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No Noise HF QNC (High Frequency) filter
No Noise HF QNC (High Frequency) filter
No Noise HF QNC (High Frequency) filter
No Noise HF QNC (High Frequency) filter

Product Description

No Noise HF QNC (Very High Frequency) Mains Purifier
 

#3 We recommend this as your 3rd choice of filter from our range as it is designed to supplement much higher frequencies the other filters do not reach but works with them.

Moving our filters into a new field of technology we have developed the Quantum Noise Conditioner. We have incorporated our Quantum Pulse Generator circuit in conjunction with our the N0 Noise HF filter.

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

The Fidelity Audio NN HF QNC Mains Filter is designed with 32 filter points housed in a custom case.

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

  • Start stop timing of instruments are improved
  • Quieter background / noise floor
  • Designed to work in conjunction with our other range of filters
  • Reduces High Frequency noise such as RFI / EMI
  • Operates @ 32 different frequency ranges
  • 1Khz ---> 13Ghz operating region - See below
  • Removes high frequency hash
  • High Quality Duelund DCA12GA tin-plated copper multistrand cable fitted internally
  • Uses the latest technology (rapid response high current) clamping components - Option
  • Inductorless non-resonant harmonic filter
  • Ideal for larger Hi-Fi or Home Cinema systems with four or more components
  • LED power indication
  • Dimensions – 221mm x 176mm x 58mm (LxWxH)
  • DC resistance (LN) – 200 Kohm approx
  • Consumption – 1.2 watts max
  • Weight – 1.10 Kg
  • Voltage 100v to 250v ac
  • Power cable not supplied outside of UK. 0.5m or shorter recommended

Frequency points



Please note - Please allow 500 hours minimum burn in time.

 

Specifications

MPN
nnhf qnc
Brand
fidelity audio
Condition
New
Product Code
No Noise HF QNC
Weight
2kg

Customer reviews

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

A quick review on the NNX HF QNC filter

I went down the route of getting the NNX HF first, which if you see my previous review, is very impressive in it own right.

Brent has discovered a way of getting similar if not more performance out of the NNX HF with a QNC board instead of the old SE version (which had two boards of 32 capacitor frequency points).

From a customer point of view, the QNC board is an excellent development as it gives more performance and costs less.

I seem to be getting additional benefit from the QNC board, as it seems also to have improved my other box filters by being in close proximity.

The main points were covered in the original NNX HF review. The QNC board takes it to the next level dropping the noise floor even further, letting all aspects of the music come through with some serious(balanced) presence, discovering aspects in the music you hadn’t appreciated before.

Well worth investing in. You get improvements you wouldn’t get with other means.

Chris Dixon | Bristol | March 2025

No Noise HF QNC (Very High Frequency) Mains Purifier
 

#3 We recommend this as your 3rd choice of filter from our range as it is designed to supplement much higher frequencies the other filters do not reach but works with them.

Moving our filters into a new field of technology we have developed the Quantum Noise Conditioner. We have incorporated our Quantum Pulse Generator circuit in conjunction with our the N0 Noise HF filter.

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

The Fidelity Audio NN HF QNC Mains Filter is designed with 32 filter points housed in a custom case.

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

  • Start stop timing of instruments are improved
  • Quieter background / noise floor
  • Designed to work in conjunction with our other range of filters
  • Reduces High Frequency noise such as RFI / EMI
  • Operates @ 32 different frequency ranges
  • 1Khz ---> 13Ghz operating region - See below
  • Removes high frequency hash
  • High Quality Duelund DCA12GA tin-plated copper multistrand cable fitted internally
  • Uses the latest technology (rapid response high current) clamping components - Option
  • Inductorless non-resonant harmonic filter
  • Ideal for larger Hi-Fi or Home Cinema systems with four or more components
  • LED power indication
  • Dimensions – 221mm x 176mm x 58mm (LxWxH)
  • DC resistance (LN) – 200 Kohm approx
  • Consumption – 1.2 watts max
  • Weight – 1.10 Kg
  • Voltage 100v to 250v ac
  • Power cable not supplied outside of UK. 0.5m or shorter recommended

Frequency points



Please note - Please allow 500 hours minimum burn in time.

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

A quick review on the NNX HF QNC filter

I went down the route of getting the NNX HF first, which if you see my previous review, is very impressive in it own right.

Brent has discovered a way of getting similar if not more performance out of the NNX HF with a QNC board instead of the old SE version (which had two boards of 32 capacitor frequency points).

From a customer point of view, the QNC board is an excellent development as it gives more performance and costs less.

I seem to be getting additional benefit from the QNC board, as it seems also to have improved my other box filters by being in close proximity.

The main points were covered in the original NNX HF review. The QNC board takes it to the next level dropping the noise floor even further, letting all aspects of the music come through with some serious(balanced) presence, discovering aspects in the music you hadn’t appreciated before.

Well worth investing in. You get improvements you wouldn’t get with other means.

Chris Dixon | Bristol | March 2025

MPN
nnhf qnc
Brand
fidelity audio
Condition
New
Product Code
No Noise HF QNC
Weight
2kg

1 Customer Reviews

No Noise HF QNC (High Frequency) filter

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