70 V
• THD: <0.1% at 20 Hz – 20 kHz
• Signal-to-Noise Ratio: >112 dBA
• Frequency Response: 2 Hz – 40 kHz
• Input Impedance: 20 kΩ
• Output Impedance: 25 mΩ
• Nominal Voltage: 100 – 240 VAC
• Standby Consumption: <1 W
• Dimensions (HWD): 483 x 44 x 381 mm (19” x 1U x 15”)
• Weight: 6 kg (13.2 lbs)
• Finish: Dark grey aluminum front, black steel chassis