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Fidelity Audio Hifi Upgrades

No Noise Ultra X MK2

£429.00
£357.50 (ex. VAT)
NN Ultra X MK2 Mains Purifier

The Fidelty Audio NN Ultra X MK2 Mains Purifier has 6X more noise filtering than the NNU SE housed in a custom case. The NN Ultra X MK2 Mains Purifier gives even greater mains noise reduction, allowing you hear an impressively natural sound, with much greater dynamics and bass extension. On top of this there is much less harsh sibilance. 

4 Available Options

No Noise Ultra X MK2

Features
Common mode filter (Low Frequencies) - Yes
Common mode filter (High Frequencies) - No
Differential filter - Yes
HF Filtering large (32 pole) - No
HF Filtering small (5 pole) - No
Spike Clamping - No

No Noise Ultra X MK2 + HF Filter


Features
Common mode filter (Low Frequencies) - Yes
Common mode filter (High Frequencies) - No
Differential filter - Yes
HF Filtering large (32 pole) - No
HF Filtering small (5 pole) - Yes
Spike Clamping - No

No Noise Ultra X MK2 + Spike Clamp


Features
Common mode filter (Low Frequencies) - Yes
Common mode filter (High Frequencies) - No
Differential filter - Yes
HF Filtering large (32 pole) - No
HF Filtering small (5 pole) - No
Spike Clamping - Yes

No Noise Ultra X MK2 + HF Filter and Spike Clamp


Features
Common mode filter (Low Frequencies) - Yes
Common mode filter (High Frequencies) - No
Differential filter - Yes
HF Filtering large (32 pole) - No
HF Filtering small (5 pole) - Yes
Spike Clamping - Yes


Information
  • Very natural and spacious sound with a much lower noise floor
  • Improved passive differential filter (Higher grade capacitors fitted)
  • Impressive common mode filter
  • HF filter fitted (High Frequency filter) - Option
  • Reduces High Frequency noise such as RFI - Option
  • Operates @ 5 different frequency ranges - Option
  • 2.5Ghz, 1Ghz , 500Mhz , 1Mhz & 100Khz operating region - Option
  • 10A IEC socket has been fitted to allow you to choose any type of mains lead you like.
  • Improved filter
  • Improved circuit layout
  • High Quality Silver plated OFC cable fitted internally
  • Reduces much more mains noise than any plug
  • LED power indication
  • Ideal for larger Hi-Fi or Home Cinema systems with four or more components
  • Uses the latest technology (rapid response high current) clamping components - Option
  • L:220mm H:60mm W:172m
  • Earth Leakage – 2.71mA approx
  • DC resistance (LN) – 80 Kohm approx
  • Consumption – 1.6 watts approx
  • Weight – 1.00 Kg

Please note - Please allow 600 hours minimum burn in time.
 
MPN:
nnux mk2
Brand:
fidelity audio
Condition:
New
Product Code:
No Noise Ultra X mk2
Weight:
2kg
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Customer reviews

(5 Customer reviews)
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NN Ultra X MK2 Mains Purifier Reference

Well what can I say, I purchased this mains purifier after reading the reviews of Fidelity Audio products and in particular the NN Ultra X Mk2 Purifier. I like have caught that awful HiFi bug of looking for the best sound that I can afford and I already have a pretty decent set up, but thought I should see if I could improve upon my already pretty decent sounding system. Now mains purifiers can seem to some to belong to the realms of magic and fantasy, especially the so called ‘shunt technology’ but I felt that I should give it a try and invest in a mains purifier and see if it actually worked. Taking the plunge I opted for the Fidelity Audio Reference Mains Purifier at a cost of over £500 (do not tell my wife as that’s the flight to Spain budget gone). The unit arrived, as advertised, in just over a week from placing my order. Upon first inspection it was a nice shiny box and quite light in weight and I must say that I was quite sceptical that I would hear any difference in the sound of my system but the reviews and the advertising narrative told be that I would. I plugged it into my mains hub, as that's all you need to do, it does not actually connect into the HiFi, which is the very strange thing about it and something that is and will be very hard to explain to non audiophiles and to my wife!! I turned on the unit and selected a well loved CD expecting the same quality that I regularly enjoy and to hear no noticeable difference. Well would you believe it, all the hype from the marketing narrative and the customer reviews are all very true, I could not quite believe the additional detail, the expansive sound, the tightness of the bass, all very apparent and there in great abundance before my very ears. I must say that I was and still am quite astounded that my already very good sounding system is much better than it was before connecting up this ‘magic’ box. I am really pleased and also very relieved that my not inconsiderable investment in this Fidelity Audio NN Ultra Mk2 Purifier has not just improved but vastly improved the sound of my system and made me a very happy chappy indeed. Thanks Fidelity Audio, I look forward to my next purchase with you, once I have come back from Spain that is.

Kevin Smith July 2019

Hi Brent, I just thought I would let you know how im getting on with ultra x. I plugged it in the moment it was delivered and instantly I could tell the diffence. After a week of constantly running the systems dynamics have been taken to whole new level. The detail and dynamics are just out of this world, the music has far more emotion and the sound stage just opens up!. If any one is thinking of buying one don’t wait your missing out so much!!!!. The best £375 ive ever spent!

Phil September 2018

With this newly upgraded filter there is a noticeable difference in the lack of background interference music is now less mushy and a lot clearer since it has had time to run in. Only after listening to this did I realise the difference that could be made by upgrading

Thanks for all upgrades Brent

Tony F

Tony F January 2017

Hi Brent,

Just to let you know, I’ve had great results with the Fidelty Audio NN Ultra X Pro Mains Purifier (now called NNU X). I now have my full soundstage back and don’t have to sit up until 2am to hear my system at its best (though I probably will)! As well as fixing my wonky soundstage, I’ve also noticed how much tighter the bass sounds. All round a great improvement and probably the best value for money hi fi investment I’ve ever made!

Many thanks,

Graham

Graham January 2017

Hi Brent,

Thanks for the efficient processing of my upgrade. Going from a No Noise x to Pro fitted with HF filter made me wonder how much more I’d get from this upgrade (NNUX REF). I am now not far off full burn in time, again the journey varies with immediate improvement with clarity which towards the end, once burnt in the bass tightens up nicely with a fantastic soundstage. I think the HF filter adds to the emphasis of transients (leading edges). The pro is used also with balanced mains, which might sound like overkill but the Pro makes a superb difference in it’s own right.

This upgrade is well worth the money. It is probably not too dissimilar to the New Pro reference, but I suspect that with the improved capacitors, Furutech socket and Kimber wiring in the Reference you will squeeze even more out of your system knowing Brent’s engineering skills!! Invest your money wisely, rather than get something less capable from other Mains Product companies.

Thanks Brent

Chris Dixon

Chris Dixon January 2017