New PCM1794A Kit – Balanced Mode Update – Good to Fantastic Sound! - Page 9 - diyAudio
Go Back   Home > Forums > Source & Line > Digital Line Level

Digital Line Level DACs, Digital Crossovers, Equalizers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 6th December 2010, 04:02 PM   #81
lgabco is offline lgabco  Slovakia
diyAudio Member
 
Join Date: Nov 2006
I was reading this thread and I like it. I would appreciate to see also frequency characteristics and THD figures at level of -40dB and -60dB. This could be a little bit more precise information about the converter.
  Reply With Quote
Old 7th December 2010, 07:23 AM   #82
spencer is offline spencer  Hong Kong
diyAudio Member
 
Join Date: Jun 2004
Location: Hong Kong
Send a message via MSN to spencer Send a message via Skype™ to spencer
FFT measuremend added here:
FDA-1 PCM1794A DAC new FFT measurement for full balance mode
  Reply With Quote
Old 8th December 2010, 11:17 PM   #83
diyAudio Member
 
john dozier's Avatar
 
Join Date: Dec 2010
Location: columbia sc
Default Best CD/DVD internal drive for CD transfer to HD

I have been following this thread with interest. I will probably purchase this kit after all of the great reviews. I was particularly interested in the comments about CD drive quality. I agree completely with the comments about the quality of the high frequency analong signal coming off the disc. I am currently using a four year old Dell with a very low quality CD/DVD drive which produces audible distortion on high level signals. I plan to purchase a new computer to use for disc transfer to HD. Which manufacturer uses the best quality internal drive for this purpose? I do not want to go the trouble (and expense) of an external drive or player. I have no way of evaluating the quality of internal drives and am asking for some guidance in this area. Thanks
  Reply With Quote
Old 21st December 2010, 02:18 PM   #84
TC Goh is offline TC Goh  Hong Kong
diyAudio Member
 
Join Date: Jan 2010
Location: Hong Kong
Hi John

Thanks for reading the thread. I have had lots of fun with this DAC and also many hours of enjoyment.

I hadn't thought that a disc drive will affect sound quality as these are all supposed to be manufactured to very high specs but I guess they could. However, I am a little worried that all those nasty RF and other signals within the computer may somehow creep into the audio signal, despite the fact that they are digital in nature. Do you think this is something that one should worry about?

Best wishes

TC





Quote:
Originally Posted by john dozier View Post
I have been following this thread with interest. I will probably purchase this kit after all of the great reviews. I was particularly interested in the comments about CD drive quality. I agree completely with the comments about the quality of the high frequency analong signal coming off the disc. I am currently using a four year old Dell with a very low quality CD/DVD drive which produces audible distortion on high level signals. I plan to purchase a new computer to use for disc transfer to HD. Which manufacturer uses the best quality internal drive for this purpose? I do not want to go the trouble (and expense) of an external drive or player. I have no way of evaluating the quality of internal drives and am asking for some guidance in this area. Thanks
  Reply With Quote
Old 21st December 2010, 02:39 PM   #85
diyAudio Member
 
Join Date: Jan 2009
Location: Shropshire, UK
Quote:
Originally Posted by john dozier View Post
I have been following this thread with interest. I will probably purchase this kit after all of the great reviews. I was particularly interested in the comments about CD drive quality. I agree completely with the comments about the quality of the high frequency analong signal coming off the disc. I am currently using a four year old Dell with a very low quality CD/DVD drive which produces audible distortion on high level signals. I plan to purchase a new computer to use for disc transfer to HD. Which manufacturer uses the best quality internal drive for this purpose? I do not want to go the trouble (and expense) of an external drive or player. I have no way of evaluating the quality of internal drives and am asking for some guidance in this area. Thanks
John, if you are considering a PC for audio then it would be worth building your own or specifying parts and having one built for you. I realise this may not be practical but if you are serious about computer audio then its the way to go at the moment.

Things to consider:

1) Use a solid state drive for the music files and another for the OS and playback software. These are quick, quiet and efficient.

2) Find a good power supply with low ripple and noise. Antek make good ones.

3) Remove all unnecessary cards from the PCI slots and use the least amount of drives and components as possible to reduce system noise and power supply demand.

4) If possible use passive cooling for cards and CPU. The less fans you have the better. It pays to choose a well designed case and go for AMD processors which run cooler.

A well built PC with carefully chosen and thought out components should sound as good as any digital source.
__________________
Rich
  Reply With Quote
Old 21st December 2010, 03:25 PM   #86
diyAudio Member
 
john dozier's Avatar
 
Join Date: Dec 2010
Location: columbia sc
I suspect that internal noise is my problem. Unfortunatley, I must have a laptop which llimits my options. I am looking at both Mac and Toshiba, but have no way of testing them for a clean digital ouput from their disk drives. Anyone with any experience on CD playback via external dac, with either of these makes is asked to give me their opinion. THanks
  Reply With Quote
Old 21st December 2010, 06:31 PM   #87
diyAudio Member
 
Join Date: Jan 2009
Location: Shropshire, UK
I had a MacBook and used it to play lossless music files and it sounded very decent, however not on a par with my current music PC. Toshiba make very good laptops and certainly would be cheaper. The difference could be spent on upgrading the normal hard drive to a solid state job. I cannot stress enough how much better these drives are.

The benefit of having a windows machine is the ability to use a greater variety of file types and to use Foobar with the Wasapi codec, bypassing the windows sound engine. I would recommend copying the CD's to the drive as lossless format for playback. If you have the space then choose WAV files as these take less CPU power and resources to play than Flac etc.

I think TC Goh's DAC would sound pretty damned good with either a Mac or Toshiba playing lossless files from the HD.
__________________
Rich
  Reply With Quote
Old 21st December 2010, 06:59 PM   #88
qusp is offline qusp  Australia
diyAudio Member
 
qusp's Avatar
 
Join Date: Oct 2009
Location: Brisbane, Australia
keep in mind that you have been able to run any windows, mac, or linux software natively on the mac for a number of years now,

Quote:
Originally Posted by richlund
The benefit of having a windows machine is the ability to use a greater variety of file types and to use Foobar with the Wasapi codec, bypassing the windows sound engine. I would recommend copying the CD's to the drive as lossless format for playback. If you have the space then choose WAV files as these take less CPU power and resources to play than Flac etc.
that does not apply. you can also specify SS drive as standard
  Reply With Quote
Old 21st December 2010, 07:40 PM   #89
diyAudio Member
 
john dozier's Avatar
 
Join Date: Dec 2010
Location: columbia sc
I am still tossed bewteen the Mac Probook and the Toshiba. I understand the Mac kernel is better for audio, but how are the quality of CD drives in the two machines? ALso for the same price point, I can buy a Toshiba with a 940 processor, 8gb ram, and two intel 160gb SSDS. That would buy only a basic macbook pro. What at conundrum.
  Reply With Quote
Old 21st December 2010, 08:30 PM   #90
diyAudio Member
 
Join Date: Jan 2009
Location: Shropshire, UK
I think John we should wrap this conversation up on this thread and start a new one as we are way off topic here!

To be fair, and please correct me if I'm wrong sombody, most of all CD/DVD drives are manufactured by Sony and Phillips as it was they who invented the format. Certainly all drives use their architecture. I think the difference will be with the motherboard chipset that controls the device input and output. There will not be much between the drive mechs as they are not strictly designed for audio.

I'll be brutally honest here and say that it will be a compromise to the high quality external DAC to use the laptop cd drive for audio playback. It will never be as good as a dedicated CD player with better quality mech transport. Again, brutal honesty here, there aren't many audiophiles using their computers as cd players. It doesn't make sense. Burn files to hard disk and replay lossless.

I would also say that to buy a Mac only to run windows is a bit of a waste, and believe me windows with Foobar and wasapi kernel streaming sounds superb in my opinion. The Tosh will be all you need and you don't really need the 8gb ram, 4gb will be fine. But definitely get the ssd drives.
__________________
Rich
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Hum in Balanced Mode in Balanzed Bride Of Zen Erlend Sζterdal Pass Labs 35 12th August 2010 09:17 PM
Help TDA 4X 1541 balanced Mode gil-garcia Digital Source 1 6th December 2007 05:12 PM
Anyone used a PCM1794A with balanced output? hifimaker Digital Source 11 18th March 2006 06:36 PM
PCM1798 mono mode with balanced output help mpopovics Digital Source 8 24th September 2005 11:00 PM


New To Site? Need Help?

All times are GMT. The time now is 12:48 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2