New Linear Power supply upgrade for DMP A-6

A component could only be improved by a power supply if it’s regulation and filtration were so poorly designed that we were seeing power supply noise in the output of the dac, which in the case of Eversolo we are not, so no improvement possible.
Keith

 

Yes Keith, we all know that YOU are the only one who knows what's possible and what not. And all other perceptions are based on illusion. We know....... don't you bore yourself by repeating the same stuff over and over again? Will you be able to sleep at night if someone doesn't believe you and rather trusts his ears and even proves your theories wrong? Could you ever be happy in your life as long as different opinions and experiences exist? What are your plans to wipe out all these renegades whose existence you just cannot stand?

I think I will buy such a linear power supply and report of immense improvement of sound quality...... just for you, Keith! Just for you...... it must drive you insane!

 

Imagine away just don’t regurgitate it on forums, you may encourage other technically uninformed to also waste their money.
Keith

 

I just take these few words of yours, as they are the clue, the smoking gun of all the story...
Double-blind tests will reveal to you what is imagination... Of course, it is a little more complicated to perform DBT for power-supplies than it is for speakers, or any other audio part in the chain, basically because it is more difficult to have things change in an unnoticeable way...
1. it may take longer to (re)boot a device with a different PSU
2. it may be hard to use two units at the same time (one with SMPSU and one with LPSU) due to audio source synchronization...
But the truth is there: if you can come down to comparing blindly, without eyesight / knowledge of what is being used in-the-very-moment (and possibly with your eyes shut - it hugely helps, BTW) will get you very frustrated, trust me... it was so for me, and I was one of the hard bedrock, just like you, and many others.
Just give yourself a chance. Be prepared, though, to feel very disoriented afterwards; the very few days/weeks are overwhelmingly difficult to go through.

Just my 2c. I am not bla-bla-ing... I... well... been-there-done-that. Seriously, no BS.

 

Who are you to tell us that it isn’t?

No, because I have informed myself about confirmation bias, expectation bias, etc. and their prevalence.

 

Just like the other cult members like you, you argue against strawmen. Get in touch with reality, then get back to us.

 

So then check reality by yourself to make your own experience before forecasting what you don't really know.

 

Nothing you write makes sense or seems to be based on the content of this thread. It’s like you just took a talking point of the subjectivists without understanding it and ran away with it.

 

Post 453 was all I contributed. Then the discussion startet as usual by the same people telling the world the truth about others' perceptions. You have to read and at least try to understand instead of instantly concentrate on discrediting.

I'm done with that.

 

Maybe you should heed your own advice. Don’t discredit the facts, just because they don’t fit your emotional need for mystical improvements.

 

I am absolutely aware that only you know all the facts. And what you don't know cannot be fact. That's the way it works here. I am open to facts, but not just because those without own experience tell me their opinion. That's all.

 

Seek help.

 

Yes or at least compare more rigorously, two units one with the exchanged supply compare unsighted.
Keith

 

To all voodoo masters: Please explain to me how a change can become audible with a linear power supply when the output device, in its existing configuration, transmits no measurable interference in the audio signal from the built-in power supply?

If one of you can explain this to me plausibly, I'll change my mind.

 

If I repeat the same lie often enough…
Keith

 

I think nobody has yet measured the output of the switched the powersupply implemented in the A6. That would be in fact be easy, just connect to an oszilloscope and see if the line is flat, I mean absolutely flat. If it is flat, I do not see a way a different linear powersupply can improve or change anything.

But if there is some ripple or change due to the use by the integrated computer, then a different powersupply can change something. This does not mean that the replacement unit above is the way to go. Maybe it is eaven weaker than the inbuilt supply and introduces instabilites not present now, since it does not have enough reserves.

I personally think audio is highly subjective and the perception changes all the time. Something new often sounds so much better that the thing you had before. Only to become the thing which you want to replace with the next thing supposed to be even better. I would rather invest in music, for example got to bandcamp.com and buy some good tunes.

 

The output of the power supply itself is not important it is the output of the whole component.
One power supply may be marginally better than another but if the device’s filtration/regulation is properly designed it won’t make the slightest difference.
Keith

 

I don't think anyone is suggesting you shouldn't swap out the PSU, just that in doing so you might not fully realise the "benefits" you've been told it will apparently bring to the sound quality of your DMP-A6. The proof is, as @Purité Audio has suggested is in the actual side by side blind test comparison. Speaking as an audio /electronics engineer I've designed, modified, repaired and tested audio gear extensively over the years and I can assure you that it's extremely difficult to modify an already excellently designed and built piece of equipment to make it sound or measure better than it already is (assuming it's not faulty). If the SINAD of a piece of audio gear is already over 110dB any "improvement" in that figure isn't going to translate into an audible difference which 99.99999% of people could reliably hear in a blind test. If you can pick the difference 100% of the time in a double blind ABX test then you clearly fit into the 0.0001% of highly gifted individuals. Perhaps you are in that extremely small percentile?

I too was once highly influenced by marketing hype and after wasting a lot of money and time eventually concluded that subjective evaluation can be highly flawed, based mainly on expectational bias. You spent all this money. How can it possibly not lead to a significant improvement? Well, here's a heads up. It often doesn't make for any meaningful improvement. It can often be an illusion based on the desire to justify the expense with confirmational bias. I'm not for one moment suggesting that absolutely every piece of equipment can't be improved with a clearly audible difference, just not the eversolo DMP-A6. It's already very well designed. A couple of dB SINAD improvement in a product that already measures well over 110dB isn't going to make the slightest difference to the sound quality. If you can hear any noise in your system it isn't coming from your DMP-A6 (unless it's faulty), it's coming from somewhere else. If that's the case, swapping the PSU is going to be a complete waste of money and your time.

I sincerely hope you are being flippant with this comment. It kind of reminds me of a debate I had on another forum about extremely expensive "audiophile" fuses marketed in silk lined boxes at exorbitant prices. The poster was raving about the "orange" fuses he had installed, citing a "night and day" improvement in just about every possible aspect after a period of 100 hours of "burn in". In his next sentence he said he was so impressed by the "orange" fuses he just placed an order for the "improved black" fuses, simultaneously citing they would bring even further improvements. Err, hang on.... So I asked him "How could you possibly know the "black" fuses are better if you haven't yet got them, installed them and let them "burn in and listened to your amplifier"?" This a typical example of audiophool expectational bias on his part. The "black" fuses cost significantly more than the already ridiculously expensive "orange" fuses so the expectation (at least on his behalf) is they will sound even better. Now not being one to standby idly and just accept his assertions I asked him how could he possibly know the "black" fuses would sound any better than the "orange" fuses if he didn't yet have them or listened to them in his amplifier. I suspect you already know what his response was......

What people spend their money on is their business. If swapping out the PSU will float your boat so be it.

 

Agreed. A device with a poor PSRR could benefit from a quieter PSU but if the circuitry already has an excellent PSRR any improvement in PSU noise would most likely be academic.