Nord One Up Ncore NC500 amps, Class D ready for prime time .....

maty said:
https://www.google.com/search?q=wurth+ferrite+150+khz+8mm+12.5mm

I have a lot of 8 mm and only one or two of 12.5 mm (two audio systems, two powerstrip).

What devices do you want them for? What problems have you detected?
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I detect no problem in my power line or in my power cables, but I've changed cables and I've got better sound, so I thought may be I could try some Split Core Ferrite to see if they make a difference, as they are cheap.

I believe Nord amps, like almost any other class D amp, are very sensitive to AC power quality. I've installed a dedicated AC line and I've upgraded the power cord and both made a good improvement. So, maybe spending about $30 won't be much of a risk.

What do you think? would you recomend trying some Split Core Ferrites? What differences have they made on your system? where (in the cable) do you recomend to place them? on what cables (power, interconnects, etc)?
 
If we have a lot of noise and interference through the mains, we need amplifier to have a PSRR of 90 dB or more, which is the case of the new PURIFI and not the Hypex NCxxx.

Hypex NC500 has only PSRR of 85 dB.

https://en.wikipedia.org/wiki/Power_supply_rejection_ratio


If with the change of the wiring we notice differences in the sound is that we have problems and our audio system is unable to avoid it.

DC aside, we will need to add RF / EMI filtering. With filters and / or ferrites 150 kHz.
 
What kind of power cable is it? Is it shielded?

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to English:

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Spending little money on a good power cable I got an improvement over the typical and cheap one. Since then I looked for a professional solution much more effective and cheaper than the purchase of esoteric cables that work like LPF (low pass filter) with very few dB of attenuation.


I have a thread in Audiocircle: How to clean the DC at mains. And ripple too
 
In the audio system, a good idea:

Wall -> shielded cable -> powerstrip -> unshielded cable -> preamp, amp, CD player...

Then you can add the RF/EMI filters in different places of the chain but the ferrite 150 kHz, if necessary, better over the unshielded cable.
 
I am in the process of submitting an order for a Nord amp (one of their basic 2 channel power units, with no trigger, BUT just had a couple of people telling me to "hang fire", as the PS Audio Stellar S 300 is a great piece of kit, and will suit my needs, to power my front pair of Amphion Argon 1 speakers... any advice? Nord is British and PS Audio is stateside, not that makes any difference. I like a "brighter sound" if that makes a difference

Peter
 
Peter, which amp are your considering? because ps audio contains ice power.

and the most famous Nord is nc500 or nc1200.
 
Peter,
you mention you have Amphion Argon 1 speakers

could you give me some inputs on their qualities for you? i have read some good reviews about them!

Thanks,
Pascal
 
The Nord NC-500 amp especially with the buffer is a more current product than the Icepower module used in the 300. The 700 mono's would be a closer contest.
 
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I have tested new SR Orange fuse in my SE NC500 MKII in place of SR Blue. I have to say it's noticeably better sound at a similar price (SR Blue is little cheaper now, SR Orange keeps price of former SR Blue).

Unfortunately they did not have 5A so I ordered 6.3A. Generally, the opinions expressed by users about their character are confirmed. So more refined Blue. Although in my opinion these changes are rather not cosmetics, but still another higher level (it's the same character only more refined / slightly better). While the change at the top is smaller, but clear, more detail is heard, it is more voiced and more volatile, it has longer decay, but at the bottom of the change it is quite big. The bass not only has better control, but also more diversity, more nuances are heard, the sound is not as "bulky" as in the Blue but also did not get a hard contour, it is still sufficiently elastic but at the same time better collected, and above all more diverse. Macro dynamics, speed and drive have improved, at the same time I have the impression that the sound has more culture / coherence, it is not thrown on the face like in the Blue but with more refinement. The whole sound goes towards even greater clarity but with refinement - there is no vivisection or blood from the ears, you can hear more, but due to greater coherence / culture it gives the effect of greater fluidity (at least on my speakers). The space has also improved, it is more plastic and a little more distant, Blue throw everything more on the face, Orange hold a little longer distance, they are not so "intrusive".
 

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Hello and Greetings,

While this is my first post, it is the lively discussions on this thread that inspired me to get myself a Nord One NC500DM MKII . I have had this power amplifier for a little over a year and I'm very happy and impressed with it.

Lately, I've been wondering what a tube based pre-amplifier might bring to the party. Specifically the well reviewed Schitt Freya +. If any of you use the Freya + (using the tube stage) to drive the Nord, could you spare some time and jot down your views? And even if you happen o have heard the combo, I'd love to hear what you have to say? Something tells me that this will be a killer combo.

My current Pre is the Wyred4Sound STP SE and it's wonderful. As such I have zero complaints.

I look forward to comments.

Cheers.
 
Krish said:
Hello and Greetings,

While this is my first post, it is the lively discussions on this thread that inspired me to get myself a Nord One NC500DM MKII . I have had this power amplifier for a little over a year and I'm very happy and impressed with it.

Lately, I've been wondering what a tube based pre-amplifier might bring to the party. Specifically the well reviewed Schitt Freya +. If any of you use the Freya + (using the tube stage) to drive the Nord, could you spare some time and jot down your views? And even if you happen o have heard the combo, I'd love to hear what you have to say? Something tells me that this will be a killer combo.

My current Pre is the Wyred4Sound STP SE and it's wonderful. As such I have zero complaints.

I look forward to comments.

Cheers.
Click to expand...

Welcome !

The STP-SE is a nice pre-amp and a few of us on here own it.
 
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