X6 Block UK

4.9 out of 5
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  • Superb value, high-performance audio-grade mains extension

  • Features Russ Andrews UltraSockets™ treated with DCT and DeoxIT®

  • Internally wired with Kimber Kable® TCX™ cable

  • Incorporates Russ Andrews Silencer™ mains filter and SuperClamp™ for mains noise reduction

Why X Blocks™?

Designed and built by us, X-Block™ mains extensions use our superb UltraSockets™, are wired throughout with Kimber Kable® and are fitted with our Silencer™ mains filter and SuperClamp™ surge protection.

Bettered only by our Signature PowerBlock™, X-Blocks are our best value mains extensions and can be used in a vast range of systems; from a small CD/amp, to a high-end system comprising up to eight separate components.

X Blocks are hand built to exacting standards by our highly-skilled manufacturing team and are guaranteed* to provide a lifetime of listening enjoyment.

X Block features

  • 2, 4, 6 or 8 UltraSockets™. X Blocks are fitted with our superb, high-performance power sockets to ensure the very best connection. UltraSockets have a very high build quality and, for good measure, every UltraSocket is Deep Cryogenically Treated and treated with DeoxIT® contact enhancer.

  • Kimber internal wiring. We only use Kimber’s high purity TCX™ copper cable for wiring X Blocks. This ensures full performance is maintained throughout the block with minimum impedance – each socket is optimised so there’s no restriction on where high-power components can be plugged in.

  • Bespoke ABS anti-shatter casework. We use ABS because of its combination of strength, rigidity and acoustic neutrality. It also keeps the pound-to-pleasure ratio high too!

  • Silencer™ filtration. Each X Block is fitted with our highly-rated Silencer mains filter to reduce mains noise interference. It works passively, meaning that it has none of the drawbacks of many other mains filters – drawbacks such as loss of musicality and reduced dynamic range. It’s wide-band too, 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'!

  • SuperClamp™ spike and surge protection. SuperClamps not only offer protection for your system, they also bring sonic benefits by addressing minor spikes and surges that appear on the mains on a regular basis. In our opinion, these high voltage spikes can raise the background noise level in amplification circuits which is why it makes good sense to try and reduce them.

    We recommend factory replacement of all SuperClamp components every five years to maintain their effectiveness - click here to read more.

  • 10A IEC socket. X Blocks are fitted with a 10A IEC socket, allowing you to choose the level of mains cable you desire. We recommend a minimum of the Evolution-100 PowerKord™

  • Need more sockets?

    Click here for the X8.

    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.

    Upgrade Scheme

    You can upgrade to the X6 Block (and get up to 100% of the original cost of your upgrade back) from any of the following:
    PowerBar 6-way, PowerBar 8-way, all PowerLinks, all SilencerBlocks and all YellO extensions
    For full details of our Upgrade Scheme, click here.


    6 UltraSocket™ outlets, treated with DCT and DeoxIT®

    Wired with Kimber TCX™ cable

    Russ Andrews Silencer™ mains filter

    Russ Andrews SuperClamp™ surge filter

    10A IEC mains socket allows you to connect your choice of mains cable (not supplied)

    Impact and fire resistant ABS casework


    The 2, 4, 6 and 8 way Height and Depth dimensions of the X-BLOCKS are the same, only the length differs. The height includes the feet and sockets.Height: 65mm
    Width: 85mm

    2 way length: 165mm

    4 way length: 285mm

    6 way length: 405mm

    8 way length: 525mm

    Please note that X-Blocks do not include a mains cable - we recommend a minimum of our YellOPower and ideally an Evolution-100 PowerKord or better; click here for details


"By allowing your electronics to give their best, this mains block is worth every penny"

Read more about the What Hi-Fi review here

"will provide an enhanced performance for any hi-fi"

Read more about theaudiophileman.com review here

"worked very effectively, giving a smoother and more relaxed sound"

Read more about the Hi-Fi Choice review here

RR logo
Customer Reviews
Overall product rating 4.9 / 5
5 / 5

reviewed by Dave Matthews
01 Feb 2023
Yes, I recommend this product.
"Stop Being A Sceptic!"
I've had my X6 Block in my system for a few months now and I added a Powerkord Evo 500 which I had for Christmas, this combination is fantastic and if your system justifies it just stop asking the why's and wherefores and buy one! I was always questioning how a cable or extension can improves sound blah blah and just bit the bullet and tried, well there's no going back for me and I'll only be satisfied when all my components are connected with the Evo 500 Powerkords which I'll replace one by one, brilliant product and service!
5 / 5

reviewed by Kevin
25 Feb 2022
Yes, I recommend this product.
"5 Star Product"
I managed to get one of these X-Block 6 Socket Extensions during their Christmas sale, also with the Mains Zapperator. After being in my system now over 5 weeks now. The music is cleaner, crisper with a bit more punch but the most outstanding feature has been more on delivery of the sound stage, This has made a very pleasant and musical enhancement upgrade too my system and one that will not break your bank account. In fact I have been so impressed with these along with the excellent help and advice from the people at Russ Andrews and the unbelievable 60 days money back guarantee ( which I will not be using ) So much so that I have just now purchased the Power Purifier along with one of the Clarity Mains Module fitted to it. For those who are looking to upgrade their system without having to spend many thousands pounds, Talk to Russ Andrews first. I really don't think you could possibly go wrong doing this. I know that i haven't.........
Many Thanks to all at Russ Andrews
5 / 5

reviewed by JCW
27 Jan 2022
Yes, I recommend this product.
"I’M A Believer"
I’m a believer .Got a X8 and straight from the box I’m gobsmacked how much better it is than my previous mains block .More air , bigger soundstage ,more bass , more detail , more attack .My system is approaching £20000 I wasn’t expecting so much, Wait til its run in ??And 20% off .
5 / 5

reviewed by Rafal G
24 Sep 2021
Yes, I recommend this product.
"5 Star Block"
I’ve got it only short time (24hrs) . What I can say straight- I love what it does to the high frequencies- makes it sound smoother and there’s a big dose of pleasant delicacy- and that’s the reason I’m going to keep it. Also vocals sound very natural. Can’t say much about the bass as it was already really good in my system including the rel sub. I’m sure I don’t use the whole potential of the x-block because I still have YellO power cords , but even with them and only 24 hrs burn in so far, I can tell it’s going to shine much more when the power cables will be upgraded and after longer burn in time . I’m already happy because my system was a bit too bright and now it’s not bright but there’s some air it really got what’s best from the high frequencies in my system . Build quality is excellent- you can call it a component not a block as it’s size and look really is like another component in my system . I’ve received my block on the very next day.
5 / 5

reviewed by Emmet Harte
04 Mar 2021
Yes, I recommend this product.
"X 6 Times The Power Of My Old One"
I purchased the X6 to replace my perfectly good (so I thought) QED quonduit mdh-6. I was nervous, because of allready owning something quite simuluar - but boy was I wrong! This is amazing! The upgrade to every aspect of my viewing and listening pleasure, has yet again execeed my expectations. Great job Russ Andrews: I cant wait to purchase my next item.
5 / 5

reviewed by JOHN
14 Sep 2020
Yes, I recommend this product.
"The Best I Have Used And The Cheapest!"
I was looking around for a new Block as I had reconfigured my system. Decided to go for this X Block because of the great reputation of Russ Andrews and at the price compared to the competition it seemed a bargain. To say I am over the moon is an understatement. Overall sound quality has been raised and my system sounds much better all round. No audiophile words to use other than if you need extra sockets or just want to tidy up your system and feed it from one block, I highly recommend this X Block. Since buying the block i have added a Zapperator which has unbelievably raised the performance again. These Russ Andrews products to me are a no brainer they do exactly what they say on the tin and dare I say compared to the competition a bargain!
5 / 5

reviewed by Petcharat, Taweewut
09 Jul 2020
Yes, I recommend this product.
"Excellent Power Block"
I have the X6 in my Linn tri-amp active system for seven months, I like the way when I plug in the Ultra sockets, it is very smooth and quiet operation. I have the X6 connected with Powerkord 300, I just have upgraded the ground with RF router MK2. The overall comment in sound is big improvement in sound stage, more detail and defined bass. The X6 is an excellent power block.
5 / 5

reviewed by Sharp
14 Mar 2020
Yes, I recommend this product.
I spent so long trying to find a good mains extension and decided on this having been using a qed one for the last ten years and have no regrets, makes my system sound so much better, Sugden masterclass amp and Leema Antilla cd player, You will notice a big improvement
5 / 5

reviewed by David Warner
01 Dec 2017
Yes, I recommend this product.
"Quality Merchandise!"
My sister bought me an X6 a few months ago so i substituted it for my existing powerbar 8 in my home cinema set up. Straight away the bass was less boomy & a veil has been removed on the visuals. Found a preowned X2 on Russ’ site so i snapped it up for cd/ amp duties replacing a powerbar 4 & again much cleaner bass and bigger headroom. Love these X blocks
5 / 5

reviewed by John Halloran
24 Aug 2017
Yes, I recommend this product.
"An Unexpected Surprise"
Before this, I'd never looked into power cables / conditioners much, believing it to be a hype.

Well, I was wrong. The X6 is a pretty big upgrade. As others have pointed out there are big improvements in the bass, especially the low end which gets tauter and better defined. There's also across the board improvement in detail and placement, and the high end is extended, too. Added to this, things seem more accurate and fuller timbrally.

I thought I'd probably return this before I heard it. But no way, I'm keeping it!
5 / 5

reviewed by Neil
11 Apr 2017
Yes, I recommend this product.
"Pleased With X6 Block"
I have been considering an upgrade of my Naim Nait2/Arcam CD/Manticore TT, but having read Russ's views on the advantages of improving the mains supply and reading customer reviews, I decided to give the X6 and YellO power cord a try. I was of course a little unsure about spending a considerable sum of money on what my friends and family see as a bit of wire and some sockets. However I am more than happy with the improvements, the system has come alive ! The sound is so much more open and detailed, as a result I am spending more time listening to my music collection. Thank you Russ.
4 / 5

reviewed by Nathan
16 Mar 2017
Yes, I recommend this product.
"Clearer Sound"
HiFi is very subjective and what system you use and the environment it is in obviously play a big part too. I bought the X6 with a Powerkord 100. I was immediately very impressed with the build quality of the X6. In my circumstances, and after being well run in, there was no wow facter with the X6 but a noticable, but subtle, cleaner clearer sound. With upgrading my HiFi being a long term investment I was happy as the X6 has provided a solid, well made, foundation for further Russ Andrews products I have tried which have produced a bigger smile inducing jump in performance.
5 / 5

reviewed by Lynne
11 Feb 2017
Yes, I recommend this product.
"Great Sound"
The X block coupled up to yello power chord opens up more base and clear sound of my HiFi. Very pleased and Russ ANDREWS service is great and would use them again.
5 / 5

reviewed by John
22 Jan 2017
Yes, I recommend this product.
"Great Powerful ."
This X block is worth the money.it is very well made and the sockets when plugs in make a perfect connection. My Hifi sounds more solid and clear with a much better base depth I use naim cdx2 as my main source.
5 / 5

reviewed by Michael Feehily
11 Feb 2016
Yes, I recommend this product.
"Great Natural Sound"
Have used other mains products from other company's in the past .These product usually tend to restrict the upper & lower end of the sound ,not the x6. Allows your kit to work to its full potential with that trademark natural flow that Russ Andrews products produce.Use with a powerkord 100 or better to get the very best from the x6.