Guomapi
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I purchase a schiit digital filter. Do not feel amazing. Just a little change. Although $100 is OK.
Thoughts on a bunch of DACs (and why delta-sigma kinda sucks, just to get you to think about stuff)
- Thread starter purrin
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How did you buy something which isn't out yet?
Maxvla
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I guess he means a Wyrd.
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I am totally confused.
bontakunlevi
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Purrin, Guomapi is probably referring to the Schiit Wyred http://schiit.com/products/wyrd-usb-decrapifier which is not related to the digital filter in the upcoming Yggdrasil dac that you're discussing.
-bontakun
-bontakun
Guomapi
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Yep right I missed
StefanJK
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This looks like a decent guess to me. How common are voltage output dac chips? Mofat seems to have hinted strongly that he's using a 'volts', which I take to mean no i-v conversion stage and high voltage (which this chip does up to 33 V). 20 bit is 'good enough' for what we want.
This write-up appears to be relevant: The 20-Bit DAC Is the Easiest Part of a 1-ppm-Accurate Precision Voltage Source:
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The only problem with that one is it doesn't take standard digital i2s or even anything resembling audio in digital format. Look at the write mode timing diagram. Doesn't exactly take 44.1khz straight up and need to run through a few loops to load up all the bits in word.
jacal01
You've just been blocked by Mr. Conviviality!
Besides the fact that it's single bit, you mean?
jacal01
You've just been blocked by Mr. Conviviality!
Yeah, I didn't cruise the totaldac website in too much depth, basically looking for the exact foto source purrin used, but you'd think that I could have mentally rotated the top down interior board shot to an isomeric view, wouldn't you?
The d1 does have its enthusiasts, agreed. Have to sell it to purrin, tho, it's his category.
Who are you addressing here, me or estreeter?
Do you include the DAC8811 chip in this statement? Have you looked at its datasheet? INL ≈ ±0.7 @ 25 °C work for you?
Does this DAC circuit look capable of sustaining the output VOLTS that Baldr alluded to? I suppose that its not requiring an output buffer as he also included is a mark against it. Not a whole lot of other candidates in active production that I could divine...
StefanJK
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It is 'single 20-bit' --- what does that mean? My reading, not knowing the terrain here, was "single '20-bit'".
StefanJK
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Doesn't sound impossible with some pre-processing...but not at all my field of expertise.
Plus an incredibly complex streaming data (audio signal) is orders of magnitude more demanding from the range hi to low than even the most stringent requirements of distributive process control analogs measurements, let alone gas chromatography. Does not look like to me that circuitry would be able to process in real time a complex word structure representing streaming audio bandwidth. But I am a chromotography specialist not an engineer so take that for whatever it's worth...
estreeter
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I'm not ashamed to admit that the technical details are way over my head, but that's fine - I just want to see Yggy in beta. purrin and jacal01 can pull theirs apart and post photos of all 7 pcbs - its time someone got some serious listening time with this dac. As purrin said, the techno babble means nothing without results.
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