RuneAudio Forum

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.

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

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

R-core
Toroidal
IE isolated
Switching

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.

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