AUDIOPHONICS PA-S250NC Stereo Class D Amplifier NCore 2x250W 4 Ohm

AUDIOPHONICS PA-S250NC Stereo Class D Amplifier NCore 2x250W 4 Ohm
The PA-S250NC is a large single mono dual amplifier designed to meet power and precision requirements. Based on a duo of Hypex NCore NC250MP modules, this Class D amplifier is extremely efficient thanks to two switching power supply units with synchronous regulation.

Average votes for this product
4.3 / 5

By buying this product you get 58 loyalty points


Reference : 13545
New product

582,50 €tax excl.

Including 0,04 € for green tax
Available  

- +

Shipping date: 23-08-2019.

Orders placed before 1pm (GMT+1) will be shipped the same day (working day).

Produit garantie 2 ans

Accessories for this product

Find here a selection of useful and/or essential accessories for this product. These are specially selected by the Audiophonics team according to the characteristics of the product.

 
More info

AUDIOPHONICS PA-S250NC

Stereo Class D Amplifier NCore 2x250W 4 Ohm

AUDIOPHONICS PA-S250NC Amplificateur Stéréo Class D NCore 2x250W 4 Ohm

The PA-S250NC is a large single mono dual amplifier designed to meet power and precision requirements. Based on a duo of Hypex NCore NC250MP modules, this Class D amplifier is extremely efficient thanks to two switching power supply units with synchronous regulation.

Like the vast majority of amplifiers based on NCore amplification modules, the frequency response is independent of the load and electromagnetic interference is strictly controlled, significantly limiting distortion and noise. The PA-S250NC will therefore be particularly appreciated in all conditions requiring high amplification power while maintaining a high degree of neutrality in signal reproduction. It will find its place in a professional studio as well as in a private home for high fidelity listening.

Two NC250MP Mono modules

Each channel has its own Hypex NCore NC250MP amplification circuit, capable of delivering no less than 250W each. They are characterized by a flat frequency response regardless of impedance, almost totally frequency independent distortion, very low EMI radiation and a very low noise level. The control is based on a self-oscillating loop controlled by phase shift, taking into account the feedback at the output of the loudspeaker.

The SMPS power supply integrated in each of these amplifier circuits ensures high efficiency and synchronous rectifier control on the main output rails. As the power supplies are specific to each NCore module, the sound scene is refined and the dynamics preserved, without causing any additional distortion.

The internal wiring used to build the PA-S250NC amplifier includes OCC Copper conductors with a cross-section of 2.5mm², in order to benefit from excellent conductivity and preserve all the subtleties of the signal and, in short, the quality of the sound reproduction.

AUDIOPHONICS PA-S250NC Amplificateur Stéréo Class D NCore 2x250W 4 Ohm
AUDIOPHONICS PA-S250NC Amplificateur Stéréo Class D NCore 2x250W 4 Ohm

Switchable inputs on RCA and XLR port

This power amplifier has two RCA input ports (double mono) and two XLR ports (double symmetrical mono). The RCA bases are 24k gold plated with a heat resistant plastic cap.

XLR connectors are high quality Neutrik connectors with metal locking latches and gold-plated contacts.

A two-position switch allows you to switch between XLR and RCA input easily. This will allow two different preamplifiers to be connected to it and the input sources to be alternated.

High quality speaker terminals compatible with banana plugs

The PA-S250NC has two pairs of 24k gold-plated speaker terminals on its rear panel. These terminals are designed to receive banana plugs up to 4mm in diameter. The latter will also be able to accommodate bare wires thanks to a 5.3mm diameter slot that can be locked by screws.

AUDIOPHONICS PA-S250NC Amplificateur Stéréo Class D NCore 2x250W 4 Ohm
AUDIOPHONICS PA-S250NC Amplificateur Stéréo Class D NCore 2x250W 4 Ohm

Trigger 5-12V

A trigger plug provides the comfort of an ignition sequence and allows for a very complete integration into your audio installation.

The power supply input is via an IEC C14 socket with gold-plated copper conductors. The latter works with a 5x20mm 3.150A fuse (supplied and already installed).

Heat dissipation

Because it is capable of developing high power, the PA-S250NC will be subjected to certain thermal stresses during its use. Heat management is a key issue to achieve a high level of audio performance and keep distortion below a controlled threshold.

For this reason, each amplifier module is mounted on a large radiator capable of efficiently dissipating heat. Similarly, carefully distributed ventilation holes will promote air circulation and heat evacuation.

AUDIOPHONICS PA-S250NC Amplificateur Stéréo Class D NCore 2x250W 4 Ohm

Technical characteristics

Specifications
Product typePower amplifier
ClassD
Channels2 (Dual Mono)
Inputs2x RCA
2x 3 poles XLR
OutputSpeaker terminal
TechnologyNCore
Power2 x 180Wrms @ 2 Ohm 1kHz THD=1%
2 x 250Wrms @ 4 Ohm 1kHz THD=1% @1.66V RMS
2 x 130Wrms @ 8 Ohm 1kHz THD=1%
THD+N0.0015 - 0.0024%
SNR121dB @ < 10Hz-20kHz
Output noise30µV
Frequency response10Hz - 50kHz (+0/-3dB)
Trigger5-12VDC
Gain25.5dB
Efficiency (Full power)92%
General
Power supply100-240V
Automatic detection of the input voltage
Electric consumption (full power)2x350W
HousingSandblasted Aluminium
Dimensions413 (Width) x 322 (Depth) x 60mm (Height)
Weight5.1kg
Package1x PA-S250NC Amplifier
1x Angled power cable 3x1.5mm² 1.8m
 
Data sheet
InputXLR
InputRCA
OutputSpeaker terminal
ColorBlack
ChannelDual Mono
Accepts Banana PlugsYes
ClassClass D / T
HeatsinkYes
 
Delivery
We deliver all of France, and internationally.
To discover the amount of the shipping costs, you just have to go in your shopping cart once the desired products added.
To discover our different services and delivery options, click on the following logos:
Colissimo - TNT - SoColissimo
Only registered users can post a review. Log in or create an account .
Average votes
4.3 / 5
4 reviews
Why write products reviews ?
You can share your feelings about products and help other people by sharing your experience

Note :
 5/5
Date :
Excellent value for money
I have a pair of NC-400 based mono kit (built by own) , Ucd3xMP amplifiers for my own.
And I imported some NCore based amplifier for my friends.
This PA-S250NC is excellent!
- rigid body makes this well frequency reproduction balance
though not easy to open top plate... I had to struggle with many screws...
This amplifier may use uniiversal amp chassi but better than most of amps in this price class or upper class.
- Well considered simple construction
Simple and it seems easy to maintain.
- Good sound from initial
I have checked with
Source : 60000 tunes on NAS read by Win10 Pro 64bit rev1903 /foobar2000
DAC: XMOS ES9018K2M USB DAC (Headphone output to use volume knob)
Amp: this one
Speaker : All Accuton based 3way (built by own )
Accuton C173-6-191E woofer 17cm mid-bass
Accuton C50-8-044 Mid-range 50mm mid
Accuton C30-6-358 Tweeter

Bass is apparantly improved.Voice (Mid) range has distortion-less clear and smooth and silky high strings.
 (0)
 (0)
This review has been posted for AUDIOPHONICS PA-S250NC Stereo Class D Amplifier NCore 2x250W 4 Ohm
Note :
 2/5
Date :
Belle dynamique mais écoute fade et ennuyeuse
Cet ampli est assemblé dans un beau boitier sobre et solide.
à l'écoute sur des JBL 4430, avec une digione signature en source, il drive parfaitement les 38cm, normal avec un facteur d'amortissement aux environ de 1000.
Je me suis emballé au départ, séduit par la plage dynamique qui explose tous les amplis de classe A-B.
Après 48h d'écoute, repassant sur mon Audio Gd Master 3, je me suis rendu compte immédiatement à quel point le Ncore 250 était fade, trop mat, manquait de détourage sur les voix et les instruments, en un sens "normalisait" la musique, finalement je suis déçu par cette signature plutôt ennuyeuse.
Sur le papier il est redoutable, au niveau émotionnel, il ne m'a pas touché.
Attention : les modules Hypex vibrent en émettant un buzz comparable à un petit néon, émanant du boitier, même l'ampli éteint, il faut le savoir si vous projetez de l'installer dans une pièce par exemple dans laquelle vous dormez.
 (2)
 (0)
This review has been posted for AUDIOPHONICS PA-S250NC Stereo Class D Amplifier NCore 2x250W 4 Ohm
Note :
 5/5
Date :
Excellent amp, fantastic service.
Not only is this amplifier a superb product in terms of sound age build, Audiophonics themselves have been a pleasure to deal with in every instance, always attentive to queries and happy to help resolve issues.

I’ve used this amp alongside an SMSL SU8 DAC and Neat Iota speakers, and have been extremely happy with the results. Bass is right and full, and separation of instruments, as well as their placement in a well defined soundstage, is excellent. I also really love the speaker terminals and overall design. Very nice for the money. A huge recommend from me!
 (0)
 (0)
This review has been posted for AUDIOPHONICS PA-S250NC Stereo Class D Amplifier NCore 2x250W 4 Ohm
Note :
 5/5
Date :
Très bien!
Ampli de puissance acheté car mon bloc est en révision et ça risque de durer un moment.
Au début pas gagné avec ce ncore, pas le même équilibre, plus montant, un son que je trouvais froid et terne, avec des pointes de dureté dans l’aigu. J’ai 2 enceintes colonnes, et un caisson de grave relié sur une sortie ligne RCA de mon préampli, et la sortie XLR alimente le ncore. Cet ampli de puissance délivre un niveau plus élevé que mon ancien bloc, ce qui fait que le caisson s’est mis en retrait. J’ai dû travailler pour retrouver l’équilibre, en montant le volume du caisson, à fond pour le coup, et en reculant enceintes et caisson de 15 à 20 cm vers le mur derrière.
Sur mon dac j’ai mis un filtre qui valorise davantage le médium aigu, et là miracle, le ncore se met à sonner !
La cerise sur le gâteau a été de changer le câble XLR- XLR Sommercable Epilogue entre le préampli et le ncore, par un Neotech Nemoi 3220 XLR, et là ma chaîne se réveille comme jamais…
Cet ampli de puissance est excellent, c’est détaillé, rapide, un beau médium aigu avec en particulier l’aigu qui est doux et qui file sur les cymbales, les notes de piano avec l’extinction qui dure, etc…
Le grave sur ces amplis classe D est très bien restitué : puissant, détaillé, rapide.
Il ne faut pas avoir d’à priori sur ces amplis, qui peuvent extrêmement bien fonctionner. Je sors juste d’écoutes sur un intégré à lampes haut de gamme d’un ami, que je connais bien, et franchement le ncore n’a pas à rougir. Chez moi j’ai un ampli casque à lampes dont la qualité peut constituer un repère. Sur enceintes le son n’a pas grand-chose à lui envier, et l’écoute est peu fatigante même à des volumes déjà confortables.
Après, comme ces amplis ncore sont certainement très neutres, tout dépend de l’association à la source, et du positionnement des enceintes dans la pièce, qui vont en quelque sorte permettre de « façonner » le son comme on le souhaite, sinon l’ampli n’apporte pas de caractère particulier comme peut le faire un ampli à tubes par exemple. Mais le ncore bien associé peut paradoxalement sonner à la manière d’un tube !
Le prix est très abordable, comparé à ce qu’il faut mettre dans un bon classe AB, ou A, ou ampli à lampes pour un niveau de qualité comparable. Je ne sais pas si un rodage joue un rôle, peut-être les condensateurs ? la question du rodage est très critiquée par certains, dans le cas de cet ampli à base d’Hypex, je ne sais pas.
Mes enceintes ont un rendement aux alentours de 92 dB à 1m pou 1w, le ncore 2x 500w aurait été beaucoup trop puissant, le 2x 250w est déjà plus musclé que mon bloc classe AB 2x 150w !
Au début je me suis dit le ncore juste bon pour un dépannage, après avoir récupéré mon bloc révisé je comptais le revendre, mais c’est l’ancien bloc qui risque de partir !
 (3)
 (0)
This review has been posted for AUDIOPHONICS PA-S250NC Stereo Class D Amplifier NCore 2x250W 4 Ohm
 
AUDIOPHONICS PA-S250NC Stereo Class D Amplifier NCore 2x250W 4 Ohm
The PA-S250NC is a large single mono dual amplifier designed to meet power and precision requirements. Based on a duo of Hypex NCore NC250MP...

Write a review !


*



Customers who bought this product also bought:

No products

To be determined Shipping
0,00 € Tax
0,00 € Total

Check my cart