SKU: 77316647925

Lab Gruppen E4:2 400W E-Series Installation Amplifier with 2 Flexible Output Channels (DEMO)

Sale price$553.95 Regular price$615.50
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Description

Lab Gruppen E4:2 400W E-Series Installation Amplifier with 2 Flexible Output Channels (DEMO)** IN GOOD CONDITION ** System installers in search of a compact, flexible amplifier with Hi Z and Lo Z output capabilities should check out the Lab. Gruppen E 4: 2, a 1 RU, two channel 400W amplifier for mixed A V installation applications. The E 4: 2 utilizes IntelliDrive Energy Efficient Amplifier (IDEEA) technology to produce high power levels with very low distortion while drawing minimal mains current. E Series amplifiers also utilizes Lab.

** IN GOOD CONDITION **

System installers in search of a compact, flexible amplifier with Hi-Z and Lo-Z output capabilities should check out the Lab.Gruppen E 4:2, a 1 RU, two-channel 400W amplifier for mixed A/V installation applications. The E 4:2 utilizes IntelliDrive Energy Efficient Amplifier (IDEEA) technology to produce high power levels with very low distortion while drawing minimal mains current.

E-Series amplifiers also utilizes Lab.Gruppen's proprietary Rail Sensing Limiter (RSL) technology, which greatly reduces signal clipping to ensure high-quality audio output all the time. The amplifier is user-configurable for Hi-Z (70V) or Lo-Z. The RSL circuit senses rail voltage and optimizes each channel output for instantaneous load conditions. This allows for asymmetrical channel loading for optimized performance and efficiency. Total available output power can be allocated among the channels as required by the application. This makes it possible, for example, to drive a small sub on one channel and several 70V ceiling loudspeakers on the second channel.

Benefits
  • 400W amplifier carrying 2 flexible output channels in a high power density 1 rack unit form factor saves rack space and system cost
  • Energy efficient with Energy Star certification for supreme green credentials and exceptionally low lifetime running costs
  • Flexible IntelliDrive permits delivering the 2 x 200W at constant voltage 70V or low impedance (2, 4, and 8 ohms) on any channel
  • 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 to below 1W 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

Specifications

Amplifier
Number of Channels
2
Amplifier Power Rating
2 Ohms / 4 Ohms / 8 Ohms:
200 W
16 Ohms:
200 W
70 V / 100 V:
200 W
Amplifier Class
Class-D
Load Impedance / Voltage
2 / 4 / 8 / 16 Ohms
70 / 100 V
Performance
Protections
RMS, Reactive/Mismatched Load, Short Circuit, Signal Limiter, Thermal, Undervoltage
Frequency Response
2 Hz to 40 kHz
Input Sensitivity
4 dBu (at 4 Ohms)
4 dBu (at 70 V)
1 dBu (at 2 Ohms)
Input Impedance
20 Kilohms
Max Gain
35.2 dB (at 70 V)
27.2 dB (Low-Z)
SNR
> 112 dBA
THD
< 0.1% (20 Hz to 20 kHz, at 1 W)
< 0.05% (1 kHz, Below Rated Power)
Crosstalk
> 70 dB
Common Mode Rejection Ratio (CMRR)
50 dB
Signal Processing
Crossover
Yes
Filters
High-Pass:
50 Hz
Limiting
Yes
Connectivity
Analog Audio I/O
2x Block 3-Pin Balanced Line Input
2x Block 2-Pin Speaker
1x Block 4-Pin GPIO Input/Output
Power
AC Input Power
100 to 240 VAC, 50 / 60 Hz
AC Power Connector
1x IEC 15 A / NEMA 5-15
Power Consumption
1 W (Standby)
Physical
Rackmount Size
1 RU
Cooling
Fan (Variable Speed)
Certifications
ANSIS1.4 Type 2, CCC, CE, CSA, ENERGY STAR, ETL, PSE, UL, RoHS, WEEE
Dimensions
19.0 x 1.8 x 10.9" / 482.6 x 45.7 x 276.9 mm
Weight
9.3 lb / 4.2 kg
Packaging Info
Package Weight
13.64 lb
Box Dimensions (LxWxH)
22.5 x 16.4 x 5.8"
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 77316647925

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4.6 ★★★★★
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A
Verified Purchase
Anne C.
Pawtucket, US
★★★★★ 4
Decent, gets warm though
Size: 10 Ft (Type B with Clamp), Color: Black
Compact with a nice long power cord. However, it does get warm, which makes me nervous, seeing as it is clamped to a wooden table...
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 23, 2026
N
Verified Purchase
Norart
Chelsea, US
★★★★★ 1
Desktop charging station is defective.
Size: 10 Ft (Type B with Clamp), Color: Black
This item was purchased less than 6 months ago and today it suddenly stopped working. A defective unit. Will not buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 19, 2025
J
Verified Purchase
JanP
Draper, US
★★★★★ 5
good for small awkward places.
Size: 10 Ft (Type B with Clamp), Color: Black
Small and extremely versatile. Can be positioned many ways.
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Reviewed in the United States on December 4, 2025
O
Verified Purchase
Orion DeAlynn
West Palm Beach, US
★★★★★ 5
Works great for my desk
I like being able to plug things in above and below the desk. Plug in the things below that I want always plugged in and can easily remove the ones on top
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Reviewed in the United States on February 18, 2026
C
Verified Purchase
CB
Phoenix, US
★★★★★ 5
Great product for the price and is easy to use
This works great. It was easy to install on my desk. Doesn't take up much space. Great for charging my cell phone.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 16, 2025

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