Audiophonics HPA-T400ET Amplifier Class D 3 Way Purifi 3x400W 4 Ohm

Audiophonics HPA-S400ET Amplifier Class D Stereo Purifi 2x400W 4 Ohm
We are proud to offer you the AUDIOPHONICS HPA-T400ET, a 3 way class D power amplifier based on three PURIFI 1ET400A modules. This ready-to-use version is aimed at audiophiles who want to equip themselves with a foolproof amplification solution, with a considerable power reserve as well as impeccable linearity. PURIFI modules are among the most rigorous Class D amplification solutions on the market, with measured performance that is simply outstanding.

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This device is delivered with 230V as standard. If you need a 110V input voltage, please specify it clearly in the comment field when ordering.

AUDIOPHONICS HPA-T400ET

Power Amplifier PURIFI 3x400W 4 Ohm




We are proud to offer you the AUDIOPHONICS HPA-T400ET, a 3 way class D power amplifier based on three PURIFI 1ET400A modules. This ready-to-use version is aimed at audiophiles who want to equip themselves with a foolproof amplification solution, with a considerable power reserve as well as impeccable linearity. PURIFI modules are among the most rigorous Class D amplification solutions on the market, with measured performance that is simply outstanding.

The ensemble offers a high level of sound reproduction that will be suitable to accompany demanding loudspeakers, to soundtrack large listening rooms or for studio applications requiring considerable headroom without compromising on the precision and richness of the audio message.

All the components are integrated in a sober and robust 100% aluminum case with openings and radiators to promote heat dissipation. Its design also allows it to limit the impact of interference on the signal.


Three PURIFI 1ET400A modules

  • Each channel of the amplifier circuit uses its own PURIFI 1ET400A module. These high-performance Class D amplifier circuits each offer a very comfortable 200W of power into 8Ω while taking advantage of the high efficiency of Class D amplifiers.
  • The 1ET400A modules feature a high gain loop of over 75dB across the entire frequency range, providing high performance across the entire spectrum, surpassing any amplifier of any class.
  • The HPA-T400ET's high level of intermodulation distortion (IMD) allows the HPA-T400ET to deliver a precise stereo image across the entire spectrum for enhanced clarity, even during the most complex musical works
  • Harmonic distortion (THD) is kept extremely low at all power levels. This translates into an absence of sound signature and an ability to reproduce all types of music without coloration.
  • The output noise is negligible, which allows deep silences and favors the appearance of details when listening at low volume.
  • The circuit benefits from a high level of rejection (PSRR) that minimizes the impact of the power supply on audio performance.
  • The load-independent frequency response makes it possible to take advantage of all the qualities of this amplification technology even with the most difficult to drive speakers.
  • Low idle power and electromagnetic radiation (EMI). The high gain loop significantly relieves the workload of the MOSFETs and allows them to operate under optimal conditions, reducing losses and EMI emissions.
  • The HPA-T400ET sees these amplifier modules connected with a specially developed interface board for optimal integration.

HYPEX SMPS1200N400 Power Supply Module


The SMPS1200 is a very high efficiency power supply capable of developing a nominal power of 1200 Watts in an extremely small footprint. It has been specifically designed and developed by HYPEX to provide the 2 x 64V voltage needed to operate the most demanding amplifier modules.

This quality, low-noise power supply meets the power requirements of the amplifier modules in every respect. In addition, the amplifier modules themselves have an excellent ability to reject power supply noise. The HPA-T400ET is therefore extremely insensitive to imperfections in the power supply and to voltage/current variations that can cause noise.

Audiophonics HPA-T400ET Amplificateur 3 voies class D Purifi 3x400W 4 Ohm

Audiophonics Driver Board

The amplifier module Purifi is driven by a controller module of our design. 

A Texas Instrument LM4562 OPA per channel is used, these are very low distortion AOPs offering the greatest transparency with a very low THD. They are mounted on socket allowing their replacement if necessary

To suit all uses we opted for 3 gain settings, adjustable by jumper on the interface card :

  • Gain of + 7.2dB, for a total of 20dB (default) - Maximum power reached with a signal of ~ 4.2V RMS
  • Gain of + 12.5dB, for a total of 25.3dB - Maximum power reached with a signal of ~ 2.2V RMS
  • Bypass: in this case the signal passes directly from the inputs to the modules, allowing the lowest possible gain of 12.8dB. This mode can be interesting when using a powerful preamplifier, capable of driving a load of 2 to 4kOhm and reaching a voltage of ~ 10V RMS

Connectique


Designed for easy integration, the HPA-T400ET has three XLR inputs. These 3 inputs are ideal, especially for a home cinema audio system, in order to install a stereo system with an additional center channel. On the output side, BP-207 Carbon / 24K Gold insulated terminals Ø5.5mm ensure an excellent connection with the speakers. A trigger module allows the amplifier to be switched on automatically from a distance. The latter is compatible with voltages from 5 to 12V.

THD+N

Frequency response

THD vs Freq

Characteristics
TypePower amplifier
Output power8Ω @1%THD : 227W
4Ω @1%THD : 425W
2Ω @1%THD : 450W
THD+NPO=1W, f=1kHz 0.0007 %
PO=10W, f=1kHz 0.00026 %
PO=100W, f=1kHz 0.00015 %
PO=1W, f=20-20kHz 0.0007 %
PO=10W, f=20-20kHz 0.00029 %
PO=100W, f=20-20kHz 0.00017 %
IMD (CCIF)PO=1W, f=18kHz+19kHz 0.00025 %
PO=10W, f=18kHz+19kHz 0.00022 %
PO=100W, f=18kHz+19kHz 0.00027 %
IMD (DIM)PO=1W, DIM30 0.002 %
PO=10W, DIM30 0.002 %
PO=100W, DIM30 0.002 %
Noise floorA-weighted 11.5 µV
Dynamic rangeA-weighted 4Ω 131 dB
SNRA-weighted 4Ω 131 dB
Frequency responseRL= 8Ω, f= 20-20kHz ±0.01 dB
RL= 4Ω, f= 20-20kHz ±0.01 dB
RL= 2Ω, f= 20-20kHz ±0.01 dB
Output impedance1kHz, Iout=1A 0.07 mΩ
20-20kHz, Iout=1A <0.65 mΩ
Input impedanceXLR 100
Bypass : 4.4 
Power supply230V (110V on demand)
Trigger2x trigger 5-12V on jack 3.5mm connector
Dimensions413 x 322 x 60mm
Weight6.25kg
 
Data sheet
InputXLR
OutputSpeaker terminal
ColorBlack
Channel3
Light symbolYes
ClassClass D / T
HeatsinkYes
Fuse holderYes
Amplifier chipPurifi 1ET400A
Power (W)400.0
 
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Audiophonics HPA-T400ET Amplifier Class D 3 Way Purifi 3x400W 4 Ohm
We are proud to offer you the AUDIOPHONICS HPA-T400ET, a 3 way class D power amplifier based on three PURIFI 1ET400A modules. This ready-to-use...

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