AUDIOPHONICS MPA-S250NC XLR Class D Stereo Amplifier Ncore 2x250W 4 Ohm

AUDIOPHONICS MPA-S252NC XLR Class D Stereo Amplifier Ncore 2x150W 8 Ohm
The Audiophonics MPA-S250NC XLR 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) without sacrificing sound reproduction quality.

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Audiophonics MPA-S250NC XLR

Class D Stereo Amplifier Ncore 2x250W 4 Ohm

Audiophonics MPA-S252NC XLR Amplificateur Stéréo Class D Ncore 2x150W 8 Ohm

The Audiophonics MPA-S250NC XLR 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 (2x150W) 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.
Audiophonics MPA-S252NC XLR Amplificateur Stéréo Class D Ncore 2x150W 8 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 MPA-S252NC XLR Amplificateur Stéréo Class D Ncore 2x150W 8 Ohm

Connectivity

The MPA-S250NC amplifier has a 3-pole stereo XLR input on Neutrik NC3FAV2 sockets. The amplifier output is made on Elecaudio BP-209 24k gold-plated speaker terminals. They also accept banana plugs or forks for quick and easy connections. 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 allows the device to be switched on.

Audiophonics MPA-S252NC XLR Amplificateur Stéréo Class D Ncore 2x150W 8 Ohm

Technical characteristics

Specifications
Product typeAmplifier
ClassD
Number of channelStereo (2)
Max. power (@ 1kHz, THD=1%)2x150W @ 8Ω
2x250W @ 4Ω
2x180W @ 2Ω
Input1x Balanced Stereo XLR
OutputSpeaker terminals
Trigger5-12V
THD+N0.0015%
SNR121dB
Output noise30µV
Output impedance1.5mΩ
Frequency response10Hz - 50kHz
Efficiency92%
General
Supply voltage230V / 110V (automatic switch)
Case materialBrushed Aluminium
Dimensions141 x 357 x 65mm
Weight1860g
ColorBlack
Package1x Audiophonics MPA-S250NC XLR
1x Power cable 1.8m
 
Data sheet
InputXLR
OutputSpeaker terminal
ColorBlack
Channel2 channels (Stereo)
ClassClass D / T
amplifier chipHypex Ncore NC252MP
Power (max)150W
 
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Average votes
4.8 / 5
12 reviews
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Note :
 5/5
Date :
upgrading to 5-star
I bought one of these for my stereo rig. It performs beautifully and reliably.
I like it so much that I've ordered 2 more to update my 4.1 surround system to an efficient, powerful class D setup.
Other class D modules from Hypex and Purifi might measure better but I doubt that I could hear the difference.
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This review has been posted for AUDIOPHONICS MPA-S250NC XLR Class D Stereo Amplifier Ncore 2x250W 4 Ohm
Note :
 5/5
Date :
Superb sound and value
I came from an ICE-power amp that was very similar in size (-10W). It cost more, but was older, too. That said, this little guy performs beautifully, it is the most honest amp I have ever had. An even earlier amp that I have enjoyed is the Parasound A23. Neither of the aforementioned amps comes close to what the little Ncore delivers. The channel separation makes me wish I could afford dual mono, but this one is great at it. The whole soundstage opened up a bit more and I thought that was one of the good aspects of my ICE power amp. Instrument separation improved, too. It seems as there is a bit more air around each one. That they are more localized across the stage.

As I listen in a near field setup, I don't have the depth I would like in my room, but again it delivers every bit that is there, almost to the point where there is the illusion that it goes a bit deeper than the wall. The biggest increases are twofold. For only 10 more watts than the ICE power the dynamics are far better than I have ever had... even with the Parasound that has almost twice the power. The biggest change, most dramatic, was what I call the honesty of the sound. It comes closer than any amp I have ever owned for its honest, natural sound. That also means that some work that I used to enjoy I avoid now- too unpleasant. The amount of honest, natural, unvarnished sound it delivers I find uncanny, for me a first. For the first time I have an amp that is neither warm or cold, it is delivering the music in a better, more honest manner than I am accustomed to hearing. All with an energy that amazes me given that it really doesn't have a lot of horsepower.

If there is a negative, it is as a review stated, the rounding of the leading edge of the notes. I take this to be a conscious decision by the designer, but that is just my guess. The problem, if it is not done exactly right, is that it can really annoy a guy like me immediately... if not sooner. Edgy, brittle I have no interest in, so while they are not there, even though the DAC I have does that little aspect superbly, it is not a deal breaker. The music still has a natural energy, life to itself that I find a breath of fresh air.

There is one real negative though and it has nothing to do with the sound, but rather the esthetics of the circle of light on the switch. Too raw, bright and thick... no finesse visually for a little amp that exudes finesse with its sound... oh well, can't have it all at this point... so I will settle for what counts- most of the great stuff and a very fair price.
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This review has been posted for AUDIOPHONICS MPA-S250NC XLR Class D Stereo Amplifier Ncore 2x250W 4 Ohm
Note :
 5/5
Date :
mzprx
I have an nc400 and now an MPA-250NC. I can't tell the difference between amplifiers :-).
Hypex, Audiophonics good job :-)

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This review has been posted for AUDIOPHONICS MPA-S250NC XLR Class D Stereo Amplifier Ncore 2x250W 4 Ohm
Note :
 4/5
Date :
MPA-S250NC
This is a great amplifier, the case is solid and professional and the sound is excellent. I was disappointed that Audiophonics sent me a European power cable that is not compatible in North America even though I noted on my order that I am in Canada and require North American power compatibility. I was lucky I had an old computer power cable that seems to work alright. Also Canadians be aware that the courier will require HST on delivery and factor that in to your budget. Overall I am very happy too bad the cable was wrong that costs 1 star!
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This review has been posted for AUDIOPHONICS MPA-S250NC XLR Class D Stereo Amplifier Ncore 2x250W 4 Ohm
Note :
 4/5
Date :
first impression: exceptional value
I bought this on the strength of a very positive review of this module in a DIY application in Archimago's blog.
It took a long time to get it, thanks to the pandemic, but once in stock, delivery was quick and painless.
The unit is self is incredibly small, runs very cool, is dead quiet, and sounds as good as any amplifier I've used. I despise subjective audiophile descriptions, so will merely say that in terms of detail, dynamics and lack of irritation, I can't fault it. It also looks very good (although the "on" light is a bit bright - that is common these days.)
At the price, even including shipping and Canadian tax, it's a phenomenal bargain.
I'm giving it 4 stars because it has to prove its reliability, and also because I would like to measure its performance first.
Bravo Audiophonics!
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This review has been posted for AUDIOPHONICS MPA-S250NC XLR Class D Stereo Amplifier Ncore 2x250W 4 Ohm
 
AUDIOPHONICS MPA-S250NC XLR Class D Stereo Amplifier Ncore 2x250W 4 Ohm
The Audiophonics MPA-S250NC XLR is a stereo amplifier based on an amplification module Hypex Ncore NC252MP. This solution is ideal for anyone who...

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