Hi Acko,
Could you give some more details please
Some questions that come to mind:
- Do they need a bipolar pre-reg as I believe the previous revision did? I think the combo-board versions of these needed bipolar pre-reg didn't it?
- Possibility for a stand-alone 3.3V ultra low noise reg? ie just the one reg on its own rather than the complete kit of all regs required for the AKD12/18.
Cheers,
Chris
Chris, the regs have floating inputs and outputs, you can use a dual positive supply to make a bipolar supply if you wish, just with different input wiring. in fact its a more straight forward connection, since the dual regs (the only ones that require it) are wired that way, you need to switch a bipolar supply around and connect 'ground' to 2 inputs to supply the dual input required.
as to your second Q, I have the same question.
as to your second Q, I have the same question.
what the hell are you on about Joe? you are the one personalizing it, you are the one pushing the claims, you are the one that should back up these claims. without that its a completely circular argument.
your confusion about this being an id thing is beyond me. it is ego that devises these problems and solutions, it is ego that forms response and opinion on them, it is ego that believes there can be something better, or that something different is 'better'. it is ego that produces the ever-changing landscape this is all spawned from; otherwise we would have all agreed long ago.
the rest, like I said, I have no desire, nor time to go blow by blow with you, its really very simple.
yawn
your confusion about this being an id thing is beyond me. it is ego that devises these problems and solutions, it is ego that forms response and opinion on them, it is ego that believes there can be something better, or that something different is 'better'. it is ego that produces the ever-changing landscape this is all spawned from; otherwise we would have all agreed long ago.
the rest, like I said, I have no desire, nor time to go blow by blow with you, its really very simple.
yawn
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What "outlandish claims" are they?
They are OBSERVATIONS!
I see that you are in Brisbane. Just come here.
I am really quite a friendly person. I don't keep grudges, not my style (unfortunately some do keep them against me, I can't fathom why). You are quite welcome here any time, and I would love nothing more than just demonstrate it - it ain't that hard to do. It isn't about winning an argument - I would rather let you 'win' and then move on.
Give me a chance?
Until then, should you not keep your powder dry? Isn't that the fair thing to do?
You clearly don't trust me. Is there somebody here in Sydney that you trust?
Send him here, I will be a perfect host. No aggro, no need to.
Then he (or she) can report back to you. I can't be more fair than that.
Please don't tell me that you are afraid - you shouldn't be. This isn't supposed to be about ego. I know one thing, when I listen to music, I don't think about clocks and jittter.
I want to be hooked, I want my FIX.
Don't we all?
Aren't we supposed to be on the same side? Really, I am trying to be as accommodating as can be and bending backwards as much as I can.
I am sure you must know somebody here in Sydney?
All I am asking for is a fair shake.
OK?
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BTW, we seem to have another common passion.
Photography.
Got a Nikon D800E and decent amount of Hi-Q glass. But we all know the equipment is only as good as the guy looking into the Pentaprism.
And what's this "shatter of illusions" bit?
Believe me, I am pretty good at that as well.
But never "mean spirited" - I am no Troll.
Music, Visual Magic and and a good Wine. There must be a God.
Photography.
Got a Nikon D800E and decent amount of Hi-Q glass. But we all know the equipment is only as good as the guy looking into the Pentaprism.
And what's this "shatter of illusions" bit?
Believe me, I am pretty good at that as well.
But never "mean spirited" - I am no Troll.
Music, Visual Magic and and a good Wine. There must be a God.
Attachments
I am all ears.
Re shattering illusions, what do you think of Bybees? I haven't noticed them making any difference, fitted some for a customer, supposed to work on the 'quantum level'? No actual explanation given. Yeah, I get a bit sceptic at times. More than a few times.
I don't trust so-called shootouts. Whenever you have an A-B comparison, the B wins by a LOT, usually by 3:1.
We proved this to a public meeting (ASoN) back in October last year, when two different sources were compared, and the A and B for selected tracks were made at the toss of the coin at the beginning of each round. It proved nothing, and yet it proved something very obvious, that A-B shoot-outs so fond of at audiophile get-togethers don't work. I refuse to take part in them.
We did the same at the European Triode Festival in Holland back in 2006 - some of the contributors here on diyaudio, including Stuart, SY (well-known diyaudio moderator) and we all witnesses the "B" bias factor.
Think about it. Listen and then change a fuse or something, and bingo, the "B" bias factor kicks in and you can hear the improvement the fuse made. Or did it?
The same in retail shops. You want to sell product A, then make it B in an A-B comparison. And the customer is at your mercy. Often the retailer doesn't even understand what is happening, because he often wants to believe what he wants the customer to believe.
Let's try comparing speaker cables, just make sure the more expensive one is B. Want to try the effect of a CD cleaner, ditto. Or demagnetizer. Or vinyl cleaner... you get the picture, right?
So how is that for "shattering illusions"?
Valid observations have to take on a critical faculties and time-extended exposure. You must listen to both for thirty minutes minimum and switching both ways.
Objective listening: If you can actually hear that a live feed in a recording studio sounds like and you can hear three voice harmony, and when the CD comes out, you buy it and you put it in your system and you hear just voices, most likely only two voices are obvious (the softest of the three will almost definitely be masked if definition is lacking), then we have an objective observation, not a subjective one. The you sort out your system somehow, and voila, now you hear three voices in harmony as intended. You are not dreaming. If revealing actual voices and whole instruments within a complex mix, then your ears are not lying to you.
But how many were in that recording studio hearing that there were three voices? They just wouldn't know. Few have heard the full dynamics of a live feed. I have worked for a number of recording studios as well as making and maintaining equipment. I am the guy who has made the infamous "Tube-Station" that is used by a number of leading recording artists in Australia, including Lee Kernaghan, Gina Jeffreyes, Leo Sayer, James Blundell, Troy Cassar-Daley, Col Joye etc.
And I can tell you, some of these guys that produces these guys have very good ears. They are not easily conned as they work up to 20 hours a day with equipment and become very much aware of what is doing what. They are proper professionals. Yet some audiophiles look down upon them - dangerous to judge all to a standard that is not even realistic.
Cheers, Joe R.
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Was meant for the DAC Analog supplies actually but possible to roll out other types, so long used for low power applications <50mA ....
Hi, Joe!
May I ask you one question? Have you ever tested a "synchronous master clocking scheme" on ES9018 in your environment?
In my case, once I experienced the configuration, I have completely lost my interest on any clock frequencies other than 90.3136 MHz and 98.304 MHz.
Bunpei
The same here!
If Joe can help source samples of SAW versions for the above frequencies from Epson then we can get the ball rolling. We believe you have made contact with Espon while in Singapore...
Also, tell us what are the best power supplies and filtering schemes that would suit the SAW XO best. How much would a complete XO module cost with all things added?
Yes, it has been tried, not by me and not using SAW oscillators. They won't make the synchronous frequencies unless you order a thousand, in fact any frequency.
As I said, I know somebody who has tried various synchronous frequencies and I suggested a 100MHz SAW which he liked better than others he had tried . There is of course a lot of 24 bit Flac files out there and that is where hi-res music is headed via downloading. You can see where I am going with this, if going down that route, you would have to switch be between different oscillator/frequencies. But I am inclined to stay with 100MHz and just find the best one - even if there will be arguments about that.
I have a Crystek 957 100MHz I need to try - a Buffalo user kindly sent it to me - I am snowed under right now with a studio repair job, but hoping next week to compare against the SAW. I will be about the seventh person trying this particular comparison - and so far the numbers have favoured the SAW. Still, I will be as objective as can be and let the chips fall where they may.
It's a very low noise with extreme high PSRR - servo-controlled to an extremely low frequency, so low it doesn't make sense on paper. As you can imagine, it would take days to come up and stabilise to 3.3V, so a timer and relay kickstarts the servo. When it is stable, it stores over 10 Farad (@3.3V) of energy. Don't ask me why, it just works and it works for people I have done this with. Mind you, this is the more extreme version I do when the Sabre DAC is used.
Based on what I just said, there are lots of people out there who could build this.
Cost? Depends, but I won't do it for cheap. I also totally guarantee this and back it to the hilt. I will also recycle for future use - only need to buy it once.
Cheers, Joe
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Hey Acko - I don't see any reason these couldn't be used in a Buffalo build, correct?
Sound good! Looks like a very specialised design/product. I suggest you start a new thread for those interested
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AKR Series MkII
Yes, it can be used with the BUFFs or other similar DACs but physical arrangement suits the AKD12/18 DACs
Yes, it can be used with the BUFFs or other similar DACs but physical arrangement suits the AKD12/18 DACs
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