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The US Silencer


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Silencing mains noise

The Silencer is the first in our range of power conditioners and is a compact device that can be used in two ways. Its primary use is to 'silence' mains noise at source – common culprits are computers and computer peripherals (printers, scanners, monitors etc.); fridges; freezers; battery chargers for cordless phones and so on. Silencer is designed to simply plug in close to these sources of noise: plug one into the double wall socket that your fridge is plugged into, for example, and reduce the mains noise from it at source. Many customers use more than one around their homes, using the Noise Sniffer to locate and identify sources of noise.

The Silencer can also be used as an effective and inexpensive power conditioner – simply plug it in as close to your Hi-Fi or Home Cinema and create a 'quiet area' around it. Plugging it into a spare socket in your mains extension is ideal. Our X-Block power extensions automatically have the Silencer built in, which means you aren't using up a socket. Silencers are effective even if you are using our bigger Purifier power conditioners.

Reducing voltage spikes

In addition to being an effective mains conditioner, the Silencer incorporates our SuperClamp spike and surge protection to help reduce the effect of voltage spikes. They 'grab' the spike and reduce its intensity. In our opinion, high voltage spikes can raise the background noise level in amplification circuits which is why it makes good sense to try and reduce them.

To maintain their effectiveness, we recommend replacing SuperClamp components every five years. Any product with a SuperClamp can be returned to us for factory replacement of the parts at lower cost than buying a new product.

The technology

The Silencer has been designed to efficiently remove degrading mains noise. It works passively, meaning that they have none of the drawbacks of some other mains filters – drawbacks such as loss of musicality and reduced dynamic range. It is a broadband filter, effective at filtering over a wide frequency range. For the techies amongst you, it is a 'passive differential and common mode inductorless non-resonant harmonic filter'.

Because The Silencer is a passive filter, nothing needs to be connected to it for it to work. It simply needs to be plugged in with the socket switched on.

Money Back Guarantee

Don't forget! We are so confident in the performance of this product that it is covered by our 60 Day Home Trial with Money Back Guarantee. Buy the product and if you're not completely satisfied, you can return it within 2 months for a refund. For full details click here.


  • Compact, effective mains filter
  • Integral SuperClamp provides protection from spikes and surges
  • Dimensions: H:78mm W:50mm D:48mm
  • reviews

    The September 2013 issue of Hi-Fi Choice magazine features a new review of The Silencer. The Silencer has featured in our range for many years on the principle that it simply works - and 'if it ain't broke, don't fix it'. Clearly, Neville Roberts, reviewing, agrees as he has been using one himself for "several years".

    It's pleasing to see an established product like this receiving an up to date review, especially when it gets such an unequivocal recommendation: "These devices really do work as described".

    In Neville's case he found that The Silencer was even able to cure the annoying problem of clicking through his speakers. Having traced the cause of the problem back to his refrigerator he found that plugging The Silencer into a spare socket near to his system completely eradicated the issue.

    In terms of the effects of The Silencer on sound quality he notes the drop in background noise and improvements in levels of detail extracted from recordings - just what we found and the effects are a much more involving musical experience.

    All in all summed up as a "great product that won't break the bank".

    Magazine: Hi-Fi Choice
    Issue: September 2013
    Verdict: Hi-Fi Choice Recommended Product

    Customer Reviews
    Overall product rating 0 / 5