Thx
Ive upgraded most of my power cords and havent heard a difference so i was dubious re: this guys claims
The power supply you got with the Nucleus is absolutely fine mate. Donāt spend another moment thinking other wise.
6 Likes
ā¦ which was to be expected ā¦
3 Likes
Save your money; original power supply (and cable) is fine - people claiming that they hear a difference will never be able to tell which one of the power supplies are currently being used - if they donāt already know. Do the same test with cables; āmagicallyā it will give the same result 
5 Likes
Agreeā¦rip on the nucleus supply and then recommend a $7000 power supply
He said āeven a deaf person could hear the differenceā
1 Like
Exactly, because deaf people can also hear if they pour snake oil into their ears. 
I am very happy with my Nucleus and its original power supply.
Keep listening and enjoy the music!
2 Likes
I donāt normally comment on cables/power supplies/switches etc. as, at the end of the day, people pay their money and make their choices. In this case though, it sounds like youāre on a budget and wanting advice. Like others have said, donāt spend your hard earned cash on a power supply. Ignore the videos, enjoy the music and spend the money on family/friends/pets/charities or copious quantities of alcohol. 
7 Likes
I donāt usually comment on this either and I also own a few cables myself that my system certainly wouldnāt have needed - but I couldnāt resist. Please, no one should take this amiss. 
4 Likes
Thereās no benefit in adding a fancy linear supply to a computer. A computer has internal switching supplies to derive the lower supply voltages needed for the various components.
People who peddle this kind of snake oil generally have little understanding of how these things work.
4 Likes
Itās this kind of marketing speak that riles me a little, and Iām not easily riled. Words should be chosen carefully and these obviously arenāt chosen to convey anything but a little āpeer pressureā to viewers. The obvious follow up should be a blind test that anyone will be able to pass with 100% success and certainly the presumably āgolden earedā reviewer.
3 Likes
This is one of the reasons why measurements are so important. If you canāt measure the effect of a power supply change at the audio output of a device, then it doesnāt add any benefit.
Some power supply changes have been known to make matters worse.
Power supply design is not trivial. I honestly canāt think why a manufacturer would purposely choose a power supply which limits the capability of one of itās hi-fi components, excepting of course those who specifically sell āupgradedā power supplies as later add-ons to already pricey gear (e.g. Naim)
4 Likes
Iāve commented on this before, but to reiterate, Iāve got an HDPlex LPS powering my Nucleus and DAC. I couldnāt hear a difference. If youāre buying an LPS expecting an improvement in sound quality, donāt. If youāre buying it for other reasons, the HDPlex is quite nice.
2 Likes
Are there any other reasons someone would choose to spend extra money on a LPS? Bigger, heavier, less efficient than a SMPS. No guarantee of greater longevity.
Thereās a deeply entrenched belief in the audio world that a LPS is somehow ābetterā than a SMPS. Itās 2022 - thatās simply not true anymore. There are many audio devices achieving state of the art performance and audible transparency with SMPS powering them. In fact, there are many reasons not to choose LPS - magnetic coupling of 50/100 Hz or 60/120Hz hum into the audio chain being one of them. Voltage ripple at the twice the mains frequency too. With SMPS, the switching frequency puts the noise well above the audio frequency band.
Wound transformers can hum, toroids especially will suffer from core saturation and hum if the mains is not completely symmetrical:
3 Likes
Iām looking for a LPS. The SMP supplied with the Nucleus+ is very noisyā¦ especially when not under load i.e. Nucleus+ powered off. I can hear it across the room with its high pitched oscillation noise. I was surprised at how cheaply made it is considering the price of the Nucleus. Most cheap Chinese SMP power adapters are pretty goodā¦ but this one is awful. The DC cable length too is pretty random.
I want an LPS that doesnāt have loads of branding all over the front of it and looks close to OEM as possible (or at least discrete/blends in). DC3 might be the oneā¦ Many moons ago, I heard Roon were making their own but that idea seemed to disappear. Would have been nice to have a smaller but maybe higher case that matches the existing Roon case design. I think they missed a trick with this one.
1 Like
Sounds like some poor QC, me, Iād send the power supply back to Roon or walk into my dealer and say new one please. I have always had decent results with any of the Amazon Basics power supplies for my electronics.
1 Like
Hereās some reading and even measurements of what a crappy quality SMPS can do in your setup:
For something like Nucleus Iād probably select a good quality medical grade SMPS by Mean-Well or similar respected manufacturer. I use Mean-Well SMPS for my QNAP NAS.
Buy version with Talema and LT3045.
Purchase DC cable from Ghent Audio with JSSG360.
https://www.ghentaudio.com/part/dc-gac4.html
I have used a 12 volt linear power supply on my Roon Nucleus Plus and found the result sounded quite poor. Sounded more detailed at the expense of midrange and bass. Orchestral textures were washed out. The standard 19v switching power supply was far better.
12 volt supply? My cheap Chinese 19 volt LPS sounds better than stock when I use the NUCās HDMI for multichannel.
1 Like
But thatās a DAC with an analogue output. The Nucleus is a networked device, unless youāre going to connect a DAC to it via USB. Power supply quality is of no real significance so long as it meets the required voltage/current spec.