MCRU "The First" Mains Power Lead
MCRU "The First" Mains Power Lead Price range: £395.00 through £1,195.00
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Connected Fidelity – RF Blocker

Price range: £235.00 through £249.00

A wide-band radio frequency filter that increases audio fidelity.

The connected-fidelity™ “RF Blocker” is a simple to fit radio frequency (RF) filter array. It is supplied in pairs and there are three connection options – banana and spade terminals, or bare wires. They simply fit across the loudspeaker + and – input terminals (or amplifier loudspeaker outputs).

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Description

RF Noise

RF ‘noise’ (WiFi and all other radio signals) is picked up by all cables, electronics and loudspeaker coils unless perfectly screened against RF. RF does ‘interfere’ with the audio signal so filtering out RF noise is an effective way of improving audio fidelity.

The RF Blocker is entirely passive, has no effect on impedance or any other amplifier/speaker characteristics other than eliminating a broad spectrum of radio frequencies, both going into the loudspeaker from the amplifier and RF re-entering the amplifier’s circuit via the loudspeaker cable.

The resulting increase in audible fidelity is usually clear to hear as an increase in musical coherence, the high frequencies are clearer, mids cleaner, the bass tighter and less ‘boxy’, the sound stage improved. The overall effect is of less ‘confused’ musical details, getting you closer to the musical event.

As amplifiers and speakers are designed and built differently, the effect is slightly different in each amplifier / loudspeaker / loudspeaker cable combination, but there is almost always an audible improvement.

Suitable for use with all types of amplifiers (Class A, A/B, and D) and all types of loudspeakers and cables. They are not compatible with active loudspeakers.

The connected-fidelity™ RF Blocker is based on sound electronics principles. There is no ‘Angel Dust’ used in this product!

The RF Blocker is designed to audiophile standards

High quality electrical components are housed in a die-cast aluminium box acting as a Faraday cage ensuring no further RF interference is picked up to enter the audio chain. The short attaching cables are multi-strand OFC copper, connectors are gold plated.

Your audio system

The RF Blocker’s will work to a lesser or greater degree with all audio systems and the benefits will carry through to any further upgrades of amplifier or speakers or cables you may make in the future.

If you are bi-wiring, you can use two pairs of RF Blockers to maximize the benefits but one pair will also make an improvement. Experiment fitted to the bass terminals, then on the mid/treble and decide which option sounds best to your ears. We normally find it’s the critical 1-5,000Hz range (mid-range) that makes the most audible difference, but it is worth experimenting. It is possible to fit at the amplifier end of course.

Fitting instructions

Fit and forget – then enjoy the music.

RF Blocker Specifications

Wide band radio interference filtering for clearer audio

Designed and made to audiophile standards

Die-cast metal body

Choice of three connection options

IMPORTANT NOTE

This is not a mains or electrical power product. DO NOT CONNECT TO MAINS POWER.

Enjoy

Better resolved micro-details

Clearer musical sound staging

Deeper darker silence

Reviews

January 2022, Hi-Fi Pig

Mains Filters

Black Ravioli Groundworks MA

£3,499.99
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  • Only to be used with the supplied mains connecting cable
  • Dimensions: 266x151x60mm
  • Weight: 2.35kg
  • Made in Scotland
For an overview of what the Black Hole Concept can achieve: click here

Black Ravioli Groundworks SA

Price range: £3,499.99 through £3,500.00
  • 3 outputs
  • USB A, RCA, 6mm Spade, 4mm plug or HDMI with three 1 metre leads
  • Dimensions: 1288x151x60mm
  • Weight: 2.35kg
  • Made in Scotland
For an overview of what the Black Hole Concept can achieve: click here
Select options This product has multiple variants. The options may be chosen on the product page

CAD Ethernet Control

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The CAD Ethernet Control is designed to reduce unwanted high frequency noise on the Ethernet Network connection in audio and video equipment and will work with both streaming services (Spotify, TIDAL, Qobuz, etc.) and locally stored music files.

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The new CAD USB Control design resulted from our research and development of the CAD Ground Controls, 1543 MKII DAC and the many USB cables we have produced over the last 10 years. In our experience, reducing unwanted high frequency noise in audio systems significantly improves sound quality. The frequency of noise varies in every audio system and in each domestic environment – even the time of day on mains power. The USB Control reduces this unwanted high frequency noise across an extremely broad frequency spectrum, from KHz up into the GHz range. HiFi + Review

Connected Fidelity – RF Blocker

Price range: £235.00 through £249.00
A wide-band radio frequency filter that increases audio fidelity. The connected-fidelity™ “RF Blocker” is a simple to fit radio frequency (RF) filter array. It is supplied in pairs and there are three connection options – banana and spade terminals, or bare wires. They simply fit across the loudspeaker + and - input terminals (or amplifier loudspeaker outputs).
Select options This product has multiple variants. The options may be chosen on the product page

Ex-Dem Puritan Audio Laboratories PSM156 Studio Master Mains Purifier

Original price was: £1,550.00.Current price is: £1,200.00.
  • ONE ONLY EX-DEM FITTED WITH EU SCHUKO SOCKETS
  • SUPPLIED WITH 2 MTR PURITAN MAINS LEAD
  • NO OTHER OFFERS APPLY OR CAN BE USED
  • The PSM156 builds upon the brilliance of the legendary PSM136 retaining the precision symmetrically balanced circuitry and 6 fully independent outputs. Increasing the number of independently tuned filter elements from 39 to 52 enables your system to deliver even greater delicacy and detail whilst enhancing dynamics and punch.
The PSM156 will lift your system into a new dimension. Definition takes an enormous stride forward, individual instruments gain air between them with their sound and timbre becoming believable, the sound-stage will move out of your speakers and into the room with gains in three dimensionality with clarity definition and space between the instruments for them to interrelate rather than muddle each other. Your listening will become a far more engaging and pleasurable experience.

FURUTECH FLOW-15 PLUS IN-LINE MAINS FILTER

£285.00
The Furutech Flow-15 Plus Inline Power Filter effectively removes all of that high-frequency noise from the mains power before it reaches your components.

Furutech NCF Clear Line AC Optimiser

£290.00
It takes just a moment to hear the difference that Furutech’s NCF Clear Line can make to your audio or video system. Why just a moment? Furutech’s Nano Crystal² Formula, also known as NCF, has resulted in a number of truly innovative and effective products over the past few years. NCF features a special crystalline material that has two distinct properties—it generates negative ions that eliminate static, and it converts thermal energy into far infrared. When combined with nano-sized ceramic particles and carbon powder, these crystals become the ultimate electrical and mechanical damping material. Created by Furutech, NCF is found exclusively in Furutech products and nowhere else. Now, Furutech has introduced perhaps the simplest way to implement NCF technology into your home—NCF Clear Line. Mono and Stereo Full Review Here
Select options This product has multiple variants. The options may be chosen on the product page

iFi Audio AC iPurifier – Mains Audio/Line Conditioner/Filter/Isolator/Purifier (Single Unit)

£99.00
When you listen to music there’s a lot of background noise going on, coming in from the mains. Some noise cannot be missed but there’s also some that is not immediately obvious until it has gone. It comes from your power supply and interference and feedback from the power supply of other devices. Put the AC iPurifier in your set-up and you’ll notice the difference instantly.
Additional information
Weight 1.5 kg
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Connected Fidelity

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