In fact looking at how moode works (mainly PHP webapp) it could be relatively easy to include a DEVDAC special page without setting up additional software. Moode code is well written and understandable by any php developper.
The main part is to create I2S commands to control dac features then calling those features from UI is quite easy too. Moode seems offers an I2S kernel support. I will investigate when devdac+streamer arrives during xmas holidays.
Setting up a git repo could be a good idea. I'm not convinced that Tim would be opposed to add those features as an aditional package if it doesnt request to modify the original distro config.
bests
Hi John sent you a PM in regards repair or wait?
It's all a little quiet here and the thread is dropping down the list, so I thought I'd dare to post.
Anyway, I was reading something that really interested me from another thread, posted by muzzer:
http://pinkfishmedia.net/forum/threads/picking-up-a-chord-mojo-in-a-couple-of-days.209500/
But the really interesting bit is when you google the DAC muzzer uses; a 'Chevron Audio Paradoc NDF16 DAC', while reading it's reviews I came across some interesting ideas that mirror some of the thinking behind the MDAC2_DDA design:
'Inside the DAC itself, conversion is achieved by EIGHT, yes that's 8 chips running in differential mode. This costs more and potentially creates more opportunities for inacuracies, but is the popular contemporary go to solution for improved timing with minimal filtering, in DACs and CD players at the most elevated price points. Local linear power supply regulators in the DAC further preserve supply integrity at all signal processing and amplifying stages. Any analogue audio circuit is nothing more than a modulated power supply; the electrons coming out are not bigger versions of the same ones that went in!
So 8 dac chips receive identical non-oversampled data (whether 44kHz or 48KHz sample rate at 16 bits resolution), with precisely controlled time differences between each chip. Thus, when the outputs of the dac chips are summed together, there's effectively a 384 kHz sample rate with 19 bit resolution. Inverted data is fed to another 8 dac chips, thus creating a noise and distortion rejecting differential arrangement with the bonus of an extra bit of resolution. Colin Yallop likens the arrangement to lots of small steps on a stairway compared with a few enormous steps. Even without a low pass digital filter, the amplifier is not struggling to reproduce a series of abrupt square-waves (exciting oscillation) as it would for a filterless DAC running at just 44kHz or 48kHz.'
...and the other bit I found interesting:
'The power supply feeds the DAC via a multicore umbilical cord. Hence the demands of any part of the DAC will have no effect on the supply to other parts of the circuit. It has long been argued that no well designed power supply should sag enough under load to affect the regulation of other parts of the circuit. Your old scribe's experiments, experience of other's experiments, and auditioning, confirm that this is probably the most important factor in preserving musical qualities like timing and rhythm in solid state amplifying stages. Your Old Scribe has long railed against privileging any design Parameters above accuracy in the time domain.'
full review is here:
http://www.tnt-audio.com/sorgenti/chevron_paradox_e.html
“LessLoss continues to strive to be one of the very best cost/performance values around.”For the "Streamer Dreamer"...
<https://www.lessloss.com/laminar-streamer-sd-player-p-207.html>
A real exploration of how deep Santa's pockets are!
Just to clarify: in order to preserve accuracy in the time domain you have to sacrifice accuracy in the time domain? Not sure but it might be doing the same thing as an OT filter ie just repeat the sample values 8 times. It's not clear whether the 8 dacs produce identical outputs or whether they are dithered.It's all a little quiet here and the thread is dropping down the list, so I thought I'd dare to post.
Anyway, I was reading something that really interested me from another thread, posted by muzzer:
http://pinkfishmedia.net/forum/threads/picking-up-a-chord-mojo-in-a-couple-of-days.209500/
But the really interesting bit is when you google the DAC muzzer uses;
So 8 dac chips receive identical non-oversampled data (whether 44kHz or 48KHz sample rate at 16 bits resolution), with precisely controlled time differences between each chip. Thus, when the outputs of the dac chips are summed together, there's effectively a 384 kHz sample rate with 19 bit resolution.
...and the other bit I found interesting:
'The power supply feeds the DAC via a multicore umbilical cord. Hence the demands of any part of the DAC will have no effect on the supply to other parts of the circuit. It has long been argued that no well designed power supply should sag enough under load to affect the regulation of other parts of the circuit. Your old scribe's experiments, experience of other's experiments, and auditioning, confirm that this is probably the most important factor in preserving musical qualities like timing and rhythm in solid state amplifying stages. Your Old Scribe has long railed against privileging any design Parameters above accuracy in the time domain.'
full review is here:
http://www.tnt-audio.com/sorgenti/chevron_paradox_e.html
I'm not waiting for the Devdac, but I would guess a couple of weeks delay is no big issue....top quality is what we really want.
I would like to say thank you for all your hard work at the Audiolab! I purchased my very first hi-fi equipment this year and it consists of LAB series products- M-CDT, M-DAC and M-PWR. I am very happy with this little system and I could not imagine it can sound so beautiful- crystal clean and energetic- almost live like!
I am very sad to learn that you have left Audiolab some years ago- I only just learned about it here, by reading some of the threads.
But I am extremely happy to learn that you have your own company now and that you continue producing new amazing hi-fi equipment that is of highest quality!
Here comes my question, could you please (in simple words) explain to me if it is possible to upgrade my M-DAC to some sort of new level? Is that what you call the M-DAC2?
Also I keep reading about the MDAC2 streamer PCB- is that some sort of additional device? Or is it something that could be installed into my original M-DAC at the price of 250GBP, as mentioned on your company's webpage?
Please excuse me if I am asking you some silly question, however it is the only form of contact I found possible to learn more about new Lakewest's products.
If you have an email address of your company's representative, who could explain to me anything regarding M-DAC upgrades, or the M-DAC2, or the streamer, or the DEVDAC (what is it?), I would be most grateful to you for any information.
One last request, if there is a way to upgrade my M-DAC, please advise me on how that could be done, as I would be most happy to send it to you to the Czech Republic, as I myself live with my wife in Poland right now, so we're practically neighbors!
Thank you once again for all your hard work, and I wish you much success with your future projects!
Especially the FDAC- I am seriously ready to buy it when it's available for sale for my new house and a bigger system.
John, Sorry to hear about the situation with the solder paste printer. That distributor seems to be a rather silly person, I hope he's at least apologized properly. It seems to have stopped you in your tracks, but I'm sure other parts of the project would benefit during this waiting time. Maybe getting your HiFi set up really well, ready for the listening tests...or even reading the manual for the printer...
However my recommendation to you would be to spend you money on upgrading your speakers to ESL's (Electrostatic loudspeakers) - the "cheaper" ESLs from Martin Logan are very good:-
https://www.martinlogan.com/learn/electrostatic-speakers.php
Martin Logans cheapest ESL is VERY VERY good:-
https://www.martinlogan.com/electromotion/em-esl.php
I have ONE available
great for MONO..