I’m not from Naim, but I don’t think there will be any updated firmware for the nDAC as it’s long out of production. Awesome product btw
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I remember there’s some heated debate in this forum about the chips used in the NCs, I think they use the same one with ND5XS2 (not even the NDX2’s), but with some modification with the result that is actually deemed even better (than NDX2?) by the Naim development team. So I guess it’s not the same one that ND555 is using (PCM1704).
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I think it’s been mentioned once or twice that the DAC Chip itself is only part of the jigsaw. How it is implemented and the DSP applied has a huge amount to do with the eventual sound. Hardware needs good software to get the best out of it.
can someone explain the difference between an NDX2 and NC333, is it just an updated product or a parallel product?
Thanks!
.sjb
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This isn’t much help, I don’t think, but comparison photos between NDX2 and NSS333 here:
And a (brief! X) ) explanation of the differences here:
There has definitely been more information about the NAC and NAP than I recall reading about the NSS
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Well that make sense.
So what’s left now is for as many as possible the masterful ears in this forum to have demo and reviews on the SQ of the NCs vs all other existing gears and combination of them
If the 300 series really was a 500 beater then I don’t believe for a second that Naim would have launched it without retiring the 500’s first
I think some people are being a little mischievous in over-hying expectations.
That said I’m sure the 300 series is something very special indeed.
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No, not here. 
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Some people are just windup merchants. You just have to ignore them 
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I dropped off my LP12 with Tony at Basically Sound, Norfolk yesterday and got to hear his new 300 series demo system.
332/300, 333/300 and 2x 350 through a pair of ATC’s, but I’m not sure which ones.
Sounded truly wonderful at approx £42k (without speakers🫣)
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Come on, you’ve got a spare kidney.
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Surely that’s not a thing,…
I hadn’t realised just how close in price they were to the 552/500 (assuming of course one goes “all in” with the 300s)
332/300 and 2x 350 = £25.6k nap500 & nac552 £26k each, Close?
I would assume that ‘all-in’ would also include the power supplies too
i.e. 333/300, 332/300, 2x350 = £39200
Seriously 
Allowing for the fact that it is possible to negotiate a fairly chunky discount on 552/500 and, I suspect, not the new kit, yes, relatively close in the great scheme of things, not I would agree in absolute terms!
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I didn’t have that in mind just because that includes the source too, although I suppose if you were looking at something comparable, albeit inevitably second hand, including what an NDS/555DR goes for now as opposed to a 333/300 would further narrow the gap.
I would love to go active as full statement would cost me more than I want to spend. I was contemplating 3 x 500DR feeding my 808’s but if the 350’s have a very appealing sound a six pack would be cheaper. Last time I heard a six was with 135’s driving Isobariks many many moons ago. Once heard never forgotten 
I will find out if my dealer can facilitate a dem. I will of course report back with my opinions of the comparison if it can be arranged. If 6 x 350 beats 3 x 500 then the 4/2 split with say 606’s should provide a similar result. Maybe a few people might benefit from the critique.
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