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Shanti Dual LPS 5V/3A , 5V/1.5A (by allo)
#1
       
Hello ladies and gents.

Music and linear power supply has been always a good match . The main problems of LPS is extremely inflated pricing and no data.

You see not all LPSes are equal . Just using a transformer will not automatically give you a better PSU. Worst is that most of manufacturers include no testing . no data that can help chose one.

We mean to change that.

First we started with the transformer . There are many types of transformer , some are worst than others (noise coupling , electromagnetic interference)

We chose one of the best transformers for noise ,r-core

The transformer has a dual output (galvanically isolated ) so you can power multiple devices (RPI + dac , Katana , etc) and we used independent (of course since they are isolated) filtering on each rail. First a capacitance bank (massive) to reduce the 50/60Hz noise , then a active filter , fallowed by an LDO to keep voltage stable . Since LDOs have poor transient and impedance , we used a last active filter (with good transient) and then capacitance but most importantly , super capacitors on the output . So all power comes in fact from supercaps..So yes , transients and impedance of the LPS is..good.

Of course , Shanti includes AC line filter and AC is earthed to casing.

A few words on what we achieved . Measuring noise (in real word scenario) we see about 80nV (0.08uV of noise from 0-20Khz at the floor of our AP machine. This is comparable to batteries from our internal testing .

As explained , Shanti is not only shining because of the ultra low differential noise, but also because of incredible low impedance / deep reservoir of electrons at the output of the PSU ( thx you soundcheck for your suggestions )

At last ... pricing . We are working very hard to make this LPS the lowest priced on the market . All components are on the way , it will take a few weeks to start accepting orders. Questions and comments are welcomed.
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#2
I want one of these. Please provide them to the USA.
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#3
(09-23-2019, 12:57 AM)Lizard_King Wrote: I want one of these. Please provide them to the USA.

They have:
https://www.allo.com/sparky/shanti.html
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#4
(09-23-2019, 01:25 AM)HemiRick Wrote:
(09-23-2019, 12:57 AM)Lizard_King Wrote: I want one of these. Please provide them to the USA.

They have:
https://www.allo.com/sparky/shanti.html

Available here (USA)

 https://chicagodist.com/collections/allo...-noise-psu


  I think they will have it soon in stock
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#5
(09-23-2019, 03:04 PM)allo.com Wrote:
(09-23-2019, 01:25 AM)HemiRick Wrote:
(09-23-2019, 12:57 AM)Lizard_King Wrote: I want one of these. Please provide them to the USA.

They have:
https://www.allo.com/sparky/shanti.html

Available here (USA)

 https://chicagodist.com/collections/allo...-noise-psu


  I think they will have it soon in stock

Hi

i have one

very satisfied of it
signature works very well and no battery point!

pierre Smile
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#6
Looking to upgrade psu for Allo DigiOne Sig. At the moment I am using rpi 3 wall wort and a monoprice power bank. Doesn't seem the LPS does meet the power requirements of both the DigiOne signature and Rpi 3. 
 
 https://www.monoprice.com/product?c_id=3...1&format=2

Would like feedback from others that upgrade from a similar power setup as mine to the Shanti. Thank you
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#7
(10-08-2019, 05:52 PM)Onionhead Wrote: Looking to upgrade psu for Allo DigiOne Sig. At the moment I am using rpi 3 wall wort and a monoprice power bank. Doesn't seem the LPS does meet the power requirements of both the DigiOne signature and Rpi 3. 
 
 https://www.monoprice.com/product?c_id=3...1&format=2

Would like feedback from others that upgrade from a similar power setup as mine to the Shanti. Thank you

The trick is to avoid introducing too much noise on the clean input of the DigiOne Signature. Using 18650 Lipo batteries accomplish that. A power bank on the other side - it really depends on the brand and how well the power bank is made, but almost all of them, have switching elements which isn't going to help feeding low noise power. Some are very low noise, but most aren't.

I used the stock Allo PSU 5v for 3A, and tried stock Allo PSU 5v, battery pack (6-7v) and iFi iPower for the clean side. The iPower was definitely an upgrade over the using a normal Allo stock PSU for the dirty clean side. For daily radio/pop listening I found that the iFi iPower did a decent job in my setup. (The hassle of switching and recharging batteries makes the family acceptance factor low compared to the small drop in audio quality)

The Shanti performs as well as the battery pack. The Shanti is from my perspective the same listening experience as Allo stock PSU for dirty and Lipo batteries for the clean side. A bit expensive upgrade from battery pack, but well… 

But back to your question.

The Shanti is recommended by Allo to the DigiOne Signature:
https://www.allo.com/sparky/digione-signature.html (look at the red text under discount add-ons) 
"*We recommend Shanti Ultra low noise dual linear PSU for your DigiOne Signature, and above you get it at a discount."
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#8
@ksone - Thanks for your feedback and pointing out the recommendation from Allo. Not sure they will offer a discount on a Shanti a year after purchase but will ask. Given your experience with iFi Ipower and battery pack shelling out $'s for the Shanti might not be the best way to spend $160 bucks. Maybe put it toward the USBBridge Sig.

BTW to raise the FAF the power bank I use has an a/c side which I keep plugged in to mains. Thanks again
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