lotuzia a écrit:doit on passé par une prise secteur qui géré une fonction TRIGGER ?
https://www.audiophonics.fr/fr/modules- ... 10661.html
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lotuzia a écrit:doit on passé par une prise secteur qui géré une fonction TRIGGER ?
https://www.audiophonics.fr/fr/modules- ... 10661.html
NuPrime MCX2 or AMG STA?
Now here’s a really interesting comparison – Nuprime’s similarly priced (actually a bit less) 550 watt MCX-2 stereo power amp vs the AMG STA. I really like the sound of the MCX – there’s a muscularity and liveliness that makes it a compelling choice for modern genres. Technically, there are big differences between these power amps. The MCX-2 uses a high power 1000 watt switched mode power supply whereas the STA features a more conventional 380 watt linear toroidal transformer supply. The MCX switches at 550 kHz, the STA at an appreciably higher 700kHz. The specified noise floor performance of the STA is also better.
The AMG is a lot more laid back than the MCX – it just lets things flow in their own time and quietly draws you into the music. The MCX makes it literally jump out of the speakers. And I have to admit I’m torn between the two.
Despite the slower switching speed I think the SMPS does a lot for the pace of the MCX and obviously allows for the massive power rating. The rating is also attributable to the use of bridged modules within the MCX – if you look inside you can see two separate amp boards but each board is in itself a stereo unit. This means that the gain and sensitivity of the MCX is a lot higher – effectively twice – that of the AMG STA. While the noise floor performance of the MCX is greatly improved over previous NuForce models that have also featured an SMPS, the combination of this, high gain and power also means that it is still not quite up with the AMG.
And this is where the AMG pulls ahead – it’s the really fine, low level detail that comes through – there’s space, sustain and decay that I’ve not heard before in any setting – even with the Evolution Monos. You can be listening to tracks you know really well and suddenly there are whole passages that simply weren’t there before. It’s subtle, but it’s definitely there and it really shows you what a good production can do. And you can hear this at very low listening levels – if anything the AMGs will have you listening more quietly whereas the excitement generated by the MCX points you in the other direction.
Do this and the AMG STA moves to a whole other level. Suddenly you have 300 watts per channel on tap. That’s Evolution One territory. The sound immediately expands – there’s a much bigger more clearly defined soundstage that advances metres from the speakers. Bass digs deeper and the top end extends and opens out. Every advantage the MCX-2 (or earlier ST-10) might have had over a single AMG STA is gone and in its place an astonishing mix of both dynamics and finesse.
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