Maybe it was just the initial shock ... maybe DAC is warming up or maybe brain is adjusting for "new" patterns in music that were previously damaged by a digital filter in WM874x delta sigma used in that DAC
Sometimes you have to get off the two tubes you putted into the ears cause no more free area on the workshop desk , before the next listening test session! 🤣Maybe it was just the initial shock ... maybe DAC is warming up or maybe brain is adjusting for "new" patterns in music that were previously damaged by a digital filter in WM874x delta sigma used in that DAC
It is easy to solve some tones problems with the knobs of the pre or passive parts around the op amps 🙂
Just a question here. Would the following DF210G be an acceptable alternative to the 2W10G-E4/51?
DF210-G
Regards,
Dan
I can't do SMD so I'm trying to do a THT version of similar size. I thought the DF210 might save some space.
I was also thinking of this to make a low cost Miro Mini 12.
Power Transformer
Regards,
Dan
P.S. Many thanks to Miro for his contributions.
200ma if you parallel the outputs for a single Miro mini PS. Or for slightly higher cost you can do this Power Transformer for 250/500ma.
Regards,
Dan
Regards,
Dan
After playing for a month with only small bits - different regulators, i/v stages, separate transformers for everything, etc, I still find the high end extension and the soundstage precision lacking. NOS not the main culprit as there is surprisingly little difference between red book and 176kHz.
Passive parts clearly help with the highs, at least to some extent, but i don't believe the soundstage can easily be fixed.
It is perhaps the basic 1862 character. A few decades ago i had a commercial dac with this chip and it was dull as hell. This is so much better.
Any chance you meant to write CS8412?
I don't miss those awful spdif days at all 🙂 Used to like the 8412 best and the 9001 the least. No experience with Wolfson.
CS8416 or 14 ? doesn't remember exactly the ref. Not a great souvenir ! You need a good suply and avoiding RCA plug helped; but I do not regret any spidf reciever either... USB was a big step ! I
also tried the Wolfson in the Subbu DAC iirc too... short and pro plugs with impedance matching helped a lot.
DIR9001 in dac with ad1865 20 y ago perhaps, always the isolation is a cork for the sound (I risked direct coupling... way better) ! Maybe it was 16 y ago, do not remember. it was just before the Squeezeboxs... I had pillls of second hand cd player I bougth for nothing 5 to 20 euros...
also tried the Wolfson in the Subbu DAC iirc too... short and pro plugs with impedance matching helped a lot.
DIR9001 in dac with ad1865 20 y ago perhaps, always the isolation is a cork for the sound (I risked direct coupling... way better) ! Maybe it was 16 y ago, do not remember. it was just before the Squeezeboxs... I had pillls of second hand cd player I bougth for nothing 5 to 20 euros...
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CPLD for very low jitter with I2S inputs selector and selectable PCM output with Stop-Clock and ReClock function in progress 😎
Schematic based approach for CPLD. It will take some time to complete and test.
The schematic quartus project with modified pins will also be possible to upload into that standard 10€ CPLD board from aliexpress, there are inputs for oscillators 🙂
Schematic based approach for CPLD. It will take some time to complete and test.
The schematic quartus project with modified pins will also be possible to upload into that standard 10€ CPLD board from aliexpress, there are inputs for oscillators 🙂
Attachments
In a nutshell - take in i2S signal (3 selectable inputs) and output PCM (with inverted PCM too for balanced DAC) so that one can feed to dac direct without the glue logic, reclock for low jitter etc.
I see a lot of flexibilities on this board, as what Miro mentioned in his notes.
I see a lot of flexibilities on this board, as what Miro mentioned in his notes.