It even surprises me as to how much we did, on the side, back 40 years ago. Of course, we wrote some articles for the AES, IEEE, Audio, and even The Audio Amateur, but we had to make a living also. At this time I designed, amps, preamps, xovers, studio boards, and new electronics for master recorders. It kept me fairly busy, but it was not a very good living.
Why?
You might find an ES9028Q2M dac board with I/V and differential summing, but so what? The lowest price ones need I2S input, similar to AKM boards (which tends to add cost). And there are lots of other things that need fixing besides having an I/V output stage. Hardly makes much difference if the rest of the implementation is junk. 😕
For measuring. Getting low noise and distortion from a ES9018 board is simple enough:
Chinese ES9018K2M I2S DAC
By all means, share what is the correct purchase to make for a low cost ADC/DAC.
Chinese ES9018K2M I2S DAC
By all means, share what is the correct purchase to make for a low cost ADC/DAC.
we had no intention to write an article from the beginning. Most of the time, I was just an invited participant. Peter Moncrieff is the writer and has a periodical. What ever is documented were informal conversations and inquiry. More or less, because we all want to do better and learn more and all live in same general area --- the Bay area of California. I had full time job at LLNL.
See IAR/P.Moncrieff for such info you ask about.
THx-RNMarsh
yeah, me too. So much of what we learned and put out there is now in everything and all the DIY projects as well apply them. That is very satisfying. It was a very creative and productive time. We didnt invent something important to the world... like the transistor. But we opened doors into whole new subject areas not considered before or in the same way. Everything became suspect. All was opened to inquiry and inquire we certainly did. Take a bow, JC etal.
It was/is a passionate hobby interest. Much time and money has been wasted on it 🙂
Its Only Rock and Roll. But, I like it. I like it.
-Richard
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Thanks KT, I have a capable playback USB DAC already - CM6631A which lives in my hi-fi system. What I need is outboard Sound Card ie ADC/DAC and usb interface. I do have a Tascam USB ext SC but it is dated in terms of sample rate and internal noise. I was hoping for a cheap Chinese pcb with fixed level ins and outs suitable for mounting in a case and better performance than what I have now, iow I am looking to build the likes of AP, Prism etc measuring interface on the cheap. Dan.
It is not cheap, but the RME ADI-2 Pro is an extremely well executed product with very good software.
Spooky tech of the week. Antigone 2.0 Power Management System | Dr Acoustics No inductors, capacitors or resistors.
According to JA
Their blog is a hoot Our blog | Dr Acoustics
According to JA
hmmm.
Their blog is a hoot Our blog | Dr Acoustics
It really depends on your def. of "better" and "cheap".
Me, I chose to buy a Focurite Solo, ready to go for about $100 (actually got it used for $50 🙂). With the line input, the floor is about -100dB, pretty consistent with ARTA and DiAna.
Attachments
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Hey, we should all be nice and chip in for a time machine for JC, he was obviously happier 40 years ago, we should send him back..... 😀
Thanks Z, that's 20dB better than what I have and good enough except that I need identical input stages.
These things retail here new for $125 or so.....case, knobs, packaging, distribution, dealer markup, taxes etc.....so just how much does such a complete board cost ?.
Are there ASIO capable Ebay populated pcb versions that will do the same job ?.
Dan.
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We want the same thing. Ebay kits are generally focused on DACs, there aren't many ADC kits and I don't think I ever found a single one that had a good ADC and a good DAC on the same board. It is nice to have the DAC and ADC on the same clock source.
Yes ASIO and common clock is imperative for the loopback testing that I am doing.
In keeping with the industrial theme you might know this one - Buzzsaw Popstar .
The local uni anarchist radio station 4ZZZ played this track heaps back in the day.
Vampire Lovers (band)
Dan.
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oh no, we can't do that!
since he would know Toshiba will stop making those great JFETs in the near future, he would buy them all up before the rest of us got any to play with!
🙂😀
mlloyd1
since he would know Toshiba will stop making those great JFETs in the near future, he would buy them all up before the rest of us got any to play with!
🙂😀
mlloyd1
Ah, if measurement is the only issue, and you aren't too picky re how it sounds, Khadas Tone Board dac measures quite well for $99.
The reason I stipulate about sound quality vs typical measurements we use is reasonably well described in the following post: https://www.diyaudio.com/forums/dig...8-modding-topping-dx3-pro-11.html#post5726922
I should stop here, as no need to restart the never ending debate.
The future?
Multi function soc - dsp, audio, for smart speakers... "smart audio"
https://www.qualcomm.com/media/documents/files/qcs400-series-product-brief.pdf
QCS400 Series | Qualcomm
Multi function soc - dsp, audio, for smart speakers... "smart audio"
https://www.qualcomm.com/media/documents/files/qcs400-series-product-brief.pdf
QCS400 Series | Qualcomm
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That's only a DAC?
No need at all, but please remember that the plural of anecdote is not data, nor is it proof.
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