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Home / Power Conditioners / Filters / Reference Series
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No Noise SE QNC
No Noise SE QNC
No Noise SE QNC
No Noise SE QNC

Product Description

No Noise SE QNC Mains Purifier

#1 We recommend this as your first choice of filter
 

Moving our filters into a new field of technology we have developed the Quantum Noise Conditioner. We have incorporated our Quantum Pulse Generator circuit to the NN X SE.

What is a Quantum Pulse Generator?

QPG technology protects against EMI energy providing broadband protection against sound interference from high-frequency interference fields. This is achieved by outputting a very low frequency (<10Hz) into the chassis and across the electronics. These low frequency waves cancel out high frequency noise / pulses that bombard the electronics leaving the electronic components to work in a quieter and more stable environment. The technology improves the performance of capacitors in particular and helps lower the noise floor on the ground plane.

The effect? Increased naturalness and three-dimensionality of the sound stage as well as significantly improved depth and focus of the instruments.

Mains Filtering

Mains contamination includes mains noise, spikes / surges and airborne noise such as Wi-Fi interference. On the more conventional side of things we use our classic No Noise X common mode Live Neutral filtering for reducing mains noise. 

The Fidelity Audio NN SE QNC is designed as a All-in-One filter and is like a little brother to both the NN QNC and the NN HF QNC (when used together). 

Offering 3X more noise filtering than the NNU SE with the benefit of a large HF filter with 16 filter points housed in a custom case.

The NN SE QNC Mains Purifier gives great mains noise reduction, allowing you to hear an impressively natural sound, with much greater dynamics and bass extension. On top of this there is much less harsh sibilance. 

No Noise SE QNC

Features
Common mode filter (Low Frequencies) - Yes (half that of the NNUX)
Common mode filter (High Frequencies) - Yes (half that of the NNU HF)
Differential filter - Yes
HF Filtering large (32 pole) - No
HF Filtering large (16 pole) - Yes
HF Filtering small (5 pole) - No
Spike Clamping - Optional


Information

  • Very natural and spacious sound with a much lower noise floor
  • Start stop timing of instruments are improved
  • Quieter background / noise floor
  • HF filter (16 different frequency points)
  • 1.59khz, 4.8khz, 7.2khz, 15.9khz, 48khz, 72khz, 100khz, 159khz, 482khz, 720khz, 1.06mhz, 482mhz, 2.34ghz, 723mhz, 1.06ghz & 4.8ghz
  • Differential filter
  • Common mode filter
  • Designed to work in conjunction with our other range of filters
  • Reduces High Frequency noise such as RFI / EMI
  • 10A IEC socket has been fitted to allow you to choose any type of mains lead you like.
  • Inductorless non-resonant harmonic filter
  • Reduces much more mains noise than any plug
  • Removes high frequency hash
  • High Quality Duelund DCA12GA tin-plated copper multistrand cable fitted internally
  • Ideal for larger Hi-Fi or Home Cinema systems with four or more components
  • LED power indication
  • L:220mm H:60mm W:172m
  • Earth Leakage – 1mA approx
  • DC resistance (LN) – 145 Kohm approx
  • Consumption – 1.6 watts max
  • Weight – 1.10 Kg
  • Voltage 100v to 250v ac
  • Power cable not supplied outside of UK. 0.5m or shorter recommended



Please note - Please allow 600 hours minimum burn in time.

Note on smart meters - The cheap energy monitoring (clamp) meters provided by the electricity supplier shows and interprets reactive current produced by the filter, as current drawn and therefore gives a wildly incorrect reading.

Specifications

MPN
nn SE QNC
Brand
fidelity audio
Condition
New
Product Code
No Noise SE QNC
Weight
2kg

Customer reviews

(6 Customer reviews)
Write A Review
5 Stars
100%
4 Stars
0%
3 Stars
0%
2 Stars
0%
1 Stars
0%

Showing 1 to 5 (6).

Timing and detail Verified Purchase

I already have a Fidelity Audio LPS for my Lumagen processor so I know the quality of the components that Brent builds.

I bought this to upgrade my stereo system.

I already have other mains treatment processes so I was unsure how this unit would work with them.

Unit was built and delivered on time as per the allocated time frame.

Brent states 600 hours for full burn ion but I hade already made up my mind the first evening I auditioned the unit.

I was hearing more detail, one track from the Ben Howard CD, Is It, I heard a percussion detail I had never heard before.

Another big benefit from the component is the timing, I heard vocals and lyrics a lot clearer than I had before.

As I've other mains treatments it's hard to identify exact qualities the No Noise unit brings to my system but I am very happy with it and it is now an integral part of my system.

David Sheridan | Belfast | March 2026

Brief Feedback

Brief feedback on your NO NOISE SE QNC everything you say is correct I've now got more clarity and a much more lifelike sound all round, money well spent thank you

Ordgar Grounds | Christchurch | January 2026

A revelation just happened

Minutes after I wrote a review for the NN SE QNC I listened to Thomas Dolby's Hyperactive. There is a voice vocoder used near the end of the song, where there is one word that I have NEVER been able to decipher, followed by the word Hyperactive. For the first time ever I heard the word LONDON Hyperactive, and clearly. What a revelation! Surely proof that the Fidelity Audio filter is doing its thing!

Jonathan Carter | Epping | September 2024

No Noise SE QNC

Thank you for my recent order. The external photos on your website of your filters don't really do them justice, they are very nicely made and good looking. I particularly like the on/off switch on the back of the unit, and they also look very nicely put together internally from your photos. Well I'm only 31 hours in from new, so a long time to go yet with the burn in process, but already the sound is a little more coherent all round. I say a little, because I use/have many other filters within my system, which is also on its own radial/consumer unit circuit, so that's impressive! Looking forward to reaching the 600 hours + burn in time, because I'm certain I'm in for a real treat! Thanks again.

Jonathan Carter | Epping | September 2024

Very impressed so far

Thank you for my recent purchase. The photos on your website of the casework of your filters don't really do it justice, they are very nice indeed, and I particularly like the on /off switch at the back of the unit. I will be quite honest here, in that I have invested heavily in THE other company's mains filters over the years, and they have all performed very well indeed giving me truly high quality sound from my system. However one such filter is now 20 years old, and although absolutely fine I thought I'd come up to date and try one of yours! Well just 30 hours of burn in time and I can hear the harmonics of instruments have changed, the sound is just even more believable. Voices sounds quite stunning and real. Inner detail is amazing! I'd like to think this is the filter design removing even more noise from the mains. Fabulous! I look forward to the next few weeks as it burns in even more! The combination of yours and the other various filters in my system could well be a match made in heaven!

Jonathan Carter | Epping | September 2024

Showing 1 to 5 (6). Page 1 of 2.

12
Next

No Noise SE QNC Mains Purifier

#1 We recommend this as your first choice of filter
 

Moving our filters into a new field of technology we have developed the Quantum Noise Conditioner. We have incorporated our Quantum Pulse Generator circuit to the NN X SE.

What is a Quantum Pulse Generator?

QPG technology protects against EMI energy providing broadband protection against sound interference from high-frequency interference fields. This is achieved by outputting a very low frequency (<10Hz) into the chassis and across the electronics. These low frequency waves cancel out high frequency noise / pulses that bombard the electronics leaving the electronic components to work in a quieter and more stable environment. The technology improves the performance of capacitors in particular and helps lower the noise floor on the ground plane.

The effect? Increased naturalness and three-dimensionality of the sound stage as well as significantly improved depth and focus of the instruments.

Mains Filtering

Mains contamination includes mains noise, spikes / surges and airborne noise such as Wi-Fi interference. On the more conventional side of things we use our classic No Noise X common mode Live Neutral filtering for reducing mains noise. 

The Fidelity Audio NN SE QNC is designed as a All-in-One filter and is like a little brother to both the NN QNC and the NN HF QNC (when used together). 

Offering 3X more noise filtering than the NNU SE with the benefit of a large HF filter with 16 filter points housed in a custom case.

The NN SE QNC Mains Purifier gives great mains noise reduction, allowing you to hear an impressively natural sound, with much greater dynamics and bass extension. On top of this there is much less harsh sibilance. 

No Noise SE QNC

Features
Common mode filter (Low Frequencies) - Yes (half that of the NNUX)
Common mode filter (High Frequencies) - Yes (half that of the NNU HF)
Differential filter - Yes
HF Filtering large (32 pole) - No
HF Filtering large (16 pole) - Yes
HF Filtering small (5 pole) - No
Spike Clamping - Optional


Information

  • Very natural and spacious sound with a much lower noise floor
  • Start stop timing of instruments are improved
  • Quieter background / noise floor
  • HF filter (16 different frequency points)
  • 1.59khz, 4.8khz, 7.2khz, 15.9khz, 48khz, 72khz, 100khz, 159khz, 482khz, 720khz, 1.06mhz, 482mhz, 2.34ghz, 723mhz, 1.06ghz & 4.8ghz
  • Differential filter
  • Common mode filter
  • Designed to work in conjunction with our other range of filters
  • Reduces High Frequency noise such as RFI / EMI
  • 10A IEC socket has been fitted to allow you to choose any type of mains lead you like.
  • Inductorless non-resonant harmonic filter
  • Reduces much more mains noise than any plug
  • Removes high frequency hash
  • High Quality Duelund DCA12GA tin-plated copper multistrand cable fitted internally
  • Ideal for larger Hi-Fi or Home Cinema systems with four or more components
  • LED power indication
  • L:220mm H:60mm W:172m
  • Earth Leakage – 1mA approx
  • DC resistance (LN) – 145 Kohm approx
  • Consumption – 1.6 watts max
  • Weight – 1.10 Kg
  • Voltage 100v to 250v ac
  • Power cable not supplied outside of UK. 0.5m or shorter recommended



Please note - Please allow 600 hours minimum burn in time.

Note on smart meters - The cheap energy monitoring (clamp) meters provided by the electricity supplier shows and interprets reactive current produced by the filter, as current drawn and therefore gives a wildly incorrect reading.
(6 Customer reviews)
Write A Review
5 Stars
100%
4 Stars
0%
3 Stars
0%
2 Stars
0%
1 Stars
0%

Showing 1 to 5 (6).

Timing and detail Verified Purchase

I already have a Fidelity Audio LPS for my Lumagen processor so I know the quality of the components that Brent builds.

I bought this to upgrade my stereo system.

I already have other mains treatment processes so I was unsure how this unit would work with them.

Unit was built and delivered on time as per the allocated time frame.

Brent states 600 hours for full burn ion but I hade already made up my mind the first evening I auditioned the unit.

I was hearing more detail, one track from the Ben Howard CD, Is It, I heard a percussion detail I had never heard before.

Another big benefit from the component is the timing, I heard vocals and lyrics a lot clearer than I had before.

As I've other mains treatments it's hard to identify exact qualities the No Noise unit brings to my system but I am very happy with it and it is now an integral part of my system.

David Sheridan | Belfast | March 2026

Brief Feedback

Brief feedback on your NO NOISE SE QNC everything you say is correct I've now got more clarity and a much more lifelike sound all round, money well spent thank you

Ordgar Grounds | Christchurch | January 2026

A revelation just happened

Minutes after I wrote a review for the NN SE QNC I listened to Thomas Dolby's Hyperactive. There is a voice vocoder used near the end of the song, where there is one word that I have NEVER been able to decipher, followed by the word Hyperactive. For the first time ever I heard the word LONDON Hyperactive, and clearly. What a revelation! Surely proof that the Fidelity Audio filter is doing its thing!

Jonathan Carter | Epping | September 2024

No Noise SE QNC

Thank you for my recent order. The external photos on your website of your filters don't really do them justice, they are very nicely made and good looking. I particularly like the on/off switch on the back of the unit, and they also look very nicely put together internally from your photos. Well I'm only 31 hours in from new, so a long time to go yet with the burn in process, but already the sound is a little more coherent all round. I say a little, because I use/have many other filters within my system, which is also on its own radial/consumer unit circuit, so that's impressive! Looking forward to reaching the 600 hours + burn in time, because I'm certain I'm in for a real treat! Thanks again.

Jonathan Carter | Epping | September 2024

Very impressed so far

Thank you for my recent purchase. The photos on your website of the casework of your filters don't really do it justice, they are very nice indeed, and I particularly like the on /off switch at the back of the unit. I will be quite honest here, in that I have invested heavily in THE other company's mains filters over the years, and they have all performed very well indeed giving me truly high quality sound from my system. However one such filter is now 20 years old, and although absolutely fine I thought I'd come up to date and try one of yours! Well just 30 hours of burn in time and I can hear the harmonics of instruments have changed, the sound is just even more believable. Voices sounds quite stunning and real. Inner detail is amazing! I'd like to think this is the filter design removing even more noise from the mains. Fabulous! I look forward to the next few weeks as it burns in even more! The combination of yours and the other various filters in my system could well be a match made in heaven!

Jonathan Carter | Epping | September 2024

Showing 1 to 5 (6). Page 1 of 2.

12
Next
MPN
nn SE QNC
Brand
fidelity audio
Condition
New
Product Code
No Noise SE QNC
Weight
2kg

6 Customer Reviews

No Noise SE QNC

Product Code No Noise SE QNC
VAT Number: 366988523 Registered company: 12998520
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