Blu ray player as cd transport
- Thread starter Dr.Kumar
- Start date
Yes. There have been a few discussions among hfv members on this, pl search the threads. I am using my 4 yr old dvd player (philips) as transport with co-axial out to MF V-II Dac with excellent results. You could compare the sound output from the bdp through the dac with the sound from the bdp's dac by connecting the bdp to your amp through rca cable and look for any difference,
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reignofchaos
Well-Known Member
Yes you can - but again what kind of sound quality you will get depends on your downstream equipment.
Transports do affect sound quality and quite massively if the rest of the chain is resolving enough.
but the problem is you have other people saying it makes no audible difference?
What music do you listen to by the way?
reignofchaos
Well-Known Member
Primarily a lot of rock with some jazz and classical. If someone says they've not heard a transport make a difference, I'm sorry to say he/she's either tone deaf or doesn't have a chain resolving enough to hear the difference.
There is no difference if you use Co-ax out or HDMI out. This is not some exotic field or rocket science. It's simple physics.
However, if you want to believe there is a difference, then you will hear it right away.
However, if you want to believe there is a difference, then you will hear it right away.
koushik
Well-Known Member
Yes, transport makes night and day difference. A feathery el-cheapo DVD player's transport is no match to VRDS or Metronome Kalista etc ... I know the price is also day and night - but YES, it does make a difference.
paritosh
Active Member
The equipment converting digital data to the so called sound signal is the one that makes the difference.
If you are taking analogue out directly from your disk player then the conversion is done by built in DAC inside the player. Other than dedicated CD players, not many BDPs or DVDPs do this job well.
If you are using a dedicated DAC, than you are simply transporting digital data from your player to your DAC through HDMI or optical or co-axial out and leaving the co version job to DAC which is a prefered option in case of absence of a dedicated CDP.
Hope this clears the mtter
Sent from my HTC One X using Tapatalk 2
If you are taking analogue out directly from your disk player then the conversion is done by built in DAC inside the player. Other than dedicated CD players, not many BDPs or DVDPs do this job well.
If you are using a dedicated DAC, than you are simply transporting digital data from your player to your DAC through HDMI or optical or co-axial out and leaving the co version job to DAC which is a prefered option in case of absence of a dedicated CDP.
Hope this clears the mtter
Sent from my HTC One X using Tapatalk 2
Transports made a BIG difference as many of the issues with digital audio arise at this point. This has been pointed out by other experienced FMs too.
Yesterday we listened to a system through my Oppo-93 as it was the only portable CD player available to take to another FMs house and I must say I was pleasantly surprised at how good a stand-alone player it is.
tirthankar
Active Member
What are your amp, dac and speakers? They will determine whether it is worth for you to spend on a good transport or not.
And for people claiming that transport does not make a difference, I would like to know how many of them have compared a run of the mill transport with a quality one using a similarly high quality analog chain.
And for people claiming that transport does not make a difference, I would like to know how many of them have compared a run of the mill transport with a quality one using a similarly high quality analog chain.
Psychology acts both ways. What makes someone so sure that if they believe there isn't a difference, they will still hear it?
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vikoma
Member
And how does a computer fare as a transport (USB input) compared to professional CD player, and a retail CD player?
The key ideas I understood was that the 1's and 0's produced by CD player output are to be interpreted by DAC's Analog to Digital converter, with help of its clock signal. The clocks of CD player, and clock of the DAC are not in sync with each other, and they may keep re-syncing often. With oversampling, this error would be much less.
What type of unwanted artifacts are introduced in the sound, I have not been able to appreciate...
The key ideas I understood was that the 1's and 0's produced by CD player output are to be interpreted by DAC's Analog to Digital converter, with help of its clock signal. The clocks of CD player, and clock of the DAC are not in sync with each other, and they may keep re-syncing often. With oversampling, this error would be much less.
What type of unwanted artifacts are introduced in the sound, I have not been able to appreciate...
vikoma
Member
When you use a device like blue ray player to only get audio digital data (and not the analog output signal, which can directly be fed to amplifier), then it is referred to as transport. You connect a DAC to transport as next step.
I did an A/B long back - of the Oppo 83 and the cd6002 and concluded that the digital smps in Oppo messes the SQ a bit as compared to the Marantz. But I think with a better psu, the Oppo should do fine as a budget transport.
--G0bble
Well, our views come with our own listening + Understanding how things work. I have compared Panasonic bdp-210, Pioneer DV79 and Marantz DV8400 in my setup. I don't understand why people have to bring in their setup into the arguments for these kind of things. I guess it helps bragging and the transport is actually a point to brag about. I won't say whether my analog chain is high quality (I leave that to others), but its quite decent comprising of Studio Monitors and Adcom Amp along with proper room treatments.
Which one make sense? Its just the digital data and getting transferred through a cable. People are trying to find differences when there is actually none.
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koushik
Well-Known Member
Well, it is lot more than that even before it is getting transferred through cable. The bits extracted from the CD by the CD transport are not error free by any means. Bits do get lost everywhere while reading, in the signal path etc.
We hear differences only if our systems allow us to hear. Unlike hi-end cables, interconnects, for a CD transport I think a decent system can show the difference easily.
Kaushik,
All the error correction for data reading happens in the drive, none of it happens outside of it. Moreover, the Audio CD's do not have any separate error correction data like a normal Data CD. Audio CD's use full 2352 bytes per block (data cd uses 2048 bytes per block) and it has good amount of redundant data to interpolate erroneous data. The error correction systems are quite elaborate. Cyclic Redundancy correction used in CD's achieve correction rates above 99.9985%.
It used to be a very big deal for error correction and accurate reading 30 years back. Not so much in last decade or so. Drives are fast, more accurate, and better algorithms have made reading the data more easy. Moreover, The Accurate Stream technology implemented in modern drives makes errors a thing of past. Almost all the drives manufactured in last 5 years at least have the Accurate stream. Even PC data drives have it.
None of the player manufactures make their own drives. They just pickup the standard drives from OEM's. Most likely, the drive used in a high end player is same as the one sold in Walmart for $40. It's a moot point to talk about a particular player has better correction compared to others.
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