MCRU No. 79 Mains Power Extension Hub

Anyone tried one of these? Any good? Does the filtering they mention affect the SQ?

I’ve had a number of different power blocks and my experience is that the filtering really does impact the SQ. I would recommend getting something without this. My system sounds a lot more relaxed and natural with just a simple block. Hope that helps.

Yes, that’s my concern. But they don’t really explain what the filtering consists of. So I’m hoping someone has tried one and can tell me what they thought of it.

Indeed! I may just give up looking for something decent and affordable and just make up my own. I may just put together a kit of parts and post here to get feedback before I DIY one.

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IMG_4310

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I can certainly recommend this approach as a recent convert who has previously spent lots of money of power blocks :+1:

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@Skeptikal have you also made your own power cords or replaced the Naim ones with MK plugs?

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@What_Are_You_To_Me
Yes indeed. :+1:t2:
MK tough plugs
Bussmann 13A fuses
Doncaster 3 Core Rubber Flexible Cable
3183TRS 1.5mm2 Black
IEC Connector c13 10a Martin Kaiser 794
All terminated with ferrules to stop terminal screw pinching split on multi strand.

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Nice, I thought so but wanted to ask anyway. I have plenty of Doncaster left so I am going to try this as my next project and compare against the very expensive cables I currently have. I think the use of ferrules is the biggest thing I have learned about getting a pure connection. When building my DIY Furutech cable I terminated the cables directly into the Furutech plug. I unscrewed it today and they were a mess with many strands not actually in contact with the plug…I will report back in due course :+1:

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@MrFixit I have one, though I’m not sure if I will be much help! It coincided at a time when I was changing around a lot of things, so I can’t honestly say if it will be worth it or not. I do notice an increase in bass but as an overall improvement, Im not sure?

What I need to do is do a direct comparison with an old cheap one that I have, which by the way I never have done! Your post has spiked my interest so I will do that and report back.

By the way I do like the approach that Mr @Skeptikal has with such matters :slightly_smiling_face:

If you are able to do a comparison that would be great.

I’ll admit though I’m becoming more inclined to just roll my own armed with information from this site courtesy of @Skeptikal and others.

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No problem, I will do.

I have to say that I am tempted to have a go at a @Skeptikal special too!

Where you tempted by the silver plated c13 plugs or did you stick with the plain option .
Need to make up a couple of leads so might try your recipe :joy:

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There are many ways of doing this.

Although it looks like a dedicated mains, it is in fact, an extension box going into six sockets from a 13 amp plug. (Initially was four double sockets, but as the box count increased, so did the number of sockets. Used this prior to them being wired in with a dedicated radial mains.

Also have made my own power leads.


Like @Skeptikal, fairly easy to do, but I always test my sockets with a socket tester and leads with a PAT Tester, just for belt and braces.

DG…

@silverback
Hi
Never tempted to try anything other than the same metal that mates in the socket.
Everything else wears off anyway “ rippoff “ the only thing you want to scrape off is any dust on a plug and unplug wipe occasionally
Minimises variables too. :+1:t2:.

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Hi
Interested in whether you kept to the original Naim length.
I could really do with shorter leads to tidy up cable dressing. Inclined to make some bespoke lengths?

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Hi @Mikee
I made my cables 1.5 metres I did try one at a metre but was a pain in not giving movement for access.
1.5 is my magic number. :+1:t2:
I don’t know the Naim length as my Lites are in the boxes unused.

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All my cables are custom made lengths, wall to dist board, dist board to each Naim unit.
Plus each DIN-DIN and even the Burndy.
My only original cables are Naim PL Lites, I have these folded to length wrapped with Velcro, the only reason is to preserve resale value.

I once spent time testing for sound changes with different lengths, and with my equipment on my house power, I could not hear much if anything different. Unlike changes with different cables, conductor sizes and materials.

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I realised a while back, that if you take Furutech as an example, they sell the mains flex off the drum and they sell the plugs. If you pick the cable you want and then just buy the cable and the plugs and make your own, you save a packet.

I go for a mixture. On my Naim and Luxman gear I just use the Naim and Luxman cables with a Furutech pro-audio cable to the mains block, not one of their audiophile range ones. For my other lesser systems like the AV system, subwoofers, kitchen system, then I buy entry level Furutech plugs (either gold or bare copper variants to match the mains outlet), but buy heavy flex and a decent non LED mains block for next to nothing at the hardware store and make my own mains leads and modified mains blocks.

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