Hi tamra,
Yes, I understand 🙂
The clock should get even better over the next 6 or 7 days, if its a new one. Just leave it powered up during that time whether you are listening to music or not.
Best,
Mark
BTW, for those readers who are not familiar with "SC Pure," it is the brand name Iancanada uses for his clocks. IME they are way, way, way better than Crystek, Accusilicon, and or NDK SDA. Some people seem to have trouble believing it can be possible, but with Marcel's dac it makes a big difference.
Yes, I understand 🙂
The clock should get even better over the next 6 or 7 days, if its a new one. Just leave it powered up during that time whether you are listening to music or not.
Best,
Mark
BTW, for those readers who are not familiar with "SC Pure," it is the brand name Iancanada uses for his clocks. IME they are way, way, way better than Crystek, Accusilicon, and or NDK SDA. Some people seem to have trouble believing it can be possible, but with Marcel's dac it makes a big difference.
It's not about trouble believing but lack of controls. Without controls it is just an opinion and you know the old saying about opinions.
hi Mark, just curious any opinion on "sc pure" vs Andrea's drixo? opinion is ok thanks
Hi kinsei,
I would take DRIXO over SC Pure, but DRIXO depends since it is a sine wave oscillator without built-in squaring. If using a sine wave oscillator I would probably choose to use my own squaring circuit. Possible use of doublers may also be a factor for some dacs.
I would take DRIXO over SC Pure, but DRIXO depends since it is a sine wave oscillator without built-in squaring. If using a sine wave oscillator I would probably choose to use my own squaring circuit. Possible use of doublers may also be a factor for some dacs.
I have bare TWTMC D&D board.
Dose it fit to your clock board or I2SoverUSB?
And wondering if it's worth to build with SC clock.
Dose it fit to your clock board or I2SoverUSB?
And wondering if it's worth to build with SC clock.
I probably wouldn't use that myself, since it uses ferrites. IMHO and IME ferrites can adversely affect clocks. Some more info on ferrites:I have bare TWTMC D&D board.
Dose it fit to your clock board or I2SoverUSB?
And wondering if it's worth to build with SC clock.
https://www.diyaudio.com/community/threads/general-purpose-dac-clock-board.413001/post-7763303
https://www.diyaudio.com/community/threads/general-purpose-dac-clock-board.413001/post-7765137
Yes, some people seem to have trouble believing in controls.Regarding opinions, some people have opinions about controls.
Hi Mark,
I am confusing that your general clock board dose pcm to dsd?
And if yes, what happen if dsd source?
I am confusing that your general clock board dose pcm to dsd?
And if yes, what happen if dsd source?
There is another thread for the board that converts PCM to DSD (sometimes people call it PCM2DSD): https://www.diyaudio.com/community/threads/simple-dsd-modulator-for-dsc2.370177/
PCM2DSD will automatically pass DSD from I2SoverUSB to the dac.
My board that connects I2SoverUSB to PCM2DSD is the interconnect board at: https://www.diyaudio.com/community/threads/general-purpose-dac-clock-board.413001/post-7729422
PCM2DSD will automatically pass DSD from I2SoverUSB to the dac.
My board that connects I2SoverUSB to PCM2DSD is the interconnect board at: https://www.diyaudio.com/community/threads/general-purpose-dac-clock-board.413001/post-7729422
Sorry, interconnect board is at: https://www.diyaudio.com/community/threads/general-purpose-dac-clock-board.413001/post-7702293
BTW, someone mentioned to me about this High Speed PCB Design place: https://speedingedge.com/
They have published some books and newsletters. Here is a little snippet from one book:
View attachment 1345192
Turns out they don't like ferrites.
I guess this is from people interested in very-high-speed digital circuitry, rather than in controlling crosstalk in a mixed-signal design. Ferrite beads can be quite effective when you want to control crosstalk via magnetic coupling or common-impedance coupling, and a bit of extra ripple on the aggressor supply domain is often no problem.
Yes, probably so. Still, for audio dacs there is something about ferrites that seems to make the sound brittle. Maybe it is the hysteresis distortion. Also, I still maintain that phase noise plots do not tell everything about time jitter. RMS jitter can only be estimated from such plots. Peak time jitter, not so much.
I believe the much lauded Ian SC Pure uses UK made RFX OCXO clocks. With no disrespect to his amazing work and development and offerings to the DIY community, is there any benefit you very capable guys designing your own oscillators using the RFX parts? Even if only for your own use/ curiosity?!
For one thing, crystals have an MOQ for each frequency (minimum order quantity). Therefore someone has to become a reseller and stock them, or else organize GBs.
Other than that, my position has been that I am only willing to design things diy'ers should have available for dac building, but that aren't sold. I almost didn't do my own reclocker until I started doing some checking to see if the ferrites on my old reclocker were having any effect on the sound. Turns out they did have an adverse effect. And so did the nonlinear bypass caps but to a lesser extent. I felt somebody needed to fix that but apparently nobody else wanted to do it, so I did the reclocker project. Don't see a similar need with clocks themselves.
Other than that, my position has been that I am only willing to design things diy'ers should have available for dac building, but that aren't sold. I almost didn't do my own reclocker until I started doing some checking to see if the ferrites on my old reclocker were having any effect on the sound. Turns out they did have an adverse effect. And so did the nonlinear bypass caps but to a lesser extent. I felt somebody needed to fix that but apparently nobody else wanted to do it, so I did the reclocker project. Don't see a similar need with clocks themselves.
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Thanks for the reply and for clarity I think I need to add some further points.
Above I inferred that the SC Pure uses RFX OCXO. I believe I am wrong there as I have just seen that Ian offers RFX OS400 OCXOs but they are a different item to his SC Pure, which I believe uses a Laptech crystal.
Sorry for the duff info.
Above I inferred that the SC Pure uses RFX OCXO. I believe I am wrong there as I have just seen that Ian offers RFX OS400 OCXOs but they are a different item to his SC Pure, which I believe uses a Laptech crystal.
Sorry for the duff info.
Laptech was apparently acquired by RFX a few years ago. Anyway, OCXO stands for "Oven Controlled Crystal Oscillator." The crystal itself does not comprise an OCXO because it does not include an oven. The use of an oven is for long term frequency stability. Isn't really needed for audio, but it doesn't hurt either.
Hi Mark,
I am ordering parts for clock board,reclocker and pcm2dsd.
For Pcm2dsd board, It's difficult to get XC6SLX9TGQ144 here so I will make it later.
I have some questions for the clock board resistor and caps value.
R3,4,5,6,11,14,21,22
C1,2,9,10,11,12,16,17,18
Any specific value for D1-D3
What is TP2?
I am ordering parts for clock board,reclocker and pcm2dsd.
For Pcm2dsd board, It's difficult to get XC6SLX9TGQ144 here so I will make it later.
I have some questions for the clock board resistor and caps value.
R3,4,5,6,11,14,21,22
C1,2,9,10,11,12,16,17,18
Any specific value for D1-D3
What is TP2?
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