AUDIOPHONICS LPSU25 Linear Regulated Low Noise Power Supply USB 220V to 5V 2A 25VA - reviews - There are 56 reviews.

works wonders on my digione
I replaced the stock power supply of my digione+raspberry pi with this one. Very big improvement on the sound, sound much more clear and tight bass. My streamer now sounds like a high end streamer.

Stable & Low Noise
I ordered one of these supplies to evaluate as I needed to replace some switch mode supplies in my system. The regulation is fine and there is no appreciable electrical noise from this supply. I have ordered another of these based on the performance of the first one. This is the first time I have dealt with Audiophonics, they delivered quickly and gave several email updates regarding the progress of my order. Very satisfied new customer, thanks.

C'est le top !
DAC ISabre ES9028Q2M, avec le reclocker Kali et l'alim linéaire régulée, cable Mogami 3104 en bi-cablage sur des Tannoy D700. C'est le top.
Je n'aurais jamais cru que mes CD étaient aussi bons.

Oggetto ben fatto come da presentazione.
Ditta seria, e consegna molto veloce pur abitando in Italia.
Maurizio

Now I'm a believer! :-) :-D
I did not measure the performance or ripple but I think that the sound quality improved: the piano sounds better.
I think I can hear the differences to the original (Allo) power supply even if I do not have high-end equipment.

I like the front and rear USB sockets and the surface finish.

I would have preferred a slightly harder power knob and a stronger feed-back but this is really not important and has something to do with the personal expectations.

The delivery to Germany was very fast.

My conclusion: excellent power supply.
Would I recommend it to my friends? - Yes!

perfect sound
It took long to decide which DAC I should buy, finally I ordered also the AUDIOPHONICS Linear Regulated Low Noise Power Supply USB 5V 3.5A 25VA and in just 5 minutes the setup was playing.
I am really surprised that a DAC can do so much in the sound on the same setup.
So the source is indeed the first important step.
At this price a big improvement over the HiFiberry DAC+ Pro

fait le job
je l'utilise pour le pasptouch digione
j’ai augmenter le voltage par la vis du potentiomètre a l’arrière

parfait
Effectivement il y a du changement dans le son ; grave plus tendu et aigu plus distingués
Il y a même une petite vis à l'arrière du produit qui permet de régler la tension