Well, I feel honored by this 😱 thanks for your interest and hope there will be enough to read in the future, specially with some stuff coming up 😉
It is all down to Hiraga-san. Theres allways enough to keep track on with him. Now you made me press buttons. Ill rather read all about it. I have allready tracked the underside of your new boards. Sorry. I couldnt help myself. Carry on Doede.
Seriously Doede.
I really appreciate your efforts in making a lot of people happy with their sound. Myself included. It has been a great pleasure following everybody. Thanks again all of you enthusiastic diy'ers !
I really appreciate your efforts in making a lot of people happy with their sound. Myself included. It has been a great pleasure following everybody. Thanks again all of you enthusiastic diy'ers !
some information in French
Hello,
People begin to realize the importance of a good power supply.
I do have some pdf files in French but they are big to post them here. If you are interested let me know.
Greetings, Eduard
Hello,
People begin to realize the importance of a good power supply.
I do have some pdf files in French but they are big to post them here. If you are interested let me know.
Greetings, Eduard
Hi Stijn,
Thanks for picking it up. Always great to have second set of eyes!
Note - I have previously used the TentShunt 5Vdc from DDDAC's supplying the clock area on S03. I think Stefan has pick up the high impedance from the long leads. I haven't try using onboard i2s Tent-shunt to supply section of S03 uFL. Will do it today.
It is probably worth mentioning that when I use 3 separate ps to supply S03, i.e i2s TentShunt is no longer part of S03 supply input, sound has open up with more airs/dynamic!
So look forward to have a final chapter on this DDDAC! We might never know, there is a chance it possibly be in Paris this June?!?!??
Chanh
Hi Chanh,
thanks for your feed-back... just preparing our two weeks trip to Japan Jean told me that he will be glad to test and compare all these new DAC prototypes coming June in Paris. And he will bring in the last one made by André Klein (you know the WE-guy from Metz in France who will accompany us to Japan as will do Jean Veys from LencoHeaven) especially because it is using direct current output with direct connection to his current input large power transmitting tube used in audio, C class, with current input...
So, this will be spectacular, and take me for my word, my offer to support you is still valid, and your place, Chanh, is reserved... just tell us...
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yes, right you are, the squares are as perfect as it gets, thanks Doede, and it really sounds...
(I'm not talking about the power supplying the clocks.)
The shields of the Uf.L leads connect the ground plains between devices it makes sense to use the same psu at those respective sides of the isolators, in other words to let the RPI/BBB power the input side of the S03 and to let the DDDAC provide the power for the output side of the S03.
In my case when using the DIYinHK 5V PSU, on the DDDAC facing side of the S03 (using the Uf.L leads), soundstage was noticably less wide with less centre imaging and sound was thinner. To my taste this was detrimental.
IMO, less is more in this case.
Stijn,
I have carried out the test per see. My position stands, but there is a possibility that I am suffering from hearing deficiency!🙂 Having another ps other than the one provided by i2s 5Vdc header is audibly better. Well, based on my setup and hearing capability, ofcourse. Could it also be that my Tent-Shunt is only outputting 4.85Vdc?😕 I emailed Guido sometime back wrt the variation of 0.15V but never got a single reply....! Oh well.
Wrt Diyinhk power-supply, can I assume you were using the older version with dual green board 4uV type? If that is the case, they are very noisy as hell! Why not put them under your Scope? I had also tried them here previously, can't remember where I placed the photo but they worsen my setup when in use! I didn't believe my ears so pulled out the scope and...., the ears never lied!
These newer version, red board with 1uV, still sound crap at stock. However, they are much better than those green ones. I can only live with them after replacing the output cap to Elna RFS and adding Wima 0.1uf and Oscon 47uf in parallel.
Here isn't making an agument, rather constructive discussions for us to improve our craving for better sound without too much single individual efforts?! 😉
Chanh
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Hi, the only thing I can think of is that your 5V shunt on the mainboard is set to provide insufficient current to add the additional load of the output isolator side. Mine was set to supply 80mA.
Intresting what you are saying about the different DIYinHK PSU's
I'm currently not making any changes to my dac while I'm burning the new addition, EMS LB12EX fieldcoil drivers. 😀
Hi R,
Privileged and Honour with your invitation. 🙂
Thank You so so much...! My current plan is to fly to Denmark a week prior to the event, visiting family members there. Then fly to Paris for the get together and meeting You, Doede, and the rest of diehard DDDAC's Ben Wagon! 🙂
Currently, I can not 100% certain due to two contingencies:
1. Work's commitment, the current position is unable I to make a long term plan due to such dynamic of a construction project.
2. Deadline to finalise the housing for this DAC. As you can see it is quiet challenging with its massive stack, and the raw unregulated ps are as complicated. 😀
Will inform you soon via pm. Many thanks again R! 😉
Best,
Chanh
@Stijn - I think my 5V Shunt is only 60mA and the current demands from S03 at uF.L is 60mA minimal. This could be the possible reason we didn't find ourselves concurred?
As regards to DiyinHk PSU, I don't make up stories. 😉 Whatever I said here on diyforum are factual with real practical experiences/experiments. I stand by every word I said though they might not always concurred with many. I trust my ears and with my practical experiences! 🙂
Btw, I hope reading some feedbacks from Stefan with his new TP Hermes/Cronus BBB via Botic. Mines is a bit of more wait....! 🙁
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Hi Doede,
There is a MCLK input on the blue board but it seems that it is not connected if I look at the schematics??
Can you elaborate?
I am now running the BBB/cronus/hermes streamer on the dac and this has a master clock output that can be used.
Regards,
There is a MCLK input on the blue board but it seems that it is not connected if I look at the schematics??
Can you elaborate?
I am now running the BBB/cronus/hermes streamer on the dac and this has a master clock output that can be used.
Regards,
DDDAC doesn't use masterclock at all.
The trick Doede has found to deactivate internal filter and oversampling (nos mode) is to use the bitclock as masterclock (or systemclock on pcm1794).
DDDAC 1794 NOS DAC - Non Oversampling DAC with PCM1794 - no digital filter - modular design DIY DAC for high resolution audio 192/24 192kHz 24bit
The trick Doede has found to deactivate internal filter and oversampling (nos mode) is to use the bitclock as masterclock (or systemclock on pcm1794).
DDDAC 1794 NOS DAC - Non Oversampling DAC with PCM1794 - no digital filter - modular design DIY DAC for high resolution audio 192/24 192kHz 24bit
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A new source for my favorite DAC
Hi,
My Dac has two nice sources now:
-RPI2 (running Runeaudio, MPD put in isolated core), Acko S03, asynchronous with 100mhz crystec clock
-BBB (running Botic), Twisted Pear Hermes/Cronus, completely synchronous with 45 and 49mhz crystec clocks
I took out the spdif input (wolfson sounds bad so no real loss 😀) to create a second I2S input. Now with a simple flick of the switch I can compare both streamers.
Will report after comparison of both, first have to do some running in.
Hi,
My Dac has two nice sources now:
-RPI2 (running Runeaudio, MPD put in isolated core), Acko S03, asynchronous with 100mhz crystec clock
-BBB (running Botic), Twisted Pear Hermes/Cronus, completely synchronous with 45 and 49mhz crystec clocks
I took out the spdif input (wolfson sounds bad so no real loss 😀) to create a second I2S input. Now with a simple flick of the switch I can compare both streamers.
Will report after comparison of both, first have to do some running in.
Attachments
Yes, I have seen that but I was puzzled by the (MCLK) connection on the blue board. I guess this pin is not connected to the dac and the text mask "(MCLK)" is only there to fool us all 🙄
I think Doede just put it here to match the output header of the wave-io.
But between parentheses because he doesn't use it 😀
But between parentheses because he doesn't use it 😀
OK, so here it is:
No need for extended comparisons; BBB-Cronus wins hands down!
Listening to some vocal music (Ben Harper, Ed Sheeran 44,1KHz/16Bit) portrays the differences quite obvious: the BBB is more open, has more resolution, more layers, there is a grey layer taken off the voice.
Very nice!
I suppose after running in, the sound will develop more but the level is superior already.
This makes you think what a waste of time it is to try to get good sound from a PC running DSD files over USB. Without the synchronous clock system of the Cronus there are some bottle necks that compromise the DSD signal significantly.
Regards,
No need for extended comparisons; BBB-Cronus wins hands down!
Listening to some vocal music (Ben Harper, Ed Sheeran 44,1KHz/16Bit) portrays the differences quite obvious: the BBB is more open, has more resolution, more layers, there is a grey layer taken off the voice.
Very nice!
I suppose after running in, the sound will develop more but the level is superior already.
This makes you think what a waste of time it is to try to get good sound from a PC running DSD files over USB. Without the synchronous clock system of the Cronus there are some bottle necks that compromise the DSD signal significantly.
Regards,