IF you feel that noisy radio frequencies are seeping into your hi-fi system and degrading its performance, the solution is quite simple – get an RF filter to clean things up for better sound fidelity. New UK outfit connected-fidelity has something to offer here, the simple-to-fit RF Blocker that comes in pairs and three hook-up options.
“RF noise, which includes both Electromagnetic Interference (EMI) and Radio Frequency Interference (RFI), is found everywhere in the home. This noise, of which major sources are mobile phones and WiFi, is picked up by cables, electronics and loudspeaker coils, where it interferes with the audio signal. Filtering out RF noise is an effective way to enhance audio fidelity,” the company’s press literature informs us.
“The RF Blockers are entirely passive and have no effect on the loudspeakers’ or the amplifiers’ performance specifications, hence the resulting improvement in sound quality does not come at the expense of other sonic characteristics. Expect an increase in musical coherence, improved clarity in the higher frequencies, a cleaner mid-range, tighter and less ‘boxy’ bass and a more open and spacious soundstage.”
The RF Blockers come with banana terminals, spade terminals or bare wires. They fit across your loudspeakers’ binding posts or amplifier loudspeaker outputs.
“The overall effect is of less confused musical details with a greater sense of space, clarity and presence.”
The units are designed to audiophile specifications, using high quality electrical components housed in a die-cast aluminium box acting as a Faraday cage, ensuring that no further RF interference is picked up to enter the audio chain. The short cables are multi-strand OFC copper, and the connectors are gold-plated.
The RF Blockers can be used with any wired amplifier to loudspeaker connection.
The options with with banana or spade terminals are £249 a pair, the bare-wire pair is £235; all are available now.