AUDIOPHONICS HPA-S500ET Power Amplifier Class D Stereo Purifi 1ET7040SA 2x500W 4 Ohm

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The Audiophonics HPA-S500ET power amplifier unveils a Class D architecture based on a pair of Purifi 1ET7040SA modules and a custom-designed power supply to enable the amplifier to deliver its full potential. Like all Audiophonics Workshop products, the HPA-S500ET is meticulously designed and assembled by hand in our workshop in France.

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AUDIOPHONICS HPA-S500ET

Power Amplifier Class D Stereo Purifi 1ET7040SA 2x500W 4 Ohm

AUDIOPHONICS HPA-S500ET Amplificateur de Puissance Class D Stéréo Purifi 1ET7040SA 2x500W 4 Ohm

The Audiophonics HPA-S500ET power amplifier unveils a Class D architecture based on a pair of Purifi 1ET7040SA modules and a custom-designed power supply to enable the amplifier to deliver its full potential. Like all Audiophonics Workshop products, the HPA-S500ET is meticulously designed and assembled by hand in our workshop in France.

With this model, you get a powerful, high-performance amplification solution, capable of powering demanding audio systems while delivering incredibly fine, linear sound reproduction. There's no compromise between power and sonic precision. Purifi modules feature a particularly rigorous design for exceptional measured performance.

All components are housed in a sturdy, solid aluminum enclosure, with openings and heat sinks for efficient heat dissipation. Its design also limits the impact of interference on the signal.

AUDIOPHONICS HPA-S500ET Amplificateur de Puissance Class D Stéréo Purifi 1ET7040SA 2x500W 4 Ohm
AUDIOPHONICS HPA-S500ET Amplificateur de Puissance Class D Stéréo Purifi 1ET7040SA 2x500W 4 Ohm

A pair of Purifi 1ET7040SA modules

Each channel of the amplifier circuit uses its own Purifi 1ET7040SA module. These incorporate a high-performance Class D architecture with an available power of 2x500W into 4Ω or 2x250W into 8Ω and a high efficiency of 94%. They also ensure incredibly low levels of THD, intermodulation distortion and noise, favoring rich, precise and perfectly transparent sound reproduction, respecting the original audio signal to reproduce your music with flawless, coloration-free fidelity. It also guarantees a wide, realistic sound image for perfect immersion.

The main feature of the ET7040SA compared to its little brother the ET400A is its current capacity, making it stable under 2ohm, and bringing its maximum power to 950W. What's more, the frequency response of these modules is totally independent of load, allowing you to take full advantage of the capabilities of this design, even with speakers that are difficult to drive. The circuit also benefits from a high level of rejection (PSRR), reducing the impact of the power supply on audio performance. The two Purifi 1ET7040SA amplifier modules are linked by a specially developed interface board for optimum integration.

A customized power module

The Audiophonics HPA-S500ET features a specially designed, high-efficiency PFC switching power supply. Delivering a power of 2000W and a voltage of 70V, it provides optimum, clean and stable power to the amplifier modules. The modules are thus able to deliver their full potential and develop their full power, without restriction.

This power supply also ensures very low noise levels, and incorporates two stages of EMI filtering. Output voltages are tightly regulated, and the PFC system offers effective power factor correction for a particularly clean signal. This power supply also features automatic 110V/220V AC switching, enabling the amplifier to be powered without risk.

AUDIOPHONICS HPA-S500ET Amplificateur de Puissance Class D Stéréo Purifi 1ET7040SA 2x500W 4 Ohm

Audiophonics interface card

The two modules are controlled in phase opposition, to cancel the "Power Supply Pumping" effect. This makes for greater power supply stability, distributing current draw alternately on each rail, thus increasing its capacity. We opted for two-level voltage regulation, to optimize the power supply to the AOPs and the auxiliary voltage supplied to the modules. One Texas Instrument LM4562 AOP is used per channel. These are very low-distortion PDUs, offering maximum transparency with very low THD. They are mounted on a socket so they can be replaced if necessary. To suit all applications, we've opted for three gain settings, switchable via jumper on the underside of the unit.

Balanced & Single-ended connectors

Designed for easy integration, the HPA-S500ET features both balanced XLR and single-ended RCA stereo inputs. Bipolar selectors make it easy to change input sources, and even allow independent control of channels. On the output side, insulated BP-207 terminal blocks with 24k gold-plated contacts ensure an excellent connection between amplifier and loudspeakers. A dual 5-12V trigger module lets you integrate the amplifier into an automatic on/off chain for your entire audio system.

AUDIOPHONICS HPA-S500ET Amplificateur de Puissance Class D Stéréo Purifi 1ET7040SA 2x500W 4 Ohm
1ON/OFF button
2Power input
3Trigger
4Right channel speaker output
5Left channel speaker output
6Right channel XLR input
7Right channel input selector
8Right channel RCA input
9Left channel XLR input
10Left channel input selector
11Left channel RCA input
AUDIOPHONICS HPA-S500ET Amplificateur de Puissance Class D Stéréo Purifi 1ET7040SA 2x500W 4 Ohm AUDIOPHONICS HPA-S500ET Amplificateur de Puissance Class D Stéréo Purifi 1ET7040SA 2x500W 4 Ohm AUDIOPHONICS HPA-S500ET Amplificateur de Puissance Class D Stéréo Purifi 1ET7040SA 2x500W 4 Ohm

Technical characteristics

Specifications
Product typePower amplifier
Output power (max)2x950W @ 2Ω, 1% THD
2x800W @ 2Ω, 0.1% THD
2x500W @ 4Ω, 1% THD
2x420W @ 4Ω, 0.1% THD
2x250W @ 8Ω, 1% THD
2x210W @ 8Ω, 0.1% THD
Efficiency94% @ 500W, 4Ω, 1kHz
InputsBalanced stereo XLR
Single-ended stereo RCA
OutputsSpeaker terminals
Trigger2* Trigger 5-12V connectors on Jack 3.5mm
THD+N0.0004% @ 1W, 1kHz
0.00035% @ 10W, 1kHz
0.00035% @ 200W, 1kHz
0.0006% @ 1W, 20Hz-20kHz
0.0009% @ 10W, 20Hz-20kHz
0.0008% @ 200W, 20Hz-20kHz
IMD (CCIF)0.0002% @ 1W, 18kHz+19kHz
0.00015% @ 10W, 18kHz+19kHz
0.0002% @ 200W, 18kHz+19kHz
IMD (DIM)0.002% @ 1W, DIM30
0.0012% @ 10W, DIM30
0.0009% @ 200W, DIM30
Idle noise14µV (A-wt)
Dynamic range129dB(A)
Output noise~14µV(A)
SNR129dB(A)
Frequency response±0.01dB @ 8Ω, 20Hz-20kHz
±0.01dB @ 4Ω, 20Hz-20kHz
±0.01dB @ 2Ω, 20Hz-20kHz
Output impedance< 12µΩ @ 1kHz
Gain / Input sensitivity for max power at 0.1% THD20dB / 4.19Vrms
26dB / 2.07Vrms
32dB / 1.05Vrms
34dB / 0.83Vrms
Geenral
Supply voltage100-240V AC
Housing materialAluminum
Dimensions413*322*60mm
Weight5.9kg
ColorBlack
Package1* Audiophonics HPA-1Et7040SA
1* Power cable
 
Data sheet
InputRCA
InputXLR
OutputSpeaker terminal
ColorBlack
Channel2 (Stereo)
ClassClass D / T
Amplifier chipPurifi 1ET400A
Power (W)400.0
Remote ControlNo
 
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Tout en rondeur, précis, énergie incroyable, pas de bruits de distorsions, séparation des canaux impressionnante, étagement de la scène sonore incroyable et des possibilités de réglages astucieuses ! Plus en nuance que les petits frères ces modules 1ET7040SA sont largement supérieurs. Et permettent de jouer des enceintes difficiles sans s’écrouler. Alimentation surdimensionnée et extrêmement propres. Boîtier élégant et fin, efficace pour la dissipation thermique fortement atténuée en classe D, on le glisse partout ! Et l’efficience permet une consommation bien plus modérée. Bravo audiophonics. Pendant que certains critiques la classe D, moi je profite de cet amplificateur de puissance qui porte bien son nom.
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AUDIOPHONICS HPA-S500ET Power Amplifier Class D Stereo Purifi 1ET7040SA 2x500W 4 Ohm
The Audiophonics HPA-S500ET power amplifier unveils a Class D architecture based on a pair of Purifi 1ET7040SA modules and a custom-designed power...

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