國產DSD 解碼 - SABRE DA8 DSD 384KHZ 32bit DAC

chhanthony

bh7ohl 發表於 2013-5-11 00:06
不要小看国产货,更不要对自已没信心.认为指标标高了就一定是假的(事实上确有不少机器是照抄芯片指标来蒙 ...

經過咁多線路，個DNR數值重竟然可以保持到同粒DAC chips嘅數值一樣，真係堅!

cwtim01

I come across this thread accidentally via Google, but can't help to create a new account and comment.

I have been a user of the Yulong D18+A18 combo for more than a year and have been pretty happy with it. I learnt about Yulong not from Mainland, not from Hong Kong, but from the US (through head-fi.org). For those who care to research, the D18+A18 combo can stand shoulder to shoulder to the Violectric V800+V200 combo, while having a cost benefit. Yulong has gained very good reputation among the most reputed head-fiers, and their products have very good resale value in the US.

While serious designers from China are gaining acceptance and trust in the World, many messages in this thread, from us Chinese in Hong Kong, are simply discarding the hardwork and progress of the serious Chinese developers. This is really disappointing. Admittedly far too many Chinese products are faked and flawed, but lets at least check before we discard them.

By the way, those comments made by "eyebyeye" really made me laugh, but I don't need to prove him wrong anymore as others have done so, fortunately there are still some good people here.

cwtim01

bh7ohl 發表於 2013-5-10 20:45
它不只是使用ESS9018,而且在各个环节上都下足了功夫.进一步了解可以看方框图

USB供电在不同的电脑端口声 ...

小龍師傅，你那張圖是我有份翻譯的

http://www.head-fi.org/t/648674/yulongs-new-da8/75

rogerchou

看到這個討論串,真讓人洩氣...post76真的是沒落沒人才了?還是沒人有勇氣反駁那位eyebyeye?
DAC在輸出時電壓"V"是固定值,根據你的耳機(負載)聽音量的大小決定最終輸出功率,因此DAC輸出電流會根據當時耳機在不同頻率的阻抗變化下輸出不同電流,這是所有音響電路的最基本常識。. 請eyebyeye不要亂用歐姆定律,你的程度完全是填鴨式教育訓練出來的蠢貨,歐姆定律的恆等式不是隨你高興在任何時間點置換的,"在DAC這個輸出設計上",電壓V就是固定的(無論你的DAC是否有設置Gain的調整高低值),就能算出不同耳機在不同音量下的I與R來,並根據I與R來決定當時的輸出功率。
再來,高阻抗耳機需要比低阻抗耳機需要更大力去推?如果你eyebyeye指的"力"是消耗功率的話,就是胡扯!就絕對值來看,低阻抗耳機往往需要較大的消耗功率,套套上述公式便知。高阻抗耳機往往更需要耳擴是因為一般的隨身裝置或PC與NB沒有很高的輸出V,所以在高阻抗下電流輸出相對很低很低,其所輸出的功率難以推動大型動圈式高阻抗耳機...專為高阻抗耳機設計的耳擴都是High Gain的,即所謂高電壓模式,目的是要輸出"相對"大的功率驅動高阻抗耳機,這即是高阻抗耳機需要高的電壓擺盪的由來。但往往high gain的耳擴推低阻抗耳機不好聽也不適合,用上述公式多想想就知道原因了。
我不是中國人,也不住在亞洲,也沒使用過這家公司的產品,更不認識那位設計者...但我要說的是:凡是有真相,別胡扯!!!

bigjohnx

電子我不太慬....不能插嘴.

對於小龍的產品, 小弟有幸試用從朋友借來早期的YuLong 產品(那個是16-20bit dac 但不記得是那model), 感覺良好, 調聲ok. 當然, 受硬件及成本所限, 當然會有唔完美既地方. 但比起當年同類產品, 確實令我印象深刻.

不知香港那裏有得試聽? 若有的話我也想一試.

利申: 本人不是YuLong 用家, 現時用 Linn Majik & Teac UD-501

karsonkwan

bigjohnx 發表於 2013-5-30 09:48
電子我不太慬....不能插嘴.

對於小龍的產品, 小弟有幸試用從朋友借來早期的YuLong 產品(那個是16-20bit da ...

香港有我早就去左試了

bigjohnx

karsonkwan 發表於 2013-5-30 13:44
香港有我早就去左試了

深圳有無?

唔好話去華強果D耳機店......果度D店播出黎簡直將部機放入火坑.

karsonkwan

bigjohnx 發表於 2013-5-30 14:02
深圳有無?

唔好話去華強果D耳機店......果度D店播出黎簡直將部機放入火坑. ...

佢唔係華強果邊, 我問下再PM你
華強果D耳機店係邊D?  華強萬商果邊都有唔小好野, 好多百萬元級音響

obee

rogerchou 發表於 2013-5-30 04:16
看到這個討論串,真讓人洩氣...post76真的是沒落沒人才了?還是沒人有勇氣反駁那位eyebyeye?
DAC在輸出時電壓 ...

兄台, 只係一個member 講錯野姐, 使唔使引申到咁大: "post76真的是沒落沒人才了?"

karsonkwan

kenneth_obee 發表於 2013-5-30 17:15
兄台, 只係一個member 講錯野姐, 使唔使引申到咁大: "post76真的是沒落沒人才了?"   ...

咁未必個個人材睇呢個POST掛...