Fidelity Audio Hifi Upgrades

No Noise HF (High Frequency)

£112.50 (ex. VAT)
No Noise HF (High Frequency) Mains Purifier
  • Improved with 5 poles of articulation
  • 2 Package option -
  1. Standard HF Filter Case
  2. Bare Wire DIY Version

The No Noise HF filter is designed to work in conjunction with our other filters by filtering out much higher frequency noise such as RFI. RFI noise operates in the 100kHz to 2.4GHz band which may interfere with Audio equipment, TV’s, computers and other electrical equipment.
  • Start stop timing of instruments are improved
  • Designed to work in conjunction with our other range of filters
  • Reduces High Frequency noise such as RFI
  • Operates @ 5 different frequency points
  • 2.4Ghz , 1Ghz , 500Mhz , 1Mhz & 100Khz operating region
  • Removes high frequency hash from the local mains (where unit is fitted)
  • DIY Box Dimensions - 54 x 36 x 22 mm

RFI Noise Reduction

Reducing RFI (Radio-frequency Interference) noise using filtering technologies presents significant design challenges. Since high frequency energy can “jump” around components and travel along leads, audio equipment and televisions suffer as this energy reached the delicate circuits.
Correct Filter Application

An RFI filter will be most effective when installed correctly. Although the filter reduces noise on the power lines (conducted emissions), it should be located as close as practical to the audio / tv equipment to reduce broadcasting of the noise (radiated emissions) from the power lines themselves. Noise is shorted to ground through a resistor-capacitor network.

Installation Note -
Live - Yellow wire
Neutral - White wire

nn hf diy
fidelity audio
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