LAB GRUPPEN E 40:4_US1 4000W Amplifier with 4 Flexible Output-Channels for Installation Applications (E 40:4_US1)

Vendor: Lab Gruppen
The E 40:4 boasts intelligent eco-friendly credentials, ensuring a low lifetime cost of ownership. Expanding upon Lab Gruppen's renowned legacy in tour-grade sonic excellence and unwavering durability, the E Series emerges as a...

The E 40:4 boasts intelligent eco-friendly credentials, ensuring a low lifetime cost of ownership. Expanding upon Lab Gruppen's renowned legacy in tour-grade sonic excellence and unwavering durability, the E Series emerges as a game-changer in the installation market. It introduces an ultra-compact footprint, top-tier operational efficiency, output flexibility, and an unmatched cost-benefit ratio. Central to the E Series is Lab Gruppen’s pioneering IDEEA (IntelliDrive Energy Efficient Amplifier) technology. Anchored around a patented Class D variant output stage, IDEEA generates high-power levels with minimal distortion while drawing minimal mains current. Exclusive to the E Series, Lab Gruppen’s proprietary Rail Sensing Limiter (RSL™) significantly diminishes signal clipping, ensuring consistent high-quality audio output. Configurable for Hi-Z (70 V or 100 V) or Lo-Z, RSL dynamically senses rail voltages to optimize each output for instantaneous load conditions. These settings also facilitate the asymmetrical loading of channels, maximizing both performance and efficiency. Moreover, the total available output power can be intelligently allocated among the channels as per the application's demands, enabling scenarios like powering a small sub on one channel and multiple 70 V ceiling loudspeakers on another.

Flexible Asymmetric Loading

Maximize performance and efficiency on a per-unit basis, offering the flexibility to distribute the total available output power unevenly across channels or consolidate all power into a single channel for mono applications. This empowers you to effortlessly power a small subwoofer through one channel while commanding a series of 70 V distributed ceiling loudspeakers through the other channel.

Smart Green Credentials with Our IDEEA Platform

The now-proven IntelliDrive Energy Efficient Amplifier (IDEEA) platform represents the latest evolution of our amplifier design philosophies, drawing from technologies in our flagship PLM Series, to create ingenious contractor solutions with supreme green credentials.


  • 4,000 W amplifier carrying 4 flexible output channels in a high power density 1 rack unit form factor saves rack space and system cost

  • Energy efficient for supreme green credentials and exceptionally low lifetime running costs

  • 4 x 900 Watts into 2 Ohms, 4 x 1,000 Watts into 4 Ohms, 4 x 1,000 Watts into 8 Ohms, 4 x 625 Watts into 16 Ohms, 4 x 1,000 Watts into Hi-Z 70 V, 4 x 1,000 Watts into Hi-Z 100 V

  • Asymmetric channel loading allows mixing and matching loads with different impedances to maximize overall system efficiency and inventory utilization

  • High efficiency amplifier with low power consumption and minimized heat generation lowers demands on the installations' mains distribution and cooling systems

  • IDEEA outputs stage based on proprietary, state-of-the-art Class-D amplifier technology for superior performance

  • Comprehensive fail safe circuit protection ensures continued operation even under reduced operating conditions

  • Auto-standby and auto-power on reduces power consumption in non-operating cycles

  • Rail Sense Limiter (RSL) greatly reduces signal clipping and ensures simple configuration for constant voltage and low impedance loads

  • Built in 50 Hz high pass filter selectable per channel available on rear panel switch

  • Per-channel attenuation knob and signal LED on rear panel for simple commissioning

  • Efficient cooling with temperature-controlled fan with front to back airflow

  • Aluminum front panel with power and temperature LEDs and per-channel signal and limit LEDs

  • GPIO connector with power control and indication for further system integration

  • Balanced high-quality analog inputs and amplifier outputs on detachable screw terminals

Number of powered channels


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

Units are capable of delivering extra power to one channel while sending significantly less to the other

THD (20 Hz - 20 kHz @ 1 W into 8 Ω)


THD @ 1 kHz, 1 dB below clipping


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

Nominal voltage

100 - 240 VAC

Power consumption

600 W

Standby consumption

<2.5 W

Mains connector

Standard IEC receptacle

Dimensions (HWD)

44 x 483 x 417 mm
(1.7 x 19 x 16.4")


7.9 kg (17.4 lbs)


Dark grey aluminium front and black steel chassis