I guess it’s fine for the reseller to have it available for download, and it certainly helps at the moment while Naim sort out the document to be made available on their own site.
It’s only direct links to retailers that are a problem on the forum.
@110dB appreciate if you can throw some light on the input power for both Nap 250 dr and nc 250 as the same are considerably different from each other, in fact the newer one has lesser input power 300va v/s 480va and are the transformers on both the unit are the same i.e rated @ 1020va?
I demoed an NPX300 against a 555PS. The NPX300 certainly held up well. Gave as much detail. The main difference between the two was the “sound signature”. The new range has a new sound. I could have gone for either, but the 555PS was actually cheaper and had better synergy with my classic gear.
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I bought a 555PS for my N-DAC to use with HDX it replaced a XPS2. I personally found it too powerful sounding, too much force in the bottom end, it unbalanced the presentation, how did you find the NPX to sound vs the 555PS?
I ended up buying a Linn Klimax DS1 for streaming, but I still have the NDAC, HDX etc
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The 555PS brings more of everything to the NDX2. Music sounds like studio albums, very live and real sounding (part of this could be the Kudos speakers as well).
The NPX300 brought as much detail, but a cleaner and crisper sounds (don’t confuse cleaner with more detail though). Very much like what the NC222 and new NAP250 also bring to game.
Personal i found it amazing that a power supply can also have this “new sound”. I thought a lot of it was because of the NC222 volume control.
To sum up - the 555PS gave me more shivers down my spine. The NPX300 makes me want to get up and dance!
(Note: both myself and the dealer were surprised at how well the NPX300 holds its own agains Naims flagship power supply!)
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We had a good morning at the Naim 200 open day at Cymbiosis.
Was interesting listening to the new kit and the improvements that the PS brought to the party.
Won’t be changing my existing Naim kit, but did order a new SimRack base shelf as making changes to a double rack system. Plus had a chat about the Organik upgrade for the Linn Klimax DS3 / Katalyst streamer.
DG…
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Another review available.
How does it sound?
We can sum it up very simply: cleaner … it’s really just cleaner. The PRaT has remained, as has the imaging, which is always an important features at Naim. We don’t hear a shred of harshness either. Both at the demo at Wilbert in Utrecht and at Latham itself.
Now the NSC 222 plays fine with the NAP 250. However, when the NPX 300 is connected to it, everything clicks together. This is not subtle. This is just a huge upgrade. There is more roundness in the mid/bass and the imaging brings much more ambience and acoustics. That adds immensely to the experience.
Now this is a hefty upgrade at 7000 euros extra. However, we would definitely save up for it. This is an upgrade that an enthusiast cannot / should not deny himself. And in fact it is quite friendly of Naim to approach it this way: no complete new system is needed. You upgrade your current system where in fact all the characteristics are retained: everything just gets better.
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Seems this discussion of the new 200 classic range got complicated. for us simple people.
its been almost 5k posts now…
please help .
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Simple……listen for yourself. It’s a different sound, do you like it…….can you listen for extended home listening?
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Any idea what “roundness in the mid/bass” means?
Hi @BackToNaim,
This is not the typical mains power the amplifier takes while listening to music. This is the power playing very enthusiastically into a difficult speaker. Music is transient and the audio standard is that loud music represents 1/8 of full power. i.e. if you have an 80W amp, you’ll be using 10W on average with 113W peaks, then x2 for stereo… if playing very loud. For the input power, multiply by the efficiency of the PSU and amp combined.
Power rating
The power rating on NC 250 is based on the global certification approval spec. We run at 264VAC (240+10%) and measure the mains current while delivering 1/8th full power into the lowest rated impedance. Then multiply 264 by the mains current reading and round up. This is then confirmed and certified by an external certified test house.
The previous 250 was measured differently. Measured by the above global standard it would be approx 25% lower than NC 250.
Transformer size
Both have the same size core. We don’t rate the transformer size by VA but if we were it would be 1kVA. i.e. it would be able to continuously deliver 1kVA within the maximum permitted temp rise.
Interestingly the safety bodies also cut open the transformers to look at insulation, short circuit PSUs etc, like a crash test for amplifiers.
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I am investigating what appears to be a software glitch in the NSC 222 or NPX 300: seemingly for no reason, when the devices are in standby mode, the NPX 300 sometimes goes into an infinite loop of turning on and off (you can hear the typical noise of the switch and the toroidal transformer starting to power up, only to shut down immediately, a sort of tlick-tlock).
I have noticed, but haven’t been able to reproduce it consistently, that this anomaly occurs when the NSC 222 is turned off from the mobile app while it may have been streaming. It doesn’t happen every time and often not immediately, but after a few moments from turning off.
These brief restarts don’t manage to turn on the NSC 222, only a change in the illumination of the standby button can be noticed, but the display remains off. As I can’t reproduce it every time and don’t want it to happen when the system is unattended, I am currently leaving everything on 24/7. Has anyone with NSC 222 and NPX 300 noticed the same behavior?
@110dB , do you have any idea what it might be or any tests I can perform to understand more?
@Devraj Funny you should mention imbalance with 555PS and nDac. I have an NDX2 and recently got my nDac out of storage to see what is sounded like with the NDX2. I’m looking to leave it in a week, before casting any final judgement, but my initial thoughts are that while the detail and texture certainly seem more present, there seems to be a hefty thump of more mid and lower end, resulting in a sense of “imbalance”.
I’m giving it some time so I can adjust. While the “wow” is there, the overall effect in my system and room might be a little bit too much. I’m surprised - I didn’t think that would/could be an outcome. We shall see.
I’ve read previously that some prefer the voicing with 555PS non-DR variant. I have the DR variant.
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If you lower the psu noise to much you start hearing things that should have stayed masked & inaudible. Power supplies should be matched - not just pick the most expensive.
One could interpret your reply in many ways. I’ll avoid the bait … mostly 
But perhaps you misinterpreted my post - I was evaluating the nDac with a 555PS.
As many/most (maybe all?) here I evaluate on merit for my system in my room with my ears. The 555PS was evaluated on its merits against an XPS-DR on an NDX2. The 555PS stayed. My apologies for giving you information that you didn’t ask for
But, maybe “Reassuringly expensive” is preferred, per Stella.
Anyhoo, in preemption of Richard, let’s get back to the New Classic!
I am getting my 222/300 tomorrow afternoon. The upgraded LP12 has settled in nicely over the last 5 days and I have pretty much-played vinyl exclusively due to improved SQ over rips. I am expecting that the 222 will give a similar uplift to my rips.
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Hi @Akron,
I forwarded your post to our customer services last night. It’s not a bug we know of. Would you mind emailing them, they will take details and we’ll try to reproduce.
Thanks
Steve
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Funny, just asked Witch Hat if they can replace the connectors on my morgana XLR mono leads to XLR type connectors so I can use these leads on my NSC222 NAP300DR combination……
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Likewise. Bit of a lobster pot if you get my drift…
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