PowerBar S 4-way

5 out of 5
20% Off
PowerBar Review

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Save 20% on the 2, 4, 6 or 8 way PowerBar

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Need a cable? Purchase any PowerBar and you’ll have the opportunity to save 20% on a YellO mains cable. Choose your cable length from the dropdown menu above.

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Why PowerBar™?

If you have yet to upgrade the power to your Hi-Fi system, one of the easiest ways to do this is to upgrade the mains extension that supplies your kit. And our updated PowerBar is one of the simplest ways you can do it.

PowerBar™ is a great introduction to the benefits of an upgraded mains block. Whether your preference is Hi-Fi or Home Cinema, it's raw mains power that makes it tick - and the more efficient that supply, the better your system will perform.

PowerBar™ comes in a new, sleek anodised aluminium housing.

PowerBar™ is designed and manufactured to give you a highly efficient power source for your equipment. Some budget audio mains blocks use inexpensive filters to try and improve sound quality, but we've found that these usually have the disadvantage of taking much of the life and dynamics out of the music. In contrast, all our effort has gone into the quality of the construction and wiring of the block to provide as clean and efficient connection as possible.

PowerBar™ is also offered with the addition of SuperClamp™, one of our spike and surge protection units. Not only does this offer protection for your system but it can also improve its performance too, because there are minor spikes and surges on the mains much of the time. We recommend factory replacement of all SuperClamp components every five years to maintain their effectiveness - click here to read more.

PowerBar™ features

  • Your choice of 4, 6 or 8 high-performance UK sockets for a low impedance connection to the mains supply. Sockets have a tight grip and a positive ‘click’ when a mains plug is inserted.

  • Sockets are individually wired with high performance cable. No cheap busbars which can compromise the connection.

  • IEC mains input allows your choice of mains cable for connecting the PowerBar™ to the wall socket. We recommend the YellO™ Power mains cable as a minimum, or use a PowerKord-100™ – or better – for even better performance.

  • SuperClamp™ option helps to protect your system from mains spikes and surges.

  • Brackets fitted to PowerBar™ mean that the extension can be wall-mounted, if required.

  • Where can I use it?

    PowerBar™ is an ideal starter mains extension for any level of system. Its robust sockets mean that it is equally at home powering a high end system as it is a entry-level Hi-Fi or Home Cinema system - though we would always recommend our X-Blocks™ or PowerBlocks™ to get the best out of mid to higher-end systems.

    Russ on PowerBar™

    "A good quality extension block will use high quality components both in the wiring and the sockets to ensure that the current flows as efficiently as possible. The music benefits by becoming more musical, more dynamic with better bass and a wider, deeper soundstage. The PowerBar™ is a perfect choice if you’ve yet to upgrade a basic, DIY-store extension – partnered with a PowerMax Plus™, it’s a great way to improve your your system’s performance"

    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.


  • Extension is manufactured to BS5733

  • Wall/rack mounting brackets

  • SuperClamp™ option

  • Internally wired

  • Super Burn-in Lite™

  • 10A IEC input socket

  • Dimensions: the 4, 6 and 8 way height and width dimensions of the PowerBar™ are the same, only the length differs. Height: 46mm width: 59mm

  • 4 way length: 317.5mm6 way length: 442.5mm8 way length: 567.5mm

    The above lengths include the brackets.


    “for anyone upgrading from stock cables, especially if they own a budget to mid-priced system… yellO mains cables and PowerBar S extension blocks are a great option, which I thoroughly recommend”.
    Read more about the Hi-Fi Pig review here
    60 Day Money Back Guarantee
    PowerBars are covered by our 60 Day Money Back Guarantee: audition them in your own system for two months. Find out more.
    25 Year Warranty
    PowerBars come with a Lifetime Guarantee - this means we will cover against manufacturing faults and defects for a minimum of 25 years. Find out more
    Upgrade Scheme
    We offer up to 100% part-exchange value when you return your Russ Andrews PowerBar and upgrade to a new, higher quality, extension. Find out more.
    Customer Reviews
    Overall product rating 5 / 5
    5 / 5

    reviewed by Stefan Nagiel....
    04 Mar 2023
    Yes, I recommend this product.
    "Excellent Products...."
    Spot on for a simple Hi-Fi set up....I feel very comfortable and safe when using these....Many Thanks.
    5 / 5

    reviewed by Simon
    17 Jan 2023
    Yes, I recommend this product.
    "Powerbar S 4-Way With Superclamp"
    The Powerbar is very well made, when you plug something in there's a feeling of being properly connected to the mains. But if you are feeding the powerbar with a cable that's fitted with any of the new Wattgate IEC's, then you need to watch the video that Russ Andrews has provided as they are very tight, tighter than older Wattgates and anything else that's on the market, there is a knack of getting them all the way in, this isn't a negative mark, it's a positive as once they are properly in the fit is great.
    I'm extremely impressed with the results i am getting. Images on screen have taken quite a leap, more accurate contrast and light levels on screen, colours are so much better along with low level details and dark scenes have more information.
    Audio is better from every connected component i have, vocals, dialogue, instruments, even gun shots have more wallop, be it films or gaming.
    Absolutely fantastic...
    5 / 5

    reviewed by Paul
    10 Jun 2022
    Yes, I recommend this product.
    "Powerbar S4 With Superclamp And Yellow Lead"
    Glad I bought this. Very well made - feels solid and plugs slot in very positively. I am using this to connect Naim Uniti Star and Rega P6 with Neo Power Supply. It has made a noticeable improvement. Soundstage is more focused, bass is deeper, drums have more snap. A very worthwhile upgrade. This was all evident from the first so if it improves with burn in then it will be even better.
    5 / 5

    reviewed by Chico
    01 Jul 2021
    Yes, I recommend this product.
    "Powerbar S 4-Way With Superclamp"
    Fantastic quality power bar that contains the superclamp. This is by far the single most cost effective upgrade I have ever experienced in my system. It has an immediate beneficial effect on all HiFi components connected to it. My system sounds so much cleaner, sweeter and simply giving many hours of enjoyment. This is only from 20hrs use and hear more benefits until fully burned in. Brilliant product and service!
    5 / 5

    reviewed by Keith Gooden
    25 Jun 2021
    Yes, I recommend this product.
    "Powerblock 4 With Superclamp"
    Just received my power block from you and the deoxit.

    I had a great conversation with your staff member yesterday. I asked about a mains hum issue I had with my Quad Mk3 ( David Pritchard mods) with ESL 63s.

    Good tips from you which I followed . Such as powering the whole system from one socket. This decreased the hum but I have just received the power bar and plugged the Quad power amp in to it. The hum has all but gone! It does make a difference! I’m a skeptical audiophile having worked from a young age in pro audio, starting with Decca studios in 1976. But now with 61 year old ears! So I can taste snake oil a mile away.

    Thanks for your great service, speedy shipping and great product!

    Kind regards

    Keith Gooden
    5 / 5

    reviewed by anonymous
    22 Oct 2015
    Yes, I recommend this product.
    "Buy One"
    I know it's a cliche but this really is a no brainer, with my system plugged into this compared to my (decent) MK extension, the sound improved in all areas, bass tightened considerably, midrange sounds far more natural & expressive, & involving & this is just the block on it's own, i use a standard cable as i need 5m to reach the block so i imagine things would improve even further with a better cable attached.

    When i switched back (i know a/b tests can be expectation biased) but if you don't hear the improvement maybe it's time to give up on music or get a doctors appointment for a