Massdrop x Airist Audio R-2R DAC

coffeelam

https://www.massdrop.com/buy/mas ... udio-r-2r-dac#specs

有乜意見好似幾好

fatyee

有乜意見好似幾好
coffeelam 發表於 2018-7-24 11:27

唔係已經完左 drop 咩? 好似暫定第一批要年尾先出.

coffeelam

唔係已經完左 drop 咩? 好似暫定第一批要年尾先出.
fatyee 發表於 2018-7-24 13:48

咁都可以discuss 或者突然間又有 drop, who knows

fatyee

咁都可以discuss 或者突然間又有 drop, who knows
coffeelam 發表於 2018-7-24 13:55

因為佢係第一批, 未有貨真係好難知好唔好...
只係知佢初開 drop 時鬧出話佢個 R2R 板係抄人地既, 唔知最後係點.
大約 3000 我覺得幾抵玩, 曾經有心動想買, 不過最後都係冇 drop 到.

coffeelam

因為佢係第一批, 未有貨真係好難知好唔好...
只係知佢初開 drop 時鬧出話佢個 R2R 板係抄人地既, 唔知最 ...
fatyee 發表於 2018-7-24 14:19

只係知佢初開 drop 時鬧出話佢個 R2R 板係抄人地既, 唔知最後係點.  <<    不了了之  原訴人唔見咗

coffeelam

間嘢話係自己develop 但睇番最後 massdrop 嘅 statement 我覺得應該係抄

fatyee

間嘢話係自己develop 但睇番最後 massdrop 嘅 statement 我覺得應該係抄
coffeelam 發表於 2018-7-24 14:24

原訴人唔見左咁搞野?
我冇睇到最後, 佢最後 statement 係點?

coffeelam

原訴人唔見左咁搞野?
我冇睇到最後, 佢最後 statement 係點?
fatyee 發表於 2018-7-24 15:59

https://www.head-fi.org/threads/ ... -350.881315/page-12

post #178, paragraph 5-8

While this was happening, we were able to speak with the engineering manager from Airist and his contract engineer. The engineer explained his process; initially he was provided with a set of specifications, a mandate for a ladder arrangement that would meet the specs of William’s overall design (the top PCB represents ~25% of the overall RDAC design). Given that mandate, he began searching for reference material, and discovered this reference design posted for free use (says that on the post) in 2014: http://bbs.hifidiy.net/forum.php?mod=viewthread&tid=994769


From the basis of this reference design, he looked for examples of layouts that could provide a good baseline, while allowing him to build the underlying structure to serve the purpose of William’s design. Important note here, PCBs have multiple layers, the top board of the RDAC has four. The top layer is where components are positioned, but the content of the other layers determine how those components interact.


At this point, the engineer found the Hibiki DAC, and while the same configuration of parts wouldn’t yield the desired result, the general layout would work for this project, so he used it as a reference and creating the RDAC top PCB layout. This is why it looks the same, and why we subsequently posted as much in our discussion. My wording could have been more direct, but it’s not an exact copy, so “inspired by” seemed like the best option, but ultimately it was more confusing than clarifying. The position of parts is nearly the same, but sosolar continued to post, accusing Airist’s team of reverse engineering the board, which isn’t the case.

原告之後再冇出聲.
嗰個 ceo William Tse 又話自主研發咗兩年. 原來個resistor ladder 係請槍.  請槍得嚟又用人哋個design 做baseline/reference 真係笑甩嘴
條友唔知係大陸人香港人定係台灣人

fatyee

post #178, paragraph 5-8

While this was happening, we were able to speak with the engineering m ...
coffeelam 發表於 2018-7-24 16:09

條友唔知係大陸人香港人定係台灣人 <-- 邊個? 原告好似係大陸人, 佢好似話黎緊個展定年尾個展佢會有新野出.

coffeelam

條友唔知係大陸人香港人定係台灣人
fatyee 發表於 2018-7-24 16:33

Airist CEO
https://www.linkedin.com/in/william-tse-564b4869/

Accomplishments
William has 4 languages4
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Languages
Cantonese English French Mandarin