This is a review and detailed measurements of the AUDIOPHONICS MPA-S250NC stereo Ncore class D amplifier. It is on kind loan from a member and costs 415,83 € tax excl. (US $444).
The enclosure is absolutely adorable! While it is fair bit deep, the other two dimensions are quite small. Combined with the low weight of the unit, you feel like buying a dozen to spread around the house and two to take on the road with you!
The power button feels quite nice. The rear terminals exude quality and would rival and beat what you find on many expensive amplifiers:
Nice to see trigger input as well.
Inside a Hypex NC252MP amplifier module with integrated switching power supply. In use the bottom front got somewhat warm but nothing of concern. Protection circuit is robust and auto recovers from overloads.
If you are not familiar with my amplifier measurements, I highly suggest watching this video on amplifier measurements.
AUDIOPHONICS MPA-S250NC Measurements
Let's start with our dashboard:
That is very competent performance as far as noise+distortion (SINAD):
Zooming in:
Noise performance is excellent:
Class D designs can suffer from load dependencies but we can count on Hypex modules to be free of this:
Crosstalk is very good despite both channels being on the same module:
Multitone test showcases the low distortion:
Dual tone 19+20 kHz shows the same:
Only a couple of sidebands are visible at -98 dB and lower in audible band.
Power curve was very clean with 4 ohm load:
But strangely rose a bit with 8 ohm load:
Back to 4 ohm, we almost get the specified level of power:
I was pleased with rather smooth power vs distortion vs frequency:
The MPA-S250NC passed my stress test with reactive loads of 4 and 8 ohm but shut down into 2 ohm:
There is fair bit of pop on and off noise:
Finally, the amplifier is stable and ready to go on power on:
Conclusions
Audiophonics has produced one adorable stereo amplifier! I just want to sit there and look at it. Fortunately beauty goes beyond the skin, sporting a performance Hypex class D amplifier, producing top class results in all the measurements. You get near state of the art performance at bargain prices with scant space needed to dedicate to the amplifier.
I am happy to recommend the AUDIOPHONICS MPA-S250NC. Can't stop smiling.....
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As always, questions, comments, recommendations, etc. are welcome.
Any donations are much appreciated using: https://www.audiosciencereview.com/forum/index.php?threads/how-to-support-audio-science-review.8150/
The enclosure is absolutely adorable! While it is fair bit deep, the other two dimensions are quite small. Combined with the low weight of the unit, you feel like buying a dozen to spread around the house and two to take on the road with you!
The power button feels quite nice. The rear terminals exude quality and would rival and beat what you find on many expensive amplifiers:Nice to see trigger input as well.
Inside a Hypex NC252MP amplifier module with integrated switching power supply. In use the bottom front got somewhat warm but nothing of concern. Protection circuit is robust and auto recovers from overloads.
If you are not familiar with my amplifier measurements, I highly suggest watching this video on amplifier measurements.
AUDIOPHONICS MPA-S250NC Measurements
Let's start with our dashboard:
That is very competent performance as far as noise+distortion (SINAD):
Zooming in:
Noise performance is excellent:
Class D designs can suffer from load dependencies but we can count on Hypex modules to be free of this:
Crosstalk is very good despite both channels being on the same module:
Multitone test showcases the low distortion:
Dual tone 19+20 kHz shows the same:
Only a couple of sidebands are visible at -98 dB and lower in audible band.
Power curve was very clean with 4 ohm load:
But strangely rose a bit with 8 ohm load:
Back to 4 ohm, we almost get the specified level of power:
I was pleased with rather smooth power vs distortion vs frequency:
The MPA-S250NC passed my stress test with reactive loads of 4 and 8 ohm but shut down into 2 ohm:
There is fair bit of pop on and off noise:
Finally, the amplifier is stable and ready to go on power on:
Conclusions
Audiophonics has produced one adorable stereo amplifier! I just want to sit there and look at it.
Fortunately beauty goes beyond the skin, sporting a performance Hypex class D amplifier, producing top class results in all the measurements. You get near state of the art performance at bargain prices with scant space needed to dedicate to the amplifier.I am happy to recommend the AUDIOPHONICS MPA-S250NC. Can't stop smiling.....
----------
As always, questions, comments, recommendations, etc. are welcome.
Any donations are much appreciated using: https://www.audiosciencereview.com/forum/index.php?threads/how-to-support-audio-science-review.8150/
