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

[raif71]

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

In fact, we designed and produced one linear power supply P50 before but not selling well due to some reasons. Hence, this time we are eager to know the real requirements from our users before production.

Here are some questions. Please leave your answer below and share any of your ideas. Thank you!
1. How many voltage outputs and what voltages do you want?
2. Besides adding a display screen to read the voltage, are there any other functions you need?
3. Do you have any ideas on its look? Such as the shape, the color, the switch etc.
4. What price do you think would be more appropriate?


Any other suggestions are welcome! Thank you all!

I have the Topping P50. When you mentioned the P50, do you mean the Topping P50? I use this mainly with the A50s and D50s stack. I also have the M50 too so they all fit nicely with the P50. I use it for convenience and didn't notice any sound improvement. I only suggest that you test whether the new linear power supply will cause significant sound improvements to audio systems ie have a "before" and "after" scenarios.

 

[Sokel]

If I was you I would make so to deal with real problems (a nice LPS can do that) .
Make it immune to external spikes,noise (like led lights,motors,AC high freq injection,etc,etc) ,rock steady,include all protections possible .

It has to have a switch,indicator and make sure you certify it.

Want appeal to traditional audiophiles too?Make it with shunt regulators,or use ultra low noise LT stuff,etc and make sure to use plenty of filtering,20.000 uF is a good start.
A 5V 1A,12V 2A and an optional 15-0-15 1A outputs are the usual that covers all worlds.

(and that's how it will never be the cheap you normally expect from Douk )

 

[Old_School_Brad]

If I was you I would make so to deal with real problems (a nice LPS can do that) .
Make it immune to external spikes,noise (like led lights,motors,AC high freq injection,etc,etc) ,rock steady,include all protections possible .

It has to have a switch,indicator and make sure you certify it.

Want appeal to traditional audiophiles too?Make it with shunt regulators,or use ultra low noise LT stuff,etc and make sure to use plenty of filtering,20.000 uF is a good start.
A 5V 1A,12V 2A and an optional 15-0-15 1A outputs are the usual that covers all worlds.

(and that's how it will never be the cheap you normally expect from Douk )

No audiophile would want to be left powerless. Fortunately, Denafrips stands as an inspiration of peak capacitance.

 

[Scrivs]

I realize that SMPS design is not a trivial undertaking, but… I believe Douk’s efforts would be better sent in designing a range of “quality” switchers a la Hypex, Micro Audio, Meanwell, etc.

The above are sought out for several reasons, and Doukie may do well to “emulate.” Here are a few of the desirable traits (in no specific order):

Published, measured PERFORMANCE
/SPEC: e.g. noise, heat abatement, stability, reliability/robustness/inbuilt protection features, etc.

Quality. IRT to part selection, PCB material, layout, adherence to international safety and quality standards.

Warranty/support. While you cannot control the knowledge and competency of your products end-users, do have reachable, knowledgeable customer support, and a warranty that’s at least as competitive as the… …competition.

Stop pandering to “audiophiles” that lack anything resembling subject matter knowledge/expertise.

Know your target audience. Hint, for shilling an LPS, ASR isn’t the place to do it.

One last thing- your current industrial design team needs to be “repurposed.”

Hope that helps

 

[JSmith]

Stop pandering to “audiophiles” that lack anything resembling subject matter knowledge/expertise.

Agree... the more companies like Douk & Fosi etc. do this sort of thing, the less I would consider buying their wares. Can't be on both sides of the fence at once...


JSmith

 

[Scrivs]

Agree... the more companies like Douk & Fosi etc. do this sort of thing, the less I would consider buying their wares. Can't be on both sides of the fence at once...


JSmith

Yup, you nailed it. Also, it rubs me the wrong way how Douk essentially uses ASR for free market research without offering anything in kind other than potential future revenue Douk.

WTF is a “Douk” anyway? “Douk” reminds me of “dookie,” or for our non-Western audience, “shit.”

It’s all beyond silly.

 

[somebodyelse]

Agree... the more companies like Douk & Fosi etc. do this sort of thing, the less I would consider buying their wares. Can't be on both sides of the fence at once...

Are you including RME in that now they've done a 'linear' PSU with a product description right out of the audiophile playbook? Schiit haven't stopped the audiophile nonsense even though they now provide measurements.

 

[Sokel]

Are you including RME in that now they've done a 'linear' PSU with a product description right out of the audiophile playbook? Schiit haven't stopped the audiophile nonsense even though they now provide measurements.

Topping has one too I think.And they're also into BS calling distortion "flavor" or "color" or some nonsense.
No one is immune.

 

[Sokel]

No audiophile would want to be left powerless. Fortunately, Denafrips stands as an inspiration of peak capacitance.

View attachment 430451
View attachment 430452

Here you go,a nice one

VXN Series

VXN Series Award-winning clarity and power The VXN Power Supply, Phono Amplifier, 2 & 3 Way Active Crossovers are masters of their class. Combining cutting edge technology with years of audio experience, these products offer a level of performance that simply has to be heard to be believed.

exposurehifi.com

 

[DSJR]

No audiophile would want to be left powerless. Fortunately, Denafrips stands as an inspiration of peak capacitance.

View attachment 430451
View attachment 430452

Either a hideous service cost when those caps finally give in - or landfill for the future - ugh!

 

[JSmith]

Are you including RME in that now they've done a 'linear' PSU with a product description right out of the audiophile playbook?

I'm not seeing any audiophool descriptors there though?

Linear Super Low Noise Dual Audio Power Supply with µFilter and Sensor Technology - RME Audio Interfaces | Format Converters | Preamps | Network Audio & MADI Solutions

RME Audio Professional Live, Studio, Recording and Broadcast Solutions. Unrivalled Quality, Performance & Stability MADI Interfaces, Converters & Preamps.

rme-audio.de

Certainly no mention of "enhancing clarity and detail". I have no issue if Douk produce a linear PSU, but I do if they make false and/or audiophool claims about it.

Schiit haven't stopped the audiophile nonsense even though they now provide measurements.

I appreciate they updated their products and started providing measurements... but, as you say the nonsense continues a little. Another reason why I won't buy Gustard, after they started selling audiophool fuses with flowery descriptions. Fosi are really doing some silly stuff too with suggesting different op-amps are needed for specific genres.


JSmith

 

[-Matt-]

Something actually useful could be a rackmount box (maybe offer 1U and 3U designs) with an accompanying range of different power supply modules.

If you change a component and need a different supply voltage then you just need to replace one (plug-n-play) module. Maybe the 1U rack can fit 4 modules and the 3U one up to 12.

It would allow people to tidy up their server rack or hifi setup, avoiding a tangle of separate power bricks. Just one IEC cable for AC input to the rack unit. The power supply modules could have some sort of molex connector to standardise the dc output. You could then offer a range of customisable length and end connector wires.

It would be nice if the design also included 12V triggers, RS232 or IP control options, preferably with a method of scheduling delays on startup/shutdown.

Please send me my inventor's fee in bitcoin!

 

[Paffi]

Many switching power supplies (wallwarts) - in fact all I have - introduce noise and/or make noise. That´s really driving me nuts and maybe a lps would help...

 

[somebodyelse]

Certainly no mention of "enhancing clarity and detail". I have no issue if Douk produce a linear PSU, but I do if they make false and/or audiophool claims about it.

It's all the talk about the audiophile-friendly bits inside rather than its capabilities and performance. 30,000µF capacitor bank, 60VA audio toroidal transformer with isolation winding and magnetic tape shielding etc. Little to nothing about when it might actually be of benefit at the DAC/ADC output, especially as they said in their forum that the internal regulation of their products is good enough that changing from the supplied PSU to a better regulated one won't improve performance. They don't talk about any of their other products like this, even the ADI-2/4 Pro SE and ADI-2-DAC FS that target home hifi instead of their usual pro market.

 

[Sokel]

It's all the talk about the audiophile-friendly bits inside rather than its capabilities and performance. 30,000µF capacitor bank, 60VA audio toroidal transformer with isolation winding and magnetic tape shielding etc. Little to nothing about when it might actually be of benefit at the DAC/ADC output, especially as they said in their forum that the internal regulation of their products is good enough that changing from the supplied PSU to a better regulated one won't improve performance. They don't talk about any of their other products like this, even the ADI-2/4 Pro SE and ADI-2-DAC FS that target home hifi instead of their usual pro market.

Their tech stuff here said that such a PSU is the last resort sometimes as a nice LPS's output is free of harmonics,immune,etc.
There's the post somewhere around here.

 

[mhardy6647]

I mean... in my day... capacitors were capacitors... no banks of weenie little electrolytics!

Spoiler

The above is for humorous purposes only. Modern electrolytics, of course, are much smaller than their vintage counterparts, and that high voltage "oiler", while impressive in every sense of the word, is a fairly small value cap.

 

[EJ3]

I mean... in my day... capacitors were capacitors... no banks of weenie little electrolytics!

Spoiler

The above is for humorous purposes only. Modern electrolytics, of course, are much smaller than their vintage counterparts, and that high voltage "oiler", while impressive in every sense of the word, is a fairly small value cap.

Same here:


The picture above is an unrestored NAD 2600 (from QuirkAudio).

 

[EJ3]

Well, I certainly like the robustness and reliabilty LPSs typically provide. A digital Voltage meter only makes sense if you are offering multiple voltage outputs. I would prefer something low profile, but large enough to stack the smallish components on. MUST be a metal enclosure.

A meter (or 2 [voltage & watts drawn]) would differentiate it.
You could see if there is voltage 'sag' & how many watts something draws at any given point in time.

 

[mhardy6647]

Since all true audiophiles know that euphonic power supply sag is part of the vintage hifi magic... yeah, not just meters, maybe adjustable power supply sag would be a great differentiator! They could give the control an audiophile name -- perhaps warmth or PRaT... or "Spouse in kitchen response trim" knob.

oops, maybe I'm gettin' too snarky, now!

 

[EJ3]

Since all true audiophiles know that euphonic power supply sag is part of the vintage hifi magic... yeah, not just meters, maybe adjustable power supply sag would be a great differentiator! They could give the control an audiophile name -- perhaps warmth or PRaT... or "Spouse in kitchen response trim" knob.

oops, maybe I'm gettin' too snarky, now!

I like: "Spouse in kitchen response trim" knob best!