Linear Power Supply recommendations

I’m not french, but I’ve checked router and TV box power connections and they are “standard”. So it would be no problem to connect linear power supply.

Seems that Hdplex is really good choice, because I found more people mentioned it as good power supply (in other forums).


Thank to everyone for suggestions.

The HDPlex range of power supplies are currently difficult to order, either via a retailer, or directly on the HDPlex website. These LPSU are well reviewed elsewhere.

I’ve put linear power supply’s on my modem / Cisco 2960
All made a noticeable difference the ones I used came from Israel.
Very happy with them.

Hi Luc,

As no-one has mentioned them:
The King of LPSU are reputedly the Paul Hynes, with the SR7 being the top of the heap; when I last looked there was a ten month wait.

If you go over to Audio Bacon they did an excellent in depth review of some of the best known LPSU.

An issue with the Chinese LPSU is that they don’t have the proper safety certifications.



That’s probably something that falls outside of forum AUP.

If you’re thinking of a linear power supply to replace the wall-wart SMPS then I would strongly advise you only buy kit that is from a known supplier/maker and is compliant with safety regs.

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I use a hdplex 200w, as I wanted an easy way to power a Lumin streamer, RME DAC and network switch from one outlet and remove smps supplies from my hifi spur.

It has 4 outputs, 2 of which are adjustable which makes it a very flexible solution, and to me the system sounds great


I have used 2 chinese sub £70 lps for both roon nuc and wd mycloud…for me made a really big difference.

I found this excellent…

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I’ve just recently purchased a Keces P3 , it powers both my Linksys switch and my Synology NAS. What was appealing is that I could connect two devices. The P3 comes in multiple configurations. I have a 5V switch and a 12V NAS. I tested first with just the NAS and then connected the switch. Made a nice improvement, improved the dynamics and revealed some things in my music that I have never heard before. I’ll eventually get a Nordost Red Dawn power cable for it to match the cables on my 272 and 250. Definitely worth checking out.

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EU Safety standards, guarantee, Q control. You pay for what you get couldnt be truer in this case as in so many.
The IFI SMPS and FRIWO gives a superb upgrade in SQ without the risk of buying often sub-standard electrical goods and they are just as cheap if not cheaper.

My IFI SMPS was a clear box upgrade for 50.00 only. I couldnt believe the uplift in SQ with it and i wrote about it a while ago on this forum. The active noise cancellation in the plug leading to a noise free system was a bonus too. Im further gonna improve SQ by earthing the DC leakage and using a 75 mix ferrite on the cable too.
Amazing VFM upgrade.


Hi. I’ve read some reviews about Paul Hynes. It seems their LPSUs are very expensive. In my case I just want to experiment with mid-priced LPSU to check If I’ll see difference at all.

But thanks for suggestion. I collect all the information from this thead and I’ll possibly use some of the suggested LPSU’s in the future upgrades.

Hi Luc,

No problems.

This is a rabbit hole I dived deep into. Over the time I was doing this I primarily used LPSU from SBooster and ZeroZone, although I have others.

I found the chains are remarkably sensitive to change not only twixt network and DAC but within the HiFi itself AND in the server.

Ultimately I found that the dCS Netwrok Bridge sounded as good as my network of widgets and was FAR neater, although at a price premium.

I ended up trying a Linn Klimax Renew DS/1 which reduced my box count even further, and have happily been simply listening to music since; especially as it is inured to any backend fiddling.

The only place I use an LPSU today is on my HiFi ring main, where I have no cheap noisy SMPS.


But, it is intellectually very stimulating.

Good luck.


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There is no particular majic to LPS design…simple chip regulator with good smoothing capacitors…and ancillaries…and away you go … some mains input filtering helps…these have it built in. Look closely at the booster…its not a whole lot different. The only way to substantively improve things is to use one of those American super regulator chips…which has close to DR levels of noise rejection.

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Not agree here. I tested the Israeli one, hdplex, and Uptone js2. On the unitserve, the Uptone sounded clearly better.
However, to power a little switch, the differences are less pronounced, but still there.

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I‘ve noticed that some LPSUs have regulated voltage. Some of them have small LED screen with voltage number. Voltage can be adjusted, for example 12V, 19V, 24V… It is very convenient if you want to experiment by powering different devices.

Does anybody know, are they the same quality as unregulated voltage LPSU‘s? They should have some extra circuit for voltage regulation and maybe this can (possibly) worsen sound quality.

I think you may need to differentiate between regulated and adjustable. The former ciuld improve performance while the latter ciuld degrade while, however, improving versatility

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I also have a Keces P3. I use the 5V output for a Network Filter and the 12v output for a Lumin L1 NAS. I also bought upgraded cables to connect the P3 to the devices.

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