NAS Streaming可以比CD靚聲嗎？CH Precision C1來告訴你

mufans

PhantomGTR 發表於 2014-7-21 11:18
唯有一個火牛開四個輸出頭，當然佢地都係要同 volt。

都係辦法,但都揾一隻多過兩個output而又同volt數真不易
所以我仲未試fiber converter呢!

PhantomGTR

mufans 發表於 2014-7-21 11:35
都係辦法,但都揾一隻多過兩個output而又同volt數真不易
所以我仲未試fiber converter呢! ...

搵呢到呢師兄訂做就可以了，多得呢到熱心的師兄，我有個一台四個輸出的 12V LPS，及一台四個輸出的 5V LPS。
同埋 fibre converter 要買 DLINK，真係唔同聲的。

mufans

PhantomGTR 發表於 2014-7-21 12:00
搵呢到呢師兄訂做就可以了，多得呢到熱心的師兄，我有個一台四個輸出的 12V LPS，及一台四個輸出的 5V LP ...

請痲煩pm邊位師兄吖!  唔該哂!

PhantomGTR

OK, please check PM  

TangYiuChun@FB

nickif 師兄: 謝謝你的分享. 小弟亦是C1用家, 非常同意要靚聲便要從各方面入手(如LPS, SSD…等等). 請問你作結論前有沒有和D1 A/B 比較?

diamondblack

ballgor 發表於 2014-7-21 11:26
Can you share 怎樣rip CD?

我認真搞了rip CD一年幾，我認為bit-for-bit perfect是一句“你亞媽是女人”的廢話。從電源，電腦組件著手去減少rip CD系統的電噪雜訊是得到好聲的rip的重要環節。

我用Naim的Unitiserve rip CD，說穿了是一部已經是上幾代的fanless電腦，行SSD，OS是一個trimmed-down的Windows XP，據說rip碟的程式是EAC。由於是廠機，我是從電源落手調教。現在要造一台比我用的先進，用更好的硬件、作業系統的電腦已經不是什麼難事，還可以透過，在機內多加屏蔽、filters，清減作業系統等令系統更寧靜暢順。要深究的部分可以很多！

charleslinnfans

PhantomGTR 發表於 2014-7-21 12:00
...同埋 fibre converter 要買 DLINK，真係唔同聲的。

Is it really necessary to buy fibre converter for good sound ?
How about just buy 1 dlink "green" switch hub (min is 5V/1.2A with 5 plug-in), less 2 DC power inputs for lan-to-fibra converter, less interference to your home's electricity.
http://www.dlink.com/us/en/home- ... t/switches/go-sw-5e

P.S. Of course the switch hub must also use LPS to give DC power supply - more smooth music you can get.

diamondblack

charleslinnfans 發表於 2014-7-21 14:41
Is it really necessary to buy fibre converter for good sound ?
How about just buy 1 dlink "green" ...

The use of optical fiber is not merely for network isolation, it acts like a filter in the signal path. Using a switch is not that efficient in achieving what you want to. The number of active linear power supply in your home electricity circuit is a much lesser concern in this regard.

adyc

diamondblack 發表於 2014-7-21 14:24
我認真搞了rip CD一年幾，我認為bit-for-bit perfect是一句“你亞媽是女人”的廢話。從電源，電腦組件著 ...

I am sorry I do not agree. There is no noise containment of digital file! Digital is digital. If this is the case, copy one excel file to another folder in a noisy computer will change the excel file which is simply not true. One can always use accuraterip to compare ripped file to the database. Since all computers have different noise level, if your theory is right, there will not be agreed accuraterip copy.

Digital music playback is analog phenomenon. Computer noise can definitely can travel from the computer to DAC to raise the noise level. But not ripping files!

sugarman88

charleslinnfans 發表於 2014-7-21 14:41
Is it really necessary to buy fibre converter for good sound ?
How about just buy 1 dlink "green" ...

a switch does not do what the fiber converter provides - filter out the power noise in your LAN. try it and you might like it
again, if you have wifi router at home, you might not need an additional switch since most of the router comes with 4 switch ports.....again it is worth to feed it with LPS

diamondblack

adyc 發表於 2014-7-21 15:07
I am sorry I do not agree. There is no noise containment of digital file! Digital is digital. If t ...

Have you experimented what you said?

PhantomGTR

charleslinnfans 發表於 2014-7-21 14:41
Is it really necessary to buy fibre converter for good sound ?
How about just buy 1 dlink "green" ...

The answer is in #51 & #53.

adyc

diamondblack 發表於 2014-7-21 15:10
Have you experimented what you said?

I have experimented many times. Using laptop, desktop, usb cdrom, in built dvd drive always produce the same file and same sound to me.

That is why digital is a superior storage medium to analog. One can always store many identical copies. Noise can appear in digital to analog conversion.

Good luck to you. If you move your ripped file to a backup drive, you may change the file.

里克1

分別發生在rip碟, rip 咗做file 之後copy 應不會有改變.

charleslinnfans

sugarman88 發表於 2014-7-21 15:07
a switch does not do what the fiber converter provides - filter out the power noise in your LAN. t ...

I use switch hub instead of going through router because of avoid wifi router so much noise. So NAS -> Switch hub -> DS Player. And Switch hub also connect another lan cable to Wifi router for remote playlist control (Kinsky).

P.S. Those 2 additional fibre converter should also generate some noise because 2 more digital devices.
That's why I use Carbon Mold Tube to shield all LAN cables. Really need chance to compare which approach is more effective.

CKKeung

ballgor 發表於 2014-7-21 11:26
Can you share 怎樣rip CD?

Martin Colloms and members of the HiFi Critic forum in UK say that linear PSUs for Optical writers used for ripping CDs affected the sonic quality of the ripped files. Martin Colloms even tried different feet on his Naim Unitiserve and reported a small difference in SQ of the rip.
http://forum.hificritic.com/default.aspx?g=posts&t=731
http://forum.hificritic.com/defa ... 3&p=2#post11887
http://forum.hificritic.com/defa ... amp;t=897#post12558
http://forum.hificritic.com/defa ... p;m=13049#post13049
http://forum.hificritic.com/yaf_ ... orks.aspx#post16767

里克1

rip 碟就好似消磁, 除靜電. 有人話有分別, 有人話冇.
如果做咗消磁除靜電會聽出分別的話, rip 碟都會聽出分別.  因為主要分別在於讀碟一刻.

sugarman88

charleslinnfans 發表於 2014-7-21 16:35
I use switch hub instead of going through router because of avoid wifi router so much noise. So NA ...

If your wifi router is connected with your switch, then it is almost the same as using the wifi router switch port as they are all connected within the same LAN. For adding a pair of fiber converters before your player (Linn DS), it will filter our the noise within your LAN as those fiber ports transfer in light and the last mile to your player should be cleaner. Therefore, many of us found the background is darker, more quiet.
Again, I can only speak for my personal experience.

adyc

里克1 發表於 2014-7-21 16:27
分別發生在rip碟, rip 咗做file 之後copy 應不會有改變.

Ripping from cdrom to harddisk is also digital to digital operation. Of course, there can be reading errors by laser. That's why all the ripping programs have reread functions to make sure the ripped data are consistent. Furthermore, one can use accuraterip database to compare one ripped copy to the others one. Since this involves many brands of computers and cdrom drives, is it pure luck that I always come to same checksum as the rest?

Fromw Wikipedia:

A checksum or hash sum is a small-size datum computed from an arbitrary block of digital data for the purpose of detecting errors which may have been introduced during its transmission or storage.

adyc

CKKeung 發表於 2014-7-21 16:38
Martin Colloms and members of the HiFi Critic forum in UK say that linear PSUs for Optical writers ...

Martin Colloms is just one data point. How about other audiophiles cannot detect such a difference? Let me be clear:

1. bit-perfect playback can be different because of noises can transmitted to your dac and ultimately to your loudspeakers.

2. bit-perfect copy is not affected by computer noise.