AUDIOPHONICS AP300-S250NC Power Amplifier Ncore NC252MP

AUDIOPHONICS AP300-S250NC Amplificateur de Puissance Class D Stéréo Ncore NC252MP 2x250W 4 Ohm
The Audiophonics AP300-S250NC is a stereo amplifier based on an amplification module Hypex Ncore NC252MP. This solution is ideal for anyone who wants to have a large power reserve (2x250W @ 4Ω) without sacrificing sound reproduction quality.

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Shipping date: 27-02-2024.

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AUDIOPHONICS AP300-S250NC 

Class D Stereo Power Amplifier Ncore NC252MP 2x250W 4 Ohm

AUDIOPHONICS AP300-S250NC Class D Stereo Power Amplifier Ncore NC252MP 2x250W 4 Ohm

The Audiophonics AP300-S250NC is a stereo amplifier based on an amplification module Hypex Ncore NC252MP. This solution is ideal for anyone who wants to have a large power reserve (2x250W @ 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.

Hypex Ncore NC252MP Amplification Board

The amplification circuit uses a module Hypex Ncore NC252MP. It is a versatile, high-performance Class D amplifier. It offers a very comfortable power of 2x150W at 8Ω while taking advantage of the high efficiency of Class D amplifiers.

Its main characteristics are its flat frequency response regardless of load impedance, its almost frequency-independent level of distortion and its ability to reject EMI interference. Its operation is based on a self-oscillating loop controlled by phase shift and taking into account feedback only at the speaker output.

This amplifier does not have a decoupling capacitor, so it lets the DC component of the signal through. Make sure your source has no DC component present at the output. The DC protection of the module switches on at 12VDC which is very permissive.


AUDIOPHONICS AP300-S250NC Class D Stereo Power Amplifier Ncore NC252MP 2x250W 4 Ohm

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-S250NC Class D Stereo Power Amplifier Ncore NC252MP 2x250W 4 Ohm

SMPS Power Supply

The NC252MP module also integrates the amplification stage. This consists of a regulated half-bridge switching power supply (SMPS) with synchronous rectification on the main output rails. Compact, powerful and efficient, this power supply is particularly suitable for supplying a Class D amplifier cleanly.

In addition, to offer complete compatibility with the voltages delivered by the various electrical networks, the power supply is equipped with an automatic input voltage doubler. The NC252MP module also has an overload protection system.

AUDIOPHONICS AP300-S250NC Class D Stereo Power Amplifier Ncore NC252MP 2x250W 4 Ohm

Connectivity

The AP300-S250NC 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-S250NC Class D Stereo Power Amplifier Ncore NC252MP 2x250W 4 Ohm

100% Aluminum Case and clean lines

The Hypex NCore NC252MP 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-S250NC Class D Stereo Power Amplifier Ncore NC252MP 2x250W 4 Ohm

Caractéristiques techniques

Specifications
Product typeAmplifier
ClassD
Number of channelStereo (2)
Max. power (@ 1kHz, THD=1%)2x150W @ 8Ω
2x250W @ 4Ω
2x180W @ 2Ω
Input1x Unbalanced Stereo RCA
1x Balanced Stereo XLR
OutputSpeaker terminals
Trigger5-12V
THD+N0.0015%
SNR121dB
Output noise30µV
Output impedance1.5mΩ
Frequency response10Hz - 50kHz
Efficiency92%
Input sensitivityMax Power at 1.66V RMS
General
Supply voltage230V / 110V (automatic switch)
Case materialBrushed Aluminium
Dimensions300 x 220 x 65mm
Weight2080g
ColorBlack
Package1x Audiophonics AP300-S250NC
1x Power cable
 
Data sheet
InputXLR
InputRCA
OutputSpeaker terminal
ColorBlack
Channel2 (Stereo)
ClassClass D / T
Amplifier chipHypex Ncore
Power (W)250.0
Remote ControlNo
 
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Average votes
5.0 / 5
3 reviews
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 5/5
Date :
Super
Très bon ampli de puissance qui a vraiment de la "pêche" !
Son très détaillé dans les basses, médium et aigus, ne chauffe pas.
Le son parait légèrement plus froid qu'un ampli classe A/B mais semblerait parfois un peu plus détaillé.
Attention simplement aux câbles que vous allez utiliser pour connecter le préampli à cet ampli car le son ne sera pas exactement le même.(perte dans les aigus, basses plus "boum boum" avec certains câbles)
Je pense avoir trouvé les bons et je suis super satisfait de cet ampli !
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This review has been posted for AUDIOPHONICS AP300-S250NC Class D Stereo Power Amplifier Ncore NC252MP 2x250W 4 Ohm
Note :
 5/5
Date :
Jirka Vopicka
If there will be a variant with 502MP, 2x500MP, NCx, I'll take it immediately, this case size suits me!
 (2)
 (0)
Message from Audiophonics service
Hi,
it's planned soon (this month).
This review has been posted for AUDIOPHONICS AP300-S250NC Class D Stereo Power Amplifier Ncore NC252MP 2x250W 4 Ohm
Note :
 5/5
Date :
Am I the first one?
I received it 3 days after I ordered it in Korea. Hypex's reputation made me nod.
Compared to previous amplifiers, the stage mood has expanded and the instrument's sense of hitting and separation at mid-low notes has definitely improved.
From high to low range, It plays a textured yet clear sound.
I like the housing material of the amplifier and the heat is a little lukewarm.

Even this is the impression of a situation where I don't connect an external DAC and connect with the line-out of the PC! From now on, all I have to do is choose DAC in a happy mood.
I pay tribute to a Member who said NC252MP was a fantastic combination with 'Davis olympia one master'. It's just the way it is.
 (0)
 (0)
This review has been posted for AUDIOPHONICS AP300-S250NC Class D Stereo Power Amplifier Ncore NC252MP 2x250W 4 Ohm
 
AUDIOPHONICS AP300-S250NC Class D Stereo Power Amplifier Ncore NC252MP 2x250W 4 Ohm
The Audiophonics AP300-S250NC is a stereo amplifier based on an amplification module Hypex Ncore NC252MP. This...

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