Linear Power Supplies - any improvement in sound?

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Re: Linear Power Supplies - any improvement in sound?

Postby ingohz » 14 Apr 2016, 08:19

Has anyone tried something like this? It looks good (and maybe sounds, too) - but is it worth the money?
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Re: Linear Power Supplies - any improvement in sound?

Postby rikardo1979 » 14 Apr 2016, 08:43

ingohz wrote:Has anyone tried something like this? It looks good (and maybe sounds, too) - but is it worth the money?

have not tried personally but is highly recommended by many HiFi and high end users.
There are discussions on ArtOfSound forum

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Re: Linear Power Supplies - any improvement in sound?

Postby ingohz » 14 Apr 2016, 09:33

Thanks Rikardo for pointing to the Forum. I have read the 10 pages superficially and it sounds as if it's for a Raspi with DAC, specifically the iPi-DAC+ worth a try.
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Re: Linear Power Supplies - any improvement in sound?

Postby rikardo1979 » 14 Apr 2016, 12:57

This suppose to be a top quality PSU but is a bit pricey
https://markgrant.co.uk/73-linear-power-supply

and this guy does really good extended reviews
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Re: Linear Power Supplies - any improvement in sound?

Postby PeteB » 14 Apr 2016, 15:50

ingohz wrote:Has anyone tried something like this? It looks good (and maybe sounds, too) - but is it worth the money?

Good for eliminating noise originating on the crappy AC power lines most of us have to use. But only a partial solution in this case (Pi+hat DAC). It does not help (or not much) with noise generated after the power supply, and at the Pi. The SNR at the line out is still worse than it could be.

A basic linear power supply with a shielded toroidal transformer, a good low-noise rectifier, regulator, and combination of bulk and low ESR electrolytic caps is hard to beat, but unfortunately, $$ unless you build it yourself.
Last edited by PeteB on 14 Apr 2016, 16:08, edited 1 time in total.
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Re: Linear Power Supplies - any improvement in sound?

Postby PeteB » 14 Apr 2016, 16:03

rikardo1979 wrote:... and this guy does really good extended reviews

I saw that, someone posted a link earlier this year, and I have seen some of his other reviews. I agree with him on the power supply (and most other things).

However, I am not sure about using conductive foam as a shield. Especially when you can make your own with a couple layers of copper foil, and plastic (so it does not short to the pins on the bottom of the DAC).

The basic problem is that Hans B. spends more on audio gear than other people do on a car or a house. So, duplicating his results is out of reach for most people.
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Re: Linear Power Supplies - any improvement in sound?

Postby rikardo1979 » 14 Apr 2016, 16:19

PeteB wrote:
rikardo1979 wrote:... and this guy does really good extended reviews


However, I am not sure about using conductive foam as a shield. Especially when you can make your own with a couple layers of copper foil, and plastic (so it does not short to the pins on the bottom of the DAC).


he actually said he tried it but the results were no good hence the proper linear PSU is the only way to really improve the sound of the DAC.
His English is not perfect so is my :D :oops: :lol:
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Re: Linear Power Supplies - any improvement in sound?

Postby PeteB » 14 Apr 2016, 16:33

rikardo1979 wrote:...His English is not perfect so is my :D :oops: :lol:
It is obviously better than your French (or my French for that matter, LOL) ;)
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Re: Linear Power Supplies - any improvement in sound?

Postby rikardo1979 » 14 Apr 2016, 16:52

PeteB wrote:
rikardo1979 wrote:...His English is not perfect so is my :D :oops: :lol:
It is obviously better than your French (or my French for that matter, LOL) ;)

thats what I saying :) I speak 4 languages but none is perfect :P even my native Slovak :D
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Re: Linear Power Supplies - any improvement in sound?

Postby ingohz » 14 Apr 2016, 18:39

Thanks guys for your opinions. I know the videos of Hans. Most of them are well-founded and comprehensible. DIY would also be a possibility. I actually want something that fits both the size and the cost of the RasPi. The PSU is meant for "HiFi 2" from my footer.

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