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[#1] eeePC & USB DAC - Computer As Source (CAS) in a SIMPLE way    
While I enjoyed very much reading the thread "最勁 HTPC 有可能靚聲過 CD 機嗎?", I found that discussion is going too complicated with the HTPC set up. There must be a easier way to make computer as source. I think eeePC is one way to make CAS easy with audiophile audio performance. eeePC with SSD storage is so quiet that it does not require much tweak to give a quiet digital source.

For the low end, eeePC 901 + USB Monica is not costing much.
For the higher end, eeePC 901 + Benchmark DAC1 USB + cable tweak (Opticis Optical USB Cable + TOD1) will meet more experienced and demanding audiophile.

Software:

cPlay gives the best audiop performance I tried so far.
ASIO4ALL is a must and it is easy to install.
foobar 0.8.x is very good (foobar 0.9.x is not good in audio performance). foobar 0.8.x needs a ASIO plug-in from Otachan to make it support ASIO.
EAC - Exact Audio Copy is excellent way to copy CDs. One may use other ripping software as well.

It is great that all the above software are freeware. You don't need to pay for these excellent software.

I hope we start a SIMPLE Audiophile Computer As Source discussion here. Don't make it too complicated. Just like eeePC, it should be easy for everybody.
3zone
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203.xxx.xxx.20
2008-08-31 12:36
[#2] eeePC & USB DAC - Computer As Source (CAS)    
These articles are great for beginners!
http://www.computeraudiophile.com/node/300
http://www.computeraudiophile.com/node/336
http://www.computeraudiophile.com/node/358
http://www.computeraudiophile.com/node/452
http://www.computeraudiophile.com/audiophile_reference_music_servers_osx_windows
http://www.computeraudiophile.com/node/417
CKKeung
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116.xxx.xxx.102
2008-08-31 12:53
[#3] eeePC & USB DAC - Computer As Source (CAS)    
oh, i support this thread. Not all music lover is computer expert. It would be more beneficial to more people if things can be made easier or there is a conclusion from those HTPC discussion experience so that one goes out to buy a eeepc, download some software, get an exteral harddisk for storage, buy a DAC, set a few things up and then up and flying.
welborne
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125.xxx.xxx.73
2008-08-31 13:47
[#4] eeePC & USB DAC - Computer As Source (CAS)    
我也是用eeepc當 CAS,也另外diy HTPC 。其實二者是不同的動物,一個以方便為主,一個就有很大空間讓用者選擇、追求完美。
補充一點,用eeepc當CAS 不一定限死用USB DAC,買個USB-spdif converter就可以,USB monica 其實也不便宜,這個價錢可以在內地買到更好的DAC.另, ASIO4ALL 出了新 version, 2.9 beta2
drcy
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59.xxx.xxx.251
2008-08-31 14:25
[#5] eeePC & USB DAC - Computer As Source (CAS)    
Hi 3zone

What about if I use a Mac notebook with Mac OS not Windows instead of a eeePC? Would you please tell me how to set it up as a music source?
GY2004
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218.xxx.xxx.41
2008-08-31 14:29
[#6] eeePC & USB DAC - Computer As Source (CAS)    
"What about if I use a Mac notebook with Mac OS"

I have no experience in setting up Mac. So you may open another thread to discuss specific on Mac.
3zone
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203.xxx.xxx.20
2008-08-31 16:54
[#7] eeePC & USB DAC - Computer As Source (CAS)    
Some guys run Mac OS on eeepc oh!
zbigniew821
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203.xxx.xxx.4
2008-08-31 17:00
[#8] eeePC & USB DAC - Computer As Source (CAS)    
Not a Macbook though ...
zbigniew821
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203.xxx.xxx.4
2008-08-31 17:01
[#9] eeePC & USB DAC - Computer As Source (CAS)    
"用eeepc當CAS 不一定限死用USB DAC,買個USB-spdif converter就可以"

Yes, definitely work from technical point of view. Reason I mention USB DAC is to make it simple for everybody. A good SPDIF cable can be expensive. Getting SPDIF in the middle will not give any benefit to audio. In fact, it creates a potential performance bottleneck.

If CAS is what we want, then better use a DAC design for CAS which include USB interface to make it really simple for everybody. That is the reason I'm not interested in the professional sound card or USB to SPDIF converter etc.
3zone
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203.xxx.xxx.20
2008-08-31 17:06
[#10] eeePC & USB DAC - Computer As Source (CAS)    
Getting SPDIF in the middle will not give any benefit to audio. In fact, it creates a potential performance bottleneck.

不明白,為何不利?

then better use a DAC design for CAS which include USB interface to make it really simple for everybody.

其實很多 DAC 的 USB 接口也只是用一粒 PCM 2702 / 2902 轉同軸信號入 DAC receiver,在外在內也是一樣東西。轉接器其實非常方便,體積只不過像一排香口膠。

drcy
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59.xxx.xxx.251
2008-08-31 17:54
[#11] eeePC & USB DAC - Computer As Source (CAS)    
drcy, to asnwer your question, it is going to make this thread going to be another technical discussion deviated from the original purpose.

My understand is that most DAC internal digital signal standard is I2S. When we connect SPDIF to DAC, it will be convereted to I2S. If my output is USB, I want a DAC which accept USB and convert to I2S directly internally. I don't want it to be converted to SPDIF and then from SPDIF to I2S. Each conversion is not going to perfect. We better minimize conversion to get better sound. Please tell me what is the value of SPDIF if there are plenty of DAC already support USB directly???

I'll consider such converter if I already own a DAC without USB support. I have no choice. But if I buy a new DAC which is for the purpose of connecting to eeePC, I would not consider any DAC without USB support.

By the way, I have used SPDIF before (non pc audio setup) and I own 4 coaxial cables from HK$100 and HK$3,000. SPDIF signal is sensitive to the cable quality. A good cable really make a different. Why I spend $ on SPDIF if it is not helping me improve the sound?
3zone
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203.xxx.xxx.20
2008-08-31 18:39
[#12] eeePC & USB DAC - Computer As Source (CAS)    
Just have a quick initial draft of USB DAC in the market for reference. Welcome brother to update.

USB Monica
Apogee Mini DAC USB
Benchmark DAC1 USB
Benchmark DAC1 Pre
Stello DA100
Musiland MD10 USB DAC
Wavelength Proton USB DAC
Wavelength Brick USB DAC
AQVOX USB 2 D/A
3zone
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203.xxx.xxx.20
2008-08-31 19:05
[#13] eeePC & USB DAC - Computer As Source (CAS)    
If you want to play 24/96 records. The choice of USB DAC are:

1. Benchmark DAC1 USB
2. Empirical Audio Spoiler USB tube DAC
3. Wavelength Audio Crimson
4. E-MU 0404 USB 2.0

Source:

http://www.computeraudiophile.com/node/58?page=1
3zone
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203.xxx.xxx.20
2008-08-31 19:10
[#14] eeePC & USB DAC - Computer As Source (CAS)    
The list from Computer Audiophile was late 2007 version. Of course, Benchmark DAC1 Pre and Wavelength Proton & Brick support 24/96 as well.
3zone
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203.xxx.xxx.20
2008-08-31 19:16
[#15] eeePC & USB DAC - Computer As Source (CAS)    
drcy, i read your post again and you made a very good point. "其實很多 DAC 的 USB 接口也只是用一粒 PCM 2702 / 2902 轉同軸信號入 DAC receiver"

I think better find out which product implemented such quick and dirty way to support USB. I would avoid these products which did not spend effort to design their product to optimize for USB.
3zone
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203.xxx.xxx.20
2008-08-31 19:21
[#16] eeePC & USB DAC - Computer As Source (CAS)    
3zone:
在你推薦的DAC 清單上,Stello DAC 100 及 Musiland (樂之邦) 就是用 chip 轉 USB 為 spdif,不信你可以發email問廠家。
drcy
個人訊息 會員
59.xxx.xxx.251
2008-08-31 19:59
[#17] eeePC & USB DAC - Computer As Source (CAS)    
drcy, please understand that I'm not "推薦" anything. I just initiate to summarize information for sharing. Let me say "True USB Support" means support USB directly rather than just adding a converter from USB to SPDIF. I'm updating USB DAC list as followed:

USB Monica - True USB Support
Apogee Mini DAC USB - ?
Benchmark DAC1 USB - True USB Support, 24/96 on USB
Benchmark DAC1 Pre - True USB Support, 24/96 on USB
Stello DA100 - Built-in USB SPDIF Converter
Musiland MD10 USB DAC - Built-in USB SPDIF Converter
Wavelength Proton USB DAC -True USB Support, 24/96 on USB
Wavelength Brick USB DAC -True USB Support, 24/96 on USB
Wavelength Crimson DAC -True USB Support, 24/96 on USB
AQVOX USB 2 D/A - ?
E-MU 0404 USB 2.0 -? , 24/96 on USB
Empirical Audio Spoiler USB tube DAC True USB Support, 24/96 on USB
3zone
個人訊息 會員
203.xxx.xxx.20
2008-08-31 20:10
[#18] eeePC & USB DAC - Computer As Source (CAS)    
USB Monica - True USB Support, NO 24/96 on USB
Apogee Mini DAC USB - ? , NO 24/96 on USB
Benchmark DAC1 USB - True USB Support, 24/96 on USB
Benchmark DAC1 Pre - True USB Support, 24/96 on USB
Stello DA100 - Built-in USB SPDIF Converter, NO 24/96 on USB
Musiland MD10 USB DAC - Built-in USB SPDIF Converter, NO 24/96 on USB
Wavelength Proton USB DAC - True USB Support, 24/96 on USB
Wavelength Brick USB DAC - True USB Support, 24/96 on USB
Wavelength Crimson DAC - True USB Support, 24/96 on USB
AQVOX USB 2 D/A - ? , NO 24/96 on USB
E-MU 0404 USB 2.0 -? , 24/96 on USB
Empirical Audio Spoiler USB tube DAC - True USB Support, 24/96 on USB
3zone
個人訊息 會員
203.xxx.xxx.20
2008-08-31 20:24
[#19] eeePC & USB DAC - Computer As Source (CAS)    
Interesting example.

http://moshang.wordpress.com/2008/07/07/eeepc-901-got-it

3zone
個人訊息 會員
203.xxx.xxx.20
2008-08-31 21:50
[#20] eeePC & USB DAC - Computer As Source (CAS)    
Another Example.

http://www.odysseyaudiohk.com/cgi-bin/yabb/YaBB.pl?num=1216221483

3zone
個人訊息 會員
203.xxx.xxx.20
2008-08-31 21:57
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