AUDIOPHONICS AP300-S500NC Power Amplifier NCore NC502MP

The Audiophonics AP300-S500NC is a stereo amplifier based on an amplification module Hypex Ncore NC502MP. This solution is ideal for anyone who wants to have a large power reserve (2x500W @ 4Ω) without sacrificing sound reproduction quality.

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AUDIOPHONICS AP300-S500NC Class D Stereo Power Amplifier Ncore NC502MP 2x500W 4 Ohm

AUDIOPHONICS AP300-S500NC Class D Stereo Power Amplifier Ncore NC502MP 2x500W 4 Ohm

The Audiophonics AP300-S500NC is a stereo power amplifier based on an amplification module Hypex Ncore NC502MP. This solution is ideal for anyone who wants to have a large power reserve (2x500W @ 4Ω) without sacrificing sound reproduction quality. This amplifier block will be suitable for example to accompany demanding speakers, to sound large listening rooms or for studio applications requiring a large headroom without compromising the accuracy and richness of the audio message.

All components are integrated in a simple and robust 100% Aluminium housing with openings to facilitate heat dissipation. Its design also allows it to limit the impact of interference on the signal.

Audiophonics AP300-S500NC: Hypex Ncore NC502MP Amplification Board

The amplification circuit uses a Hypex Ncore NC502MP module. This is a versatile high-performance Class D amplifier which offers a tremendous power of 2x500W under a 4Ω load while taking advantage of Class D amplifiers high efficiency.

Its main characteristics are its flat frequency response regardless of load impedance, its almost frequency-independent distortion level and its ability to reject EMI interference. Its operation is based on a self-oscillating loop controlled by phase shift which does not take feedback into account except at the speaker output level.

AUDIOPHONICS AP300-S500NC Class D Stereo Power Amplifier Ncore NC502MP 2x500W 4 Ohm

Audiophonics AP300-S500NC: NCore Technology

NCore amplifiers are the first Class D amplifiers to approach the performance of operational amplifiers, but also to surpass them in terms of sound quality. As a result, they are able to deliver clear, rich, musical sound while remaining compact. This NCore technology combines the stability of the Hypex UcD series amplifiers with lower distortion and output impedance.

AUDIOPHONICS AP300-S500NC Class D Stereo Power Amplifier Ncore NC502MP 2x500W 4 Ohm

Audiophonics AP300-S500NC: SMPS Power Pupply

The NC502MP module also integrates its own power stage. It consists of a regulated half-bridge switching power supply (SMPS) with synchronous rectification on its main output rails. Compact, powerful and efficient, this power supply is particularly suitable to provide clean power to a Class D amplifier.

Its power supply can work with different voltages delivered by the various electrical networks, the power supply is indeed equipped with an automatic input voltage doubler. The NC502MP module also has an overload protection system.

AUDIOPHONICS AP300-S500NC Class D Stereo Power Amplifier Ncore NC502MP 2x500W 4 Ohm

Audiophonics AP300-S500NC: Connectivity

The AP300-S500NC amplifier features a 2-pole stereo RCA input on gold-plated sockets, plus a 3-pole stereo XLR input for balanced signal processing. The XLR or RCA input source is selected via two switch buttons (right and left channel). The amplifier output is made on Elecaudio BP-209 24k gold-plated speaker terminals. They also accept banana plugs or spades for quick and easy connection. A 5-12V trigger connector in 3.5mm Jack format allows to control the automatic ignition of the amplifier when integrated in a compatible system. Finally, a bistable button is used to switch the unit on and off.

AUDIOPHONICS AP300-S500NC Class D Stereo Power Amplifier Ncore NC502MP 2x500W 4 Ohm

Audiophonics AP300-S500NC: 100% Aluminum Case and clean lines>

The Hypex NCore NC502MP amplifier is housed in a 100% black brushed aluminum case. The thick walls of this elegantly-finished case are highly resistant, providing the components with the protection they need. The natural conduction of aluminum, together with a carefully designed air flow, helps dissipate the heat generated by the module. In addition, the acrylic front panel is screen-printed with the Audiophonics logo, and the rear with the nomenclature of each input/output. Its compact size makes it easy to integrate into any audiophile installation, offering high performance in a small space.

AUDIOPHONICS AP300-S500NC Class D Stereo Power Amplifier Ncore NC502MP 2x500W 4 Ohm

Technical characteristics

Specifications
Product typeAmplifier
Amplification typeClass D
Number of channelStereo (2)
Max. power (@ 1kHz, THD=1%)2x350W @ 8Ω
2x500W @ 4Ω
2x450W @ 2Ω
Input1x Single Ended Stereo RCA
1x Balanced Stereo XLR
OutputSpeaker terminals
Trigger5-12V
THD+N0.0018%
SNR124dB
Output noise47µV
Output impedance1.5mΩ
Frequency response10Hz - 48kHz
Efficiency92%
Input sensitivityMax Power at 2.35V RMS
XLR : 2x1.17V RMS
RCA : 1.17V RMS
General
Supply voltage230V / 110V (automatic switch)
Case materialBrushed Aluminium
Total dimensions (WxDxH)300 x 248 x 62mm
Weight2080g
ColorBlack
Package1x Audiophonics AP300-S500NC
1x Power cable
 
Data sheet
InputRCA
InputXLR
OutputSpeaker terminal
ColorBlack
Channel2 (Stereo)
ClassClass D / T
Amplifier chipHypex Ncore
Power (W)500.0
Remote ControlNo
 
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Average votes
5.0 / 5
12 reviews
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 5/5
Date :
AUDIOPHONICS AP300-S500NC Amplificateur de Puissance NCore NC502MP
Ayant changé mes enceintes, pour de nouvelles colonnes 3 voies quatre hauts parleurs d'une impédance de 4 ohms pouvant descendre jusqu'à 2,5 ohms, il y a quelques mois, je n'avais pas réussi à les faire fonctionner correctement malgré les essais de trois amplificateurs successifs. Et voici qu'arrive ce petit amplificateur classe D (comparé à des appareils entre 12 et 25 kg). Suite à une mise en route un peu brouillonne et quelques minutes de chauffe, mes colonnes se sont mises à chanter comme jamais. La scène sonore c'est déployée en largeur, les instruments ont pris leurs places respectives. Le son est tendu sans être agressif sur toute la bande audio, de la droiture avec du gain. Un superbe rapport qualité du son prix.
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This review has been posted for AUDIOPHONICS AP300-S500NC Class D Stereo Power Amplifier Ncore NC502MP 2x500W 4 Ohm
Note :
 5/5
Date :
Extremely good amp for the price.
Great build quality and an impressive power reserve.
The amplifier arrived very well packaged.

My speakers (Canton Townus 90) were previously driven by a Denon 3700H AV receiver.

With this amp, the speakers feel far more controlled, authoritative, and overall noticeably bigger and more powerful.

Highly recommended!
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This review has been posted for AUDIOPHONICS AP300-S500NC Class D Stereo Power Amplifier Ncore NC502MP 2x500W 4 Ohm
Note :
 5/5
Date :
splendide
un ampli de haute volé, ça fourmille de details ,avec du punch ,de la tenue ,et pourtant je vient d'un yamaha rn2000a , qui du coup est utilise en preampli uniquement.
un soufle inexistant meme a fort volume ,et la distorsion n'est pas perceptible pour l'oreille humaine, s'il y en a!!! , tres beau produit!!!!
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This review has been posted for AUDIOPHONICS AP300-S500NC Class D Stereo Power Amplifier Ncore NC502MP 2x500W 4 Ohm
Note :
 5/5
Date :
Excellent amp pushing two sb accoustics 12" subs evrry day for 14 hours with ease and sound is powerfull and precise... price/performanse, no competition.
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This review has been posted for AUDIOPHONICS AP300-S500NC Class D Stereo Power Amplifier Ncore NC502MP 2x500W 4 Ohm
Note :
 5/5
Date :
This is a class D beast!
I purchased the NC502MP stereo amplifier module for my dual subwoofer system, and the results have been nothing short of exceptional. The amplifier delivers immense power with absolute control – my 12” woofers are handled with surgical precision and zero distortion. Its dynamic range is astonishing, and the low end remains tight and authoritative across the 30–100 Hz range. What impressed me the most is how transparent the amp sounds – it adds no coloration or "flavor" to the signal; it simply amplifies what it receives. This is true high-fidelity performance. Integration with my MiniDSP Flex HT processor was seamless, and the system noise floor is dead silent. The build quality is excellent, the module runs cool, and power efficiency is top-notch. In my view, this amp has become the strongest link in my audio chain. If you're serious about low-end performance and high dynamic resolution, this module is a fantastic choice. Highly recommended – especially for those building custom active systems or subwoofer amplification. Thank you Audiophonics!
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This review has been posted for AUDIOPHONICS AP300-S500NC Class D Stereo Power Amplifier Ncore NC502MP 2x500W 4 Ohm
 
AUDIOPHONICS AP300-S500NC Class D Stereo Power Amplifier Ncore NC502MP 2x500W 4 Ohm
The Audiophonics AP300-S500NC is a stereo amplifier based on an amplification module Hypex Ncore NC502MP. This...

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