Linear Power Supplies - any improvement in sound?

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Re: Linear Power Supplies - any improvement in sound?

Postby rikardo1979 » 04 Jun 2016, 15:16

rastus wrote:
rikardo1979 wrote:if you want the best, get the R-core transformer. They are the best for this applications


Hi rikardo1979,

this is the same conclusion I'm coming to....

R-core have characteristics that are best suited for low level source applications. For dacs and source gear in particular, I'd rate them as follows in terms of suitability (from best to least):
•R-core
•EI core
•Toroidal

http://audiokarma.org/forums/index.php? ... cs.678546/

I was recommended by a friend the S130 is very high-performance. I need a dual unit for my system, DC5V (Raspberry Pi 2B) and DC12V (DSPeaker Anti-Mode 8033Cinema), so I am thinking of these two....

LT1038cp 2 way linear Power supply, using one 30VA R-core transfosrmer, each groups 15VA power.
http://www.ebay.com.au/itm/Finished-LT1 ... SwDNdV5xUC

ZEROZONE 2 way HIFI Linear Power supply
http://www.ebay.com.au/itm/ZEROZONE-2-w ... SwoudW6Pc1

Regards,

rastus.

those are nice u its for some applications but not for RPi. Those need more power and these have only 15VA transformers.
Check this one Look at this on eBay http://www.ebay.co.uk/itm/221873423925
Its not dual unit but it has 65VA transformer

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Re: Linear Power Supplies - any improvement in sound?

Postby dunghnguyen » 05 Jun 2016, 05:10

@rastus: for what I am aware, the transformers list for priority (best is first) should be:

R-core
Toroidal
IE isolated
Switching
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Re: Linear Power Supplies - any improvement in sound?

Postby rastus » 05 Jun 2016, 06:06

rikardo1979 wrote:those are nice u its for some applications but not for RPi. Those need more power and these have only 15VA transformers.
Check this one Look at this on eBay http://www.ebay.co.uk/itm/221873423925
Its not dual unit but it has 65VA transformer

OP2


Hi rikardo1979,

thank you for your feedback brother, I will look into that unit.

Regards,

rastus.

dunghnguyen wrote:@rastus: for what I am aware, the transformers list for priority (best is first) should be:

R-core
Toroidal
IE isolated
Switching


Hi dunghnguyen,

thank you also for your feedback brother. So maybe we should go with something like this then...

•R-core
•Toroidal / EI isolated
•EI isolated / Toroidal
•Battery
•Switching

Either way, we do seem to agree that the R-core is the better of them.

Regards,

rastus.
You are invited to participate in my new forum, Rastus' Rants: http://rastus.tk
Subjects covered: Hardware setup for the Raspberry Pi as a digital streamer. Digital music, artists and thier albums or CDs. More will be added in the coming weeks.
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Re: Linear Power Supplies - any improvement in sound?

Postby dunghnguyen » 05 Jun 2016, 09:14

I saw many audio devices especially the high-end ones, its supply unit went with toroidal transformer so the IE ones are lesser in the sense of high quality audio.

Some other experiments proved that a battery like this https://www.amazon.com/ExpertPower-EXP6 ... h-keywords that feeds a dc-dc step down board to supply a very good linear / purity source for the Pi. This is surely better the case of EI transformer.
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Re: Linear Power Supplies - any improvement in sound?

Postby rikardo1979 » 05 Jun 2016, 23:14

dunghnguyen wrote:I saw many audio devices especially the high-end ones, its supply unit went with toroidal transformer so the IE ones are lesser in the sense of high quality audio.

Some other experiments proved that a battery like this https://www.amazon.com/ExpertPower-EXP6 ... h-keywords that feeds a dc-dc step down board to supply a very good linear / purity source for the Pi. This is surely better the case of EI transformer.

very high end manufacturers like Audio Research use EI in top signature range.
There is an reason for it ;)
Image
Toroidal transformers are used cks they are easiest to make an more important they are cheapest

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Re: Linear Power Supplies - any improvement in sound?

Postby dunghnguyen » 18 Jun 2016, 01:17

@rikardo1979, @rastus: it is so surprised for me with the R-core I tried, the sound changed much better :)ImageImage
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Re: Linear Power Supplies - any improvement in sound?

Postby rikardo1979 » 20 Jun 2016, 07:49

dunghnguyen wrote:@rikardo1979, @rastus: it is so surprised for me with the R-core I tried, the sound changed much better :)ImageImage

nice to hear ;)
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Re: Linear Power Supplies - any improvement in sound?

Postby Tinitus » 01 Oct 2016, 22:54

Hi guys,

in the end it does not matter how you get the best (most noiseless) power. Someone has design a device in order to make SPS behave well:

https://www.kickstarter.com/projects/16 ... 15v-and-5v

Well thought out

Regards

Uwe
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Re: Linear Power Supplies - any improvement in sound?

Postby dunghnguyen » 02 Oct 2016, 09:42

Thanks @Tinitus for the share. At least it made me to be aware there is always the way to be better = life is going on..
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Re: Linear Power Supplies - any improvement in sound?

Postby pradeepkumar » 23 Mar 2017, 13:09

Thanks for sharing information
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