AUDIOPHONICS HPA-S400ET SPARKOS EDITION Power Amplifier Class D Stereo Purifi 1ET400A 2x400W 4 Ohm

Audiophonics HPA-S400ET Amplifier Class D Stereo Purifi 2x400W 4 Ohm
We are proud to offer the AUDIOPHONICS HPA-S400ET SPARKOS EDITION, a stereo class D power amplifier based on two PURIFI 1ET400A modules and SPARKOS OPA and regulators. This ready-to-use version is designed for audiophiles needing a foolproof amplification solution, with a considerable power reserve as well as impeccable linearity. The PURIFI modules are indeed among the most rigorous Class D amplification solutions on the market, with simply exceptional measured performance.

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This device is delivered by default configured for an input voltage of 230V AC. A switch on the bottom of the unit allows the use of 110V AC.

AUDIOPHONICS HPA-S400ET SPARKOS EDITION

Power Amplifier PURIFI 1ET400A 2x400W 4 Ohm




We are proud to offer the AUDIOPHONICS HPA-S400ET SPARKOS EDITION, a stereo class D power amplifier based on two PURIFI 1ET400A modules and SPARKOS PDUs and regulators. This ready-to-use version is designed for audiophiles needing a foolproof amplification solution, with a considerable power reserve as well as impeccable linearity. The PURIFI modules are indeed among the most rigorous Class D amplification solutions on the market, with simply exceptional measured performance.

This device offers high level sound reproduction which will be suitable to drive demanding speakers, to sonorize large listening rooms or for studio applications requiring a considerable headroom without compromising on the precision and richness of the audio message.

All of the components are integrated in a sober and robust 100% Aluminum housing with openings and heatsinks to help heat dissipation. Its design also allows it to block signal interference.

Dual PURIFI 1ET400A module

  • Both channel of the amplification circuit uses its own PURIFI 1ET400A module. These high performance Class D amplifier circuits each offer a very comfortable power of 200W (@ 8Ω) while making the most of Class D amplifiers high efficiency rating.
  • The 1ET400A modules has a >75dB high gain loop over the entire frequency band, providing high performance across the whole spectrum and surpassing any amplifier regardless of its class.
  • Thanks to hyper-low intermodulation distorsion (IMD) the HPA-S400ET achieves incredible precision on its stereophonic image over the whole spectrum, unmatched by audio amplifiers of any technology or operating class.
  • THD remains extremely low at any frequency and any power level right until clipping. This translates into a total lack of sonic signature, and an ability to reproduce any type of music without preference for genre or production style.
  • The output noise is negligible, which allows deep silences and prevents losing details when listening at low volume.
  • The circuit benefits from a high level of rejection (PSRR) which minimizes the impact of power supply on audio performance.
  • Load-invariant frequency response and negligible output impedance enables the HPA-S400ET to drive the most demanding speakers with ease.
  • Very low idle losses and reduced electromagnetic interference (EMI). The High loop gain allows relaxed timing of the power MOSFETs without degrading audio performance.
  • The HPA-S400ET uses these amplifier modules with an interface card specially developed for optimal integration.

Power Module Hypex SMPS1200A400


The SMPS1200 switching power supply is a model with very high maximum output power of 1200 Watts. It has been specifically designed and developed by Hypex to provide 2 x 64V voltage required for operation of the most demanding amplifier modules.

This low noise high quality Power supply, meets every energy needs of the amplification modules.

AUDIOPHONICS HPA-S400ET SPARKOS EDITION Amplificateur Stéréo Class D Purifi 2x400W 4 Ohm

Audiophonics Interface Board : Sparkos Labs OPA & Regulators

The two modules are driven in opposite phase, to cancel the "Power Supply Pumping" effect. This allows a greater stability of the power supply, distributing alternately on each rail the current calls, and thus increasing its capacities.

We opted for a two-level voltage regulation to optimize the power supply to the PDUs and the auxiliary voltage supplied to the modules. In this Sparkos Edition, no less than four Sparkos Labs SS7915 and SS7815 discrete voltage regulators are used. These easily outperform all monolithic TO-220 format regulators in terms of output noise, transient response and load regulation.

Two Sparkos Labs SS3602 dual discrete PDUs are also used. These Sparkos PDUs are more efficient than the LM4562s of the standard HPA-S400ET and offer lower noise and higher output current with Class A bias. The PDUs are mounted on a DIP8 socket, allowing replacement if necessary.

To suit all uses, we have opted for three gain settings, switchable by jumper on the interface board:

  • Gain of +7.2dB, i.e. a total of 20dB  - Max power reached with a signal of ~4.2V RMS
  • Gain of +12.5dB, that is to say a total of 25.3dB (by default) - Max power reached with a signal of ~2.25V RMS.
  • Bypass : In this case, the signal goes directly from the inputs to the modules, allowing the lowest possible gain of 12.8dB. This mode can be interesting when using a vigorous preamplifier, capable of driving a 2 to 4kΩ load and reaching a voltage of ~10V RMS.

Connectivity


Designed for easy integration, the HPA-S400ET has a balanced stereo (XLR) and unbalanced (RCA) input. Bipolar selectors make it easy to change the input source and even allow independent channel control.

On output side, BP-207 Carbon / Gold 24K Ø5.5mm speaker terminals ensure excellent connection with the speakers.

A trigger module allows the amplifier to be switched on automatically from a distance. This is compatible with voltages from 5 to 12V.

This amplifier's trigger needs to be used with a mono trigger cable (sold separately).

THD+N

Frequency response

THD vs Freq

Specifications
Product typePower Amplifier
Output power (max)8Ω @1%THD : 227W
4Ω @1%THD : 425W
2Ω @1%THD : 450W
Inputs1x Single-ended stereo RCA
1x Balanced stereo XLR
1x Trigger 12V
SortiesSpeaker terminals
1x Trigger 12V
Trigger2x trigger 5-12V on Jack 3.5mm connectors
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 %
Idle noiseA-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 impedanceRCA: 47kΩ / XLR: 94kΩ
Bypass: 2.2 / 4.4 
General
Supply voltage230V (110V on demand)
Dimensions413 x 322 x 60mm
Weight5.63 kg
Housing materialAluminum
ColorBlack
Power cableIncluded
 
Data sheet
InputRCA
InputXLR
OutputSpeaker terminal
ColorBlack
Channel2 (Stereo)
ClassClass D / T
Amplifier chipPurifi 1ET400A
Power (W)400.0
 
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Average votes
5.0 / 5
9 reviews
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Note :
 5/5
Date :
Big muscles
+ power aplenty, very good imaging, superb dynamics, solid built, handsome casing, very good speaker connections
- there is no logo indicating "Sparkos Edition" so no optical difference to standard edition.
 (0)
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This review has been posted for AUDIOPHONICS HPA-S400ET SPARKOS EDITION Power Amplifier Class D Stereo Purifi 1ET400A 2x400W 4 Ohm
Note :
 5/5
Date :
Noisefree wonder amplifier
If you search an amplifier which generates no noise, even when pressing your ear against a horn tweeter of a Triangle Australe Titan tweeter, you will find it here.
I looked for the Sparkos edition as I only use a Marantz AV Receiver as pre amp. So the Sparkos would be the best choice in the pre buffer section.

The shipment of the amplifier was turbo fast to Germany. Unfortunately, the first amp had a problem with the right channel. But no problem with audiophonics after sales support. They sent me a retoure label, checked the amp, confirmed the failure and sent me a new one after checking it.

Again a turbo fast delivery and now everything is fine.

The crystal clear and simulateously dynamical sound of this amp is wonderful. I compared it to the ICE Power Modules in XTZ amps: No comparison. Absolute big difference!
There is so much more "life" in this Purifi amp. I think this will be the last amp for years now and I hope it will last a long time.

Before I had a Musical Fidelity m6 500i 30kg monster and it did not sound as good. It had a white noise permanently (not to loud but with horn tweeters,you got to hear it in 2m distance) . Furthermore it drew 120W of expensive current. This Purifi based beauty only takes 20W.
Additionally it does not get warm and does not convert your listening room in a hot and dry desert.

I just can recommend Audiophonics as not only the products are perfect. Also the support really is top!
 (2)
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This review has been posted for AUDIOPHONICS HPA-S400ET SPARKOS EDITION Power Amplifier Class D Stereo Purifi 1ET400A 2x400W 4 Ohm
Note :
 5/5
Date :
Audiophonics HPA-S400ET SPARKOS
Bonjour,

Aussitôt reçu, aussitôt installé.

Premièrement, merci à Audiophonics de ne pas avoir négligé le colis. Double carton, mousses et tout ce qui faut pour protéger au maximum l'électronique.

Deuxièmement, je dois dire en une phrase : cet ampli est une électronique de grande classe !
Ce qui frappe dès les premières notes (en comparaison de mon Parasound A23 fonctionnant en classe AB), c'est l'absence totale de bruit. Le silence est d'or avec cette électronique.
En terme de linéarité, de transparence, de niveau de détails, mais aussi de musicalité, tout y est.
L'ampli alimente magistralement mes Martin Logan.

Ce que je pouvais reprocher à la classe D, et plus particulièrement Devialet, était le côté mat et plat de la restitution. Il n'est en rien avec le HPA-S400ET.

Je ne peux que dire bravo Monsieur Putzeys (Purifi) et l'équipe Audiophonics, pour nous avoir concocté ce sublime ampli.
 (2)
 (0)
This review has been posted for AUDIOPHONICS HPA-S400ET SPARKOS EDITION Power Amplifier Class D Stereo Purifi 1ET400A 2x400W 4 Ohm
Note :
 5/5
Date :
Super Ampli!
Comme je l'ai mentionné, l'ampli est vraiment bien. Il se trouve que j'ai le Topping PRE90 comme préampli et celui-ci délivre un signal très puissant, donc j'étais obligé de passer le LPA-S400ET en mode by-pass, donc sans utiliser les Sparkos. Du coup le surcoût de cet ampli n'était pas justifié et le LPA-S400ET ferait le même boulot. Chez Audiophonics ils m'ont suggéré de le rendre et prende donc l'ampli mentionné. L'opération s'est déroulée rapidement et je n'ai pas perdu au change, au contraire j'ai le même résultat sonore pour moins cher. Bravo!
 (2)
 (0)
This review has been posted for AUDIOPHONICS HPA-S400ET SPARKOS EDITION Power Amplifier Class D Stereo Purifi 1ET400A 2x400W 4 Ohm
Note :
 5/5
Date :
Audiophonics HPA-S400ET Sparkos Ed. plus Topping PRE90
Après l’acquisition du Topping Pre90 que j’ai utilisé avec un ampli de puissance américain de petite taille bien connu, que je ne vais pas nommer ici, je cherchais quelque chose de mieux. J’ai donc commandé après la lecture des bonnes opinions sur l’Audiophonics HPA-S400ET SPARKOS EDITION. Nous parlons donc ici du couple Topping – Audiophonics.

Le reste de la chaine : Tannoy d700 de 1995, lecteur YBA MP100SE et cd Primare DVD30 utilisé comme transport via le DAC du YBA. Câbles hp sont les Duelund cotton, liaisons XLR Atelier Acoustik (ebay), alimentation – mes propres montages.
L’effet est superbe ! Voici mes impressions – subjectives, bien entendu.
Sur le cd de Mercury Living Presence « 22 Classic Hits » les détails sont sublimes, des silences remplis de bruits de membres de l’orchestre (hors musique) – toucher des archets, changement de pages des partitions, mouvements de toute sorte. La dynamique, l’image stéréo, la place de chaque instrument est précise, le toucher et le souffle des archets sur des cordes – tout ce qui donne la sensation de vérité, cet air entourant l’orchestre.
La voix de Sinatra sur « Only the Lonely » est comme elle doit être en termes de timbre, placée juste devant sur le fond de l’orchestre bien lisible derrière.
D’autres voix (Peppe Servillo de Avion Travel, Claudio Baglioni, Marie Michele Desrosiers sur tous ses disques... ) restent très autentiques, gardant leur charactère propre, sans colorations ni sibilantes (fréquentes sur d’autres amplis).
L’étendue de fréquences à l’air complète – du grâve profond et bien articulé, par les médiums sensationnels jusqu’aux aigus cristallins. L’attaque et extinction des notes – superbes. Chose importante pour moi - à bas niveau ça continue et procure un grand plaisir tard le soir. A par ça – silence absolu !
Je connais un ampli intégré danois coutant plus de dix fois le prix du HPA-S400ET et là, j’ai été épris par l’authenticité qui me rappelle cet nouvel achat. Bon, les conditions d’écouté, les hp et le reste de l’équipement – tout est différent. Sans aucune possibilité de faire une comparaison directe, je reste avec mes bons souvenirs mais subjectivement je reste épaté.
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This review has been posted for AUDIOPHONICS HPA-S400ET SPARKOS EDITION Power Amplifier Class D Stereo Purifi 1ET400A 2x400W 4 Ohm
 
AUDIOPHONICS HPA-S400ET SPARKOS EDITION Power Amplifier Class D Stereo Purifi 1ET400A 2x400W 4 Ohm
We are proud to offer the AUDIOPHONICS HPA-S400ET SPARKOS EDITION, a stereo class D power amplifier based on two PURIFI 1ET400A modules and SPARKOS...

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