[開箱] 紫珊 DSD 999RMB version unboxing

Jason@YIU_SHUN

Just Received it on Sunday , outlook as same as 749 version . Let's take apart it directly .

2019-12-3 14:39

2019-12-3 14:39

12v as standard for this version
opamp for 3.5mm become dual OPA627AU now
for Balanced 2.5mm , opamp will be pair of AD8620

In my personal view , the Philips caps ( 100uF / 10v ) make me feel a bit upset . My friend's 749 RMB version comes with Nichicon FW caps ( 100uF / 16v ) ... so I got some tricky things during my lunch time

Audio Note 快晴電解電容 ( 100uF /16v )

2019-12-3 14:44

And then find a shop solder it for me , the solder for these 4 caps also from Audio Note ( with 6 % silver )
There are 10 pins for connecting 2 boards at this player , all 10 pins feed with Furutech Nano Liquid

2019-12-3 14:56

For the micro SD Card Reader , 2.5mm plug , 3.5mm plug , the micro USB port , shielded by Oyaide MWA-010T tape

2019-12-3 14:58

出來的效果非常滿意，層次感有提昇，女聲比起我搞事前多左一份貴氣及亮麗感

2019-12-4 10:12

另外，想知道頂頭果 4粒鉭電容可否換一些更高級的牌子？佢果塊3.7v 3000mAh 的電池有日系牌子可更換嗎？

waltyuen

華麗 感 換電容
大size 有得換 聚合物的鉭質

Jason@YIU_SHUN

一個已經過氣既 12V 摩改用家..

你要好好保護 2.5 母插..
dlsharesun 發表於 2019-12-4 12:29

2.5 插死咪換過隻, farnell 同 elements14 應該訂到 …

真係成份野 total loss 我咪正經入隻 AK  

No matter , thanks for your advise

Jason@YIU_SHUN

厲害厲害，多謝分享，AD8620，家中仲有一揸係度，差點遺忘了
tskso 發表於 2019-12-4 16:29

    一收貨巳是AD8620了

我只係換左 4 粒 cap （用 audio note d 錫來焊 ），再重新用 audio note d 錫焊過對 AD8620, 黐 oyaide 隻膠紙落2.5 同 3.5 位加落 d 古河神油落果 10 支針度咋嘛⋯⋯

但好似補品錢仲貴過隻野

pallee

AD8620 is good stuff. FET low input impedance is good for DAC output LPF.

OPA627 may be too old in terms of design and ratings. Newer opamp may be better (line driver, buffer).

An interesting thing is the capacitors. Photo shows that LPF output capacitors are e-cap and line output capacitors are ceramic cap. I think the selection should be reversed. LPF uses ceramic cap (small signal, more accurate) and line output uses e-cap (large signal, more musical).

Jason@YIU_SHUN

AD8620 is good stuff. FET low input impedance is good for DAC output LPF.

OPA627 may be too old in  ...
pallee 發表於 2019-12-4 23:35

Does it means that I should keep the ceramic cap and just re-solder it by own Audio note solder ?

Thanks for kindly feedback ching ~