LAB GRUPPEN Power Amplifier Model E4:2


▸ High power density – 2 x 200 W in 1U
▸ Certified Energy Star compliant
▸ Flexible – IntelliDrive delivers comparable power per channel at
70 V or Low-Z (2, 4, 8 and 16 ohms)
▸ Asymmetric loading – Allows “mixing and matching” of loads
with different impedances to maximize both overall system
efficiency and inventory utilization
▸ IDEEATM output stage based on patented Class D variant
▸ High efficiency – Extremely low power consumption and
heat output
▸ Auto-standby function – with power consumption < 1 W in
standby state
▸ Exceptionally low lifetime operating costs
▸ RSL switch – Innovative circuit senses rail voltage and optimizes
output for instantaneous load conditions
▸ Efficient cooling – One temperature-controlled fan
▸ Comprehensive circuit protection and fault indication


Number of amplifier channels 2
Max total output all channels driven 400 W
Peak output voltage per channel 100 V / 70 Vrms
Max. output current 11 Arms
Max output power (all channels driven)
2 ohms 200 W
4 ohms 200 W
8 ohms 200 W (requires the “70 V” mode for the RSL. “Lo-Z” gives 100 W)
16 ohms 200 W (requires the “70 V” mode for the RSL, “Lo-Z” gives 50 W)
70 V 200 W
100 V Can deliver 200 W to a 100 V load tapped at 400 W
THD 20 Hz – 20 kHz at 1 W <0.1%
THD at 1 kHz and 1 dB below clipping <0.05%
Signal to Noise Ratio >112 dBA
Channel separation (Crosstalk) at 1 kHz >70 dB
Frequency Response 2 Hz – 40 kHz
Input impedance 20 kOhm
Common Mode Rejection (CMR) 50 dB
Output impedance 25 mOhm
Gain, Sensitivity and Limiters
Limit and gain switch defining limit and gain (per channel) 2 pos: Lo-Z and 70 V
VPL for 70 V mode 100 V
VPL for Lo-Z mode 40 V
Sensitivity for stated power into 4 Ohm in Lo-Z mode 4 dBu
Sensitivity for 70.7 V out in 70 V mode 4 dBu
Sensitivity for stated power into 2 Ohm in Lo-Z mode 1 dBu
Sensitivity for stated power into 8 Ohm in 70 V mode -0.9 dBu
Sensitivity for stated power into 16 Ohm in 70 V mode 2.1 dBu
Gain in 70 V mode 35.2 dB
Gain in Lo-Z mode 27.2 dB
Level adjustment (per channel) Rear panel potentiometer, from -inf to 0 dB
Connectors and Buttons
Input connectors (per ch.) 3 – pin detachable screw terminals, electronically balanced
Output connectors (per ch.) 2 – pin detachable screw terminals
High pass filter Fixed at 50 Hz, switchable per channel
Power control Can be used to go between standby and ON
GPI (power control input) Contact closure type, 2-pin detachable screw terminal, controls the power state
GPO (power state output) Contact closure type, 2-pin detachable screw terminal, for external monitoring of the power state
Cooling Single fan, front to rear airflow, no filter required, temperature controlled speed
Nominal voltage 100 – 240 VAC
Operating voltage 70 – 265 VAC
Standby consumption <1 W
Mains connector IEC inlet
Dimensions W: 483 mm (19”), H: 44 mm (1 U), D: 276 mm (10.9”)
Weight 4.2 kg (9.3 lbs)
Finish Dark grey aluminum front and black steel chassis
Approvals CE, RoHS, WEEE, UL (UL 60065), CSA C22.2 NO. 60065, FCC Part 15 Subpart B Class A, PSE, CCC Energy Star