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回覆 (66): Computer and/or Network as Source
My recent visited to King and rcwy's workshop, part with 47lab transport and 27M tube pre..see, just plug and play, no trimming nor setting on the notebook.  
 
p.s. foto by rcwy
Vash
09-03-18
18:06:20
回覆 (65): Computer and/or Network as Source
well, i think limage does not need to jump on the wagon as yet. i don't have any reference transport and dac so i opt for the cas route. on top of that i want to mess around with room correction. but for limage, there shouldn't be any rush. look at the bottom line. what does one get?
drwkng
09-03-18
17:50:41
回覆 (64): Computer and/or Network as Source
>>>...i don't think apogee is any good. ...  
 
Yup., an Apogee user told me it's sound is comparable to my old M-audio !!  
 
Vash
09-03-18
17:36:25
回覆 (63): Computer and/or Network as Source
I can tell the dac portion is a very low end design. I think the cost mainly goes for the DSP and the software engineering.  
 
The main point on Firewire is peer to peer architect, or say host independent. While USB dac is slave to computer that acts as host. Get it ?  
 
Vash
09-03-18
17:31:22
回覆 (62): Computer and/or Network as Source
I am curious, what makes these HighEnd Firewire-ready DAC special. Do they use very different DAC chips (compared to the USB counterparts) or they build their DAC base on their own discrete circuitry?  
 
icefox
09-03-18
17:27:55
回覆 (61): Computer and/or Network as Source
i don't think apogee is any good.
drwkng
09-03-18
17:21:13
回覆 (60): Computer and/or Network as Source
limage,  
 
Don't give up. At least you may consider the source from both HDTT and NAIM. As I quoted days ago, HDTT promoting 15% off on all media format, worth to try.  
 
icefox,  
 
If you want some hi-end and long lasting dac, both DAD ( Digital Audio Denmark), B.A.D. ( Berkeley Audio Design) and Apogee do have such choice.  
 
DAD - http://www.digitalaudio.dk/ax24_present.htm  
 
B.A.D. - http://www.berkeleyaudiodesign.com/  
 
Apogee - http://www.apogeedigital.com/products/mini-dac.php  
 
p.s. Apogee has just discontinued the USB option for it's mini dac.
Vash
09-03-18
17:18:51
回覆 (59): Computer and/or Network as Source
Well, other than Weiss, what are the other Firewire DAC on the market?
icefox
09-03-18
16:37:01
回覆 (58): Computer and/or Network as Source
 
 
Vash,  
 
Good, I am thinking about the Weiss option quite seriously now, along with ss disc and a dedicated laptop to round off the digital arsenal.  
 
It's a pity that our Tape-to-CD trials cannot be called a complete success. It seems the road to digital bliss is not without riddles and the right way is not as clear as I would like to believe.........  
 
 
 
 
limage
09-03-18
16:28:26
回覆 (60): Computer and/or Network as Source
Anyone know of a Firewire based wireless bridge solution? The idea is to decouple your firewire port from your computer and to transfer 0&1 with a wireless bridge (e.g. Wifi or WiMax, wifi may not have enough bandwidth for 1394B).  
icefox
09-03-18
16:28:11
回覆 (59): Computer and/or Network as Source
Well if the winning equation is Mac (presumably OSX) and Firewire.  
 
I think the Ideapad S9 + 1394B Firewire Expresscard + free OSX hack on non-Mac H/W should make a good digital transport solution.  
 
As we speak, I am waiting for delivery of my latest Mac Mini :-)  
 
icefox
09-03-18
16:25:26
回覆 (59): Computer and/or Network as Source
See the "FireWire vs. USB 2.0 - Architecture" session may gives you some hints....
http://www.usb-ware.com/firewire-vs-usb.htm
Vash
09-03-18
16:24:35
回覆 (58): Computer and/or Network as Source
Forget the new Mac book, but either MacMini, MacBook Pro or Thinkpad keeps firewire.  
 
Netbook + USB dac is just a portable solution......or you should keeps an eye on USB 3.0.  
 
 
 
Vash
09-03-18
16:18:58
回覆 (57): Computer and/or Network as Source
I am confused again. Does that mean the end game is really Firewire? It all goes back to physics again?  
 
As far as I understand, electronic interface-wise, the cost differential between USB and Firewire should be negligible, there should be more budget Firewire dac out there then USB dac. Given firewire's stronger heritage in the Mac community, there should be far more audio application.  
 
As a side note, it's really bad that the latest Mac Book no longer has a native firewire port now.  
 
BTW, have you guys look at the Lenovo Ideapad S9 or S10? I think with this low cost netbook + a 1394A or 1394B Expresscard, it will make a good firewire based transport.
icefox
09-03-18
16:14:25
回覆 (56): Computer and/or Network as Source
Limage, buy yourself a firewire dac such as Weiss like me, then you just do the plug and play, sit down and enjoy. Don't waste time to mess with the tuning and setting.
Vash
09-03-18
13:06:04
回覆 (55): Computer and/or Network as Source
 
 
I am the kind of bloke who learns rather slowly and cannot jump steps. It's appropriate that I learn from the basics upwards so that I can be damn sure where I am heading. I am going for the firewire eventually, or more likely its updates by the time I commit myself.  
 
^_^  
 
limage
09-03-18
12:16:11
回覆 (54): Computer and/or Network as Source
King is right, with a firewire dac, you do no need to cater any clock or noise issue from those who use USB as an interface. Since firewire dac is host independent.  
 
Pls. corrrect me if I am wrong.
Vash
09-03-18
11:12:15
回覆 (53): Computer and/or Network as Source
limage,  
 
forget about that document. get a dac with firewire and be done with.
drwkng
09-03-18
10:57:59
回覆 (52): Computer and/or Network as Source
 
Thanks for the info, icefox.  
 
That makes good reading over the weekend. This is the area where I badly want to probe into, lest I'll be getting too much behind the times !  
 
 
 
limage
09-03-18
10:54:11
回覆 (51): Computer and/or Network as Source
Folks,  
 
I have recently bumped into this article titled, "The Art of Building Computer Transports".  
 
It's a 46 pages document. It would be a good read to kill time.  
 
I admire the attention to details the author puts on the article.  
 
For those who interested, http://photos.imageevent.com/cics/v03theartofbuildingcomputertrnsp/The%20art%20of%20building%20Computer%20Transports%20v0.3.pdf
http://photos.imageevent.com/cics/v03theartofbuildingcomputertrnsp/The%20art%20of%20building%20Computer%20Transports%20v0.3.pdf
icefox
09-03-18
00:40:30
回覆 (50): Computer and/or Network as Source
Simple!!
http://www.wenzel.com/documents/finesse.html
Hercules
09-02-14
23:16:13
回覆 (49): Computer and/or Network as Source
It's not looking good, I just added a Noise Cleaner for Stock Regulator, cost less than $10!!
Hercules
09-02-14
23:12:29
回覆 (48): Computer and/or Network as Source
i sold it before it gathered too much dust and be wasted away.  
--------------------  
 
mine even worse, it's been collecting dust for more than a year.  
 
may be it's time to let go......
mdlover
09-02-13
17:06:49
回覆 (47): Computer and/or Network as Source
i made a dedicated linear power supply for my SB. and connected it using an optics usb converter. i can't day it is night and day. and i did use nos 64x1543 dac. it was fun. it is just a toy to play with for a while. i sold it before it gathered too much dust and be wasted away.
drwkng
09-02-13
11:56:28
回覆 (46): Computer and/or Network as Source
dr king, if external dac is used, SB is better matched with 16bit nos style dacs as my experience is somehow the nature of these dacs can help soften the sound and make it more listen-able, i.e. precisely to counter the 'hardened' presentation from using the coax interface. it'd be nice to have a good power supply for SB too. relatively good sound can be achieved this way.
mahi
09-02-13
11:49:23
回覆 (45): Computer and/or Network as Source
Good news !!! Good news !!!!!!!  
 
 
 
Vash
09-02-13
01:28:32
回覆 (44): Computer and/or Network as Source
Vash:  
 
Just discovered I didn't give enough voltage to the oscillator of my MD-10 so I have the problem of doubled sampling frequency locked last time.... now solved....sound a lot better now...
Hercules
09-02-13
01:01:03
回覆 (43): Computer and/or Network as Source
i used to have a SB. since i had an open kitchen, i think i'm qualified to tbe one hat has a sb in the kitchen. seriously, with an external dac, i think the difference between transporter and sb is rather small.
drwkng
09-02-12
19:30:02
回覆 (42): Computer and/or Network as Source
dr king, i'd say SB, using analogue out and in stock form, is very convenient and cheap, but are better served in kitchen and toilet.
mahi
09-02-12
19:16:45
回覆 (41): Computer and/or Network as Source
is drwkng=dr.king?  
------------  
yes, at your service^-^
drwkng
09-02-12
19:03:50
回覆 (40): Computer and/or Network as Source
is drwkng=dr.king?  
 
Welborne
09-02-12
18:58:31
回覆 (39): Computer and/or Network as Source
if we ignore the sound quality aspect of the transporter, it is indeed very convenient but then why not just use the squeeze box. it is a lot cheaper and you can have many more units including one in every toilet as well^-^
drwkng
09-02-12
17:14:16
回覆 (38): Computer and/or Network as Source
i agree too the 'transporter' name is a misnomer, because if one uses it to replace a CD transport for his dac, then he subjects himself to the same bottleneck, i.e. coax interface, and needs the same remedies, i.e. reclocking at dac or clock sync.  
 
without good jitter busting downstream, my limited experience suggested transporter alone could sound better than connecting to a dac.  
 
i too don't think the transporter analogue sound is quite there yet. but cost wise and for some non-hifi consideration (e.g. expandability - that i can add more units anywhere in house, listen to same/different music, while using the same interface is nice)  
mahi
09-02-12
17:07:27
回覆 (37): Computer and/or Network as Source
Truly agree with Dr King that those lousy PCM chipsets which intended for mass market is the one who responsible for those lousy sound.  
 
During our testing in last Saturday, we take the I2s connection directly from PC to DAC though a Julia sound card, the effect is much better. There are almost no major different in sound quality between the CAS and the transport. The problem is that not all DAC support i2s connection.
accphoto
09-02-12
13:57:36
回覆 (36): Computer and/or Network as Source
the problem with usb is not the protocol. you can't really talk about jitter with usb. usb is a packet based protocol not too different than an ethernet connection. the problem with using usb is the chip set that is responsible for converting usb to audio signal. it is at that time that jitter comes into the equation. of course coupled with the desire to use stnad usb audio protocol there is not many choices. for most usb implementations, they tend to use cheap ready made chip sets. it is all within the usb 2.0 spec to built a custom hardware to transfer data to and from the usb all the way to 192khz/24bit. not too different than a transporter. i know emu 0404 doesnot use the pcm27xx. i don't know whether they develop propreitary hardware or off the shelf parts but they use different transfer protocal than usual adaptive as in pcm27xx.  
the problem with transporter is that it is as good as its spdif converter for external dac interface.so we back to square one as far as jitter is concerned. you need a decent dac to tackle that. of course if you use its built-in dac, that is not the issue. but the quality of the built dac is a bit iffy. you can't just use any media player as well.
drwkng
09-02-12
13:42:26
回覆 (35): Computer and/or Network as Source
I still think to get USD 1.7k with Mac + Firewire DAC is difficult as there are not many DAC with Firewire. A second hand MACbook may be only about HKD 4-5K.
accphoto
09-02-12
13:04:53
回覆 (35): Computer and/or Network as Source
i also want to add the two method aren't very different afterall.  
 
inside a transporter, it's essentially just a striped down single purpose computer + dac section. you just don't see it from outside.
mahi
09-02-12
13:04:38
回覆 (34): Computer and/or Network as Source
oh, i didn't mean all laptops are lousy and not good for audio, i meant the fireware can cure most problems upstream then just a cheapo laptop or pc will do the job.
mahi
09-02-12
12:58:04
回覆 (33): Computer and/or Network as Source
vash and drwkng hing,  
 
i can see a lot of reasons why people opt for usb connection as opposed to slimdevice's wifi server/client mode. in fact, once i was very tempted to buy the dac 2 too when i saw the introductory offer.  
 
if a fireware dac can effectively deal with jitter, then using it with a lousy laptop and an ipod touch is the way to go. but people are reporting different sound from changing USB cables, that suggests there might be more than we think we understand.  
 
anyway, how to go under US1.7k with fireware mac and dac ah?  
mahi
09-02-12
12:54:24
回覆 (32): Computer and/or Network as Source
King is right and that's why I chose Thinkpad + Weiss DAC2 with firewire.  
 
^_^  
 
Vash
09-02-12
12:11:26