I am looking for a recommendation on a good PSU build for my Hifiberry Dac I will be using as a Roon bridge device. In the past, I used the IFI iPower Wall wart and it sounded fine, but wanted to experiment with a new linear power supply device I could build or buy from DIYAUDIO.
A couple ideas I had:
Or I can buy one fully built online, but what is the fun in that?! Any help is appreciated.
A couple ideas I had:
- Silent Switcher V3
- Super Regulated Power supply (I have the boards already and can use one)
- Jason Keutemann's Capmx board (I have one of these fully stuffed)
Or I can buy one fully built online, but what is the fun in that?! Any help is appreciated.
I don't have any experience with any of the psus you mention but would imagine and of them would be an improvement.
Feeding 5v into thr Dac+Pro then gets regulated to 3v3 by U2. If you fancied getting hands on you could set your psu to 3v3 and bypass this onboard reg. May give another step up.
Also I believe AVDD rail for the DAc chip and the 3v3 for the clocks comes from the Rpi gpio. Not the best. You can cut some traces and feed a separate rail here for added goodness. See this thread for some interesting modifications. Seems just adding some low esr caps can really help.
https://www.diyaudio.com/community/threads/hifiberry-dac-pro-hw-mods-anybody.285811/
Feeding 5v into thr Dac+Pro then gets regulated to 3v3 by U2. If you fancied getting hands on you could set your psu to 3v3 and bypass this onboard reg. May give another step up.
Also I believe AVDD rail for the DAc chip and the 3v3 for the clocks comes from the Rpi gpio. Not the best. You can cut some traces and feed a separate rail here for added goodness. See this thread for some interesting modifications. Seems just adding some low esr caps can really help.
https://www.diyaudio.com/community/threads/hifiberry-dac-pro-hw-mods-anybody.285811/
Regarding Silent Switcher, I would not power it with a wall wart supply because wall wart SMPS can produce noise on the ground at a few MHz that can then affect dac performance. Silent Switcher does not isolate output ground from input ground, so it offers no protection against the problem. Running Silent Switcher from an analog 5v power supply is IME a cleaner option.
I power my RPi and Allo Digi+ with a Sigma 11 from AMB labs. I want to think it made a nice improvement.
The Shanti PS from Allo is quite the device as well.
The Shanti PS from Allo is quite the device as well.
I made : http://dddac.com/dddac1794_power_supplies.html with a 50VA 9V transformer and 4x BYW29E-200
to power a Raspberry3B+ and Hifiberry HD DAC
to power a Raspberry3B+ and Hifiberry HD DAC
I use these LT3045-based ones from DIYinHK: https://www.diyinhk.com/shop/audio-...e-dac-power-supply-regulator-3357v-14ax2.html
You get two in a package, which you can either bridge to get 2A output or use separately, which is what I did with an IsolatorPi to get a dirty and clean power side.
I like the fact that it's got Murato EMI filters. For my RPi 3B+, they run hot but stay within limits.
Then for my dam1121 DAC I used a Sigma22 from AMB. You'd only need the Sigma11 I guess.
You get two in a package, which you can either bridge to get 2A output or use separately, which is what I did with an IsolatorPi to get a dirty and clean power side.
I like the fact that it's got Murato EMI filters. For my RPi 3B+, they run hot but stay within limits.
Then for my dam1121 DAC I used a Sigma22 from AMB. You'd only need the Sigma11 I guess.
On my DAC+ a separate linear power supply had no further effect on the sound. The most effect had adding good electrolytics on the 5V before and after the onboard regulator and a tiny step forward was adding a 3.3V regulator TPS7AXXXX taking the input from the original 5V regulator instead from the Pi bus. I didn't try powering the Pi itself from linear though.
