NORM4.4 - Professional Class H Amplifier
NORM4.4 - Professional Class H Amplifier


Professional Class H Amplifier

The Norm Series 2U professional amplifiers have been engineered for reliability where full power is required for extended times in fixed installations or portable applications. The innovative clean circuit design ensures high efficiency and convenient operation controls .Norm Series delivers extraordinary performance at unmatched value. 


  • Housed in a rugged, all-steel 2U chassis
  • Versatile input / output and cascade matchup
  • Instant MF adjustment ensures superior performance
  • Low distortion, Low noise. High speed amplification obtains clean and powerful sound
  • Operates within 8Ω and 4Ω loads
  • Variable fan speed is automatically adjusted by temperature with front to back air flow for efficient cooling
  • Electronically balanced XLR inputs
  • Touch proof binding post and Speakon outputs
  • Precision indented level controls, power switch
  • Protect, Peak and Signal LEDs indicators for each channel
  • Amplifier protection includes short circuit, overload, excessive temperature, and DC on outputs


Rated Power (8Ω, @ 1kHz)

4 x 400W
Rated Power (4Ω, @ 1kHz)4 x 650W
Max Gain37.5dB
Amplifier TypeH
Current Consumption (1/8 power 4Ω speaker)3.2A @230V
Max Current Consumption (1/8 power 4Ω speaker)6.6A @230V
THD (@1kHz)<0.025% @8Ω, 20Hz-20kHz

IMD (@60Hz/7kHz 4:1)

<0.05% @8Ω, 60Hz/7kHz 4:1
Frequency Response<± 0.5dB, 20Hz-20kHz
Phase Characteristics<± 15°
Damping Factor>300:1
Resolution>80 dB
S/N Ratio>106dB(1kHz, A weight)
Input Sensitivity0.775V
Input Impedanceunbalance>10kΩ, balance >20kΩ
Input Connectors4 x XLR
Output Connector1 x XLR+4 x NL4+4 x Binding post
Power SupplyAC 220-230V 50Hz/60Hz
Coolingairflow from front to back
Environment Temperature )-10℃--40℃(working) -25℃--80℃(storehouse
Dimension (W x D x H)390mm x 483mm x 89mm
Net Weight16kg
Gross Weight17kg

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              NORM4.4β3 NORM4.4 Datasheet 1.0NORM4.4  200KB 2022-07-05 14:33:07