Douk Audio is going to design a linear power supply!--Leave your ideas please.

[mhardy6647]

me, too... perhaps I should file a trademark application.

I realize that a trademark's different than a patent, but this still might constitute prior art?

ahem. I will stop now, out of deference to propriety! The OP's request is a valid and sincere one.

 

[Bruce Morgen]

A classic "solution in search of a problem" if ever I saw one.

 

[threni]

Hello all audiophiles,

As we know, the power supply is crucial for audio systems as it ensures stable and clean energy delivery, directly impacting sound quality. A high-quality power supply minimizes noise and distortion, enhancing clarity and detail. It also protects components from voltage fluctuations, ensuring reliability and longevity. Almost all audiophiles need more than on

Why stop there? You were on a bit of a roll then and I was already reaching for my credit card to get an expensive power supply for my laptop because I think the quality energy and detailed noise-free data and whatnot might be an upgrade I could treat myself to because I'm worth it and it'll clearly be a measurable improvement, right?

 

[xNORgate]

Thank you for asking.
If DoukAudio is still pursuing this design idea, I'd like to suggest some of my wishes.

• Forget the Remote Control?
• Remember the Trig In/Out?
• Two independent yet selectable outputs?
• Analog voltage meters?
• No LCD displays?
• Multiple models, for mix/match Vouts (5V+12V, 5+24, etc.) and Wouts (25W, 50, 100)?
• Output fine-trim (+/-5%)?
• GX16 (or latching) connectors?
• No BS specifications?
• Bullet-proof?

Under $120USD (exclusive of potential tariffs).

 

[antcollinet]

If you are going to ask your customers to part with money for this, then please justify it by showing measurable and audible improvements on the output of devices it is used with.

But be careful! If those devices are also Douk Audio devices and there is an audible improvement, we'll probably conclude we shouldn't be buying those devices also, since they don't have good power supply noise rejection.

 

[Astoneroad]

Man... this is a VERY tough crowd... on the battle front where anything but physics... is metaphysics.

 

[antcollinet]

Man... this is a VERY tough crowd... on the battle front where anything but physics... is metaphysics.

We are not big fans of snake oil.

For a linear PSU sold as an option, unless the sales blurb says something like

"It will power your device just as well as the wall wart it came with, but cost 10x as much"

Then it is basically snake oil.

 

[Sashoir]

I myself hate "power bricks"* and would love a solution to use one IEC C13 lead to power many barrel connector and/or USB inputs.

*nothing to do with linear vs switching supplies: power bricks are just much messier and less convenient in my view when there are many of them in close proximity.

 

[Berwhale]

I myself hate "power bricks"* and would love a solution to use one IEC C13 lead to power many barrel connector and/or USB inputs.

*nothing to do with linear vs switching supplies: power bricks are just much messier and less convenient in my view when there are many of them in close proximity.

It's a nice idea. I tried powering a Chromecast Audio in addition to a Topping D50s and A50s from my P50 linear PSU and it got quite hot. I'd be wary of powering devices that expect be powered by a switching USB 'phone' style charger from a linear PSU designed for audio devices.

 

[Old_School_Brad]

It's a nice idea. I tried powering a Chromecast Audio in addition to a Topping D50s and A50s from my P50 linear PSU and it got quite hot. I'd be wary of powering devices that expect be powered by a switching USB 'phone' style charger from a linear PSU designed for audio devices.

That doesn't quite add up -unless your other power supply had a higher voltage than the Chromecast power supply.
Chromecast Audio tends to get quite warm, so maybe you just noticed it more because you were paying attention after switching.

 

[Berwhale]

That doesn't quite add up -unless your other power supply had a higher voltage than the Chromecast power supply.
Chromecast Audio tends to get quite warm, so maybe you just noticed it more because you were paying attention after switching.

Yes, it's possible, but the CCA doesn't get as warm with the supplied PSU and it definitely got too warm for comfort when plugged into the P50 (which works perfectly well with the D50s & A50s). Both the CCA PSU and the P50 are specified for 5V/1A, so I was not expecting this issue.

 

[Djalife]

A PS either does what it's meant to do, or is broken. An external linear PS is generally pointless... not sure why Douk is bothering with this TBH.

Enhancing clarity and detail... really?


JSmith

If it's pointless why are so many components made with external PSUs? Phonostages for example. I think 15 to 25 watts, 1 to 3 amps is a good idea. DACS, streamers, phonostages all benefit from using a quality LPS. I use them for my components with positive results and will continue to do so.

 

[Bruce Morgen]

DACS, streamers, phonostages all benefit from using a quality LPS.

On what basis do you make that statement? What distinguishes the DC coming out of "a quality LPS" from the output of a switch mode PSU of equivalent "quality?"

 

[antcollinet]

DACS, streamers, phonostages all benefit from using a quality LPS

Welcome to the forum. Hopefully you'll like it here.

Any actual evidence to support that statement?


Before you say "I've tried it and heard the difference" that is not evidence.

Start your learning journey here:

Message to golden-eared audiophiles posting at ASR for the first time...

Hello friend. Hey, listen...we know how it is. Believe me, most of us have been there too. You've spent years toiling in the muck of audiophilia. You read ALL the reviews. You watched ALL the youtube videos. You visited ALL the other forums where everything always makes a difference. You...

www.audiosciencereview.com

And here:

Audio Blind Testing - You Are Doing It Wrong! (Video)

Just uploaded a video on the basics of performing controlled tests in audio. It was motivated by saving myself text in having to write all of this down when telling someone who to do these tests right. And as a counter to a few online personalities to keep saying they do "blind" tests yet when...

www.audiosciencereview.com

 

[xNORgate]

When does reasonable insurance - to maintain 'clean' power feeds -become snake oil?
Which would this EverSolo mod qualify as (if o'scope evidence is accurate)?

I've had this 120W LPS (12Vdc/+5Vdc) for 3 years, feeding 7 different A/V hardware... rather than a gaggle of wallwarts.

Should I repent, as an audiophool?

 

[Doodski]

When does reasonable insurance - to maintain 'clean' power feeds -become snake oil?
Which would this EverSolo mod qualify as (if o'scope evidence is accurate)?
View attachment 435331

I've had this 120W LPS (12Vdc/+5Vdc) for 3 years, feeding 7 different A/V hardware... rather than a gaggle of wallwarts.
View attachment 435332
Should I repent, as an audiophool?

What O-scope evidence is being shown?

 

[JSmith]

Any actual evidence to support that statement?

The poster joined 3 years ago and that was their first post. We'll see, but I get the feeling that was a hit and run post... or there is more to come.


JSmith

 

[antcollinet]

Should I repent, as an audiophool?

Unless you can show a measured improvement on the output (as opposed to the input) of the device you are using it on, then yes.

 

[boxerfan88]

I think it is a good product idea to design a LPS. You’ll have to choose the market segment to address. Let the market decide if your product is successful or not.

 

[boxerfan88]

When does reasonable insurance - to maintain 'clean' power feeds -become snake oil?

Yeah. Align w your sentiments. Many such posts, it’s normal.

Which would this EverSolo mod qualify as (if o'scope evidence is accurate)?
View attachment 435331

Wow!! Very well built & very clean voltage!