1ET400A Amplifier Module


DKK 2,178.00 2178.0 DKK DKK 2,178.00 VAT Excluded

DKK 2,178.00 VAT Excluded

Not Available For Sale

  • Channels
  • Amplifier Configuration
  • Output Power
  • Output Current
  • THD+N
  • Dynamic Range
  • Output Noise
  • Gain
  • Output Impedance
  • Efficiency
  • Idle Losses
  • Supply Voltage
  • Length
  • Width
  • Height
  • Weight

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Data Sheet  



1ET400A is a single-channel, ultra-high performance, analog-input Class D Amplifier module capable of over 400W of power at an audio quality level that sets the standard for power amplifiers of any operating class. Its compact size and high reliability makes it fit a broad range of applications, while its audio quality makes it the undisputable choice even in applications where all the premium is on sound quality.

PURIFI’s continuing research into nonlinear control theory has produced the first mathematically exact largesignal model of self-oscillating amplifier controllers. This breakthrough allows complete optimization of the feedback circuit and improves performance by at least an order of magnitude over existing implementations. The amplifier module further incorporates a comprehensive protection system that makes it tremendously robust and easy to integrate.

For a convenient stereo kit, select the EVAL1 kit instead.


Channels 1
Amplifier Configuration Single Ended
Output Power 425W @ 1% THD, 4Ω
Output Current ~25A
THD+N <0.00017% (-116dB) @ 100W, 4Ω, 20-20kHz
Dynamic Range ~131dB(A)
Output Noise ~11.5µV(A)
Gain 12.8dB
Output Impedance <65µΩ @ 1kHz
Efficiency >94%
Idle Losses ~1.7W
Supply Voltage ±25V to ±65V DC
Length 82mm
Width 63mm
Height 33mm
Weight 145g