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oliverstoned View Drop Down
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Direct Link To This Post Topic: Big digital
    Posted: August 29 2005 at 08:34
Just a little Hifi thread, cause there are only instruments ones, and it miss!

So, i would present the new cd playing system i just bought myself on occasion not long ago.
I'm very happy with it!

Here it is:

Drive Sonic Frontiers SFT-1 (the biggest of the brand-it's the device on the top of the shelf):



Goldmund Mimesis 14 converter:



Nordost digital cable

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oliverstoned View Drop Down
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Direct Link To This Post Posted: August 29 2005 at 08:37
These devices are about ten years old, that's why i get them not too expensive, and new, the whole costed about 6000€.
I payed it 2000€, and it smokes all SACD and DVD players, as it's much more musical!
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Direct Link To This Post Posted: August 29 2005 at 09:03
It's a american/swiss combination.

Goldmund is Swiss.

And it destroys little integrated cd players, in term of dynamic, image, high, low, details, transparency,precense, everything!
It sounds much more analog, even if it's still far from a very good turntable.
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Direct Link To This Post Posted: September 01 2005 at 08:03
any question?
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MikeEnRegalia View Drop Down
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Direct Link To This Post Posted: September 01 2005 at 08:09

I listen to prog primarily on my computer. I ripped all the CDs to mp3 - VBR 64-192kbps (avg. 160kbps). I'm currently re-ripping some of my favorites in WMA Lossless, as it really sounds much better.

I have a good sound card (Audigy 2), and it's connected to a Harman Kardon HiFi amplifier. I'm thinking about buying a Logitech THX sound system though, so that I can enjoy my 5.1 DVDs properly ...

I don't know what to think about your system ... generally, I think it makes sense to use an analog amp, Class A if possible. But I won't invest thousands of dollars/euros to improve the sound just a little bit. It also depends on your place ... if you have your own house, you may be able to listen to music at the necessary volume to appreciate the dynamics of a really good amplifier, but in my flat I have to be careful not to annoy the neighbors too much.

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Direct Link To This Post Posted: September 01 2005 at 08:46

Originally posted by oliverstoned oliverstoned wrote:

It's a american/swiss combination.

Goldmund is Swiss.

And it destroys little integrated cd players, in term of dynamic, image, high, low, details, transparency,precense, everything!
It sounds much more analog, even if it's still far from a very good turntable.

I'm curious ... what does this thing do which "normal" CD players don't? I'm an engineer and know a little bit aboutanalog and digital audio. Apart from the D/A converter, I fail to see what a CD player could do to enhance the audio quality ...

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Direct Link To This Post Posted: September 01 2005 at 09:10
First, a good drive with a serious mechanic is needed to extract all the info contained in the CD. Second, a good converter makes a HUGE difference! The conversion circuits need to be good, and the output analog stage after needs also to be good also not to ruin the result, just before it goes to the preamp.

The difference with a little integrated player is HUGE, on a good transparent system with tubes amps in the highs, and everything (see others hifi threads for details):

-Huge improvment in term of dynamic (sometimes it's like the music is played two times faster!!!!)
-Huge improvment in term of image (soundstage), precense.
-Huge improvment in term of transparency, details (it goes with the dynamic: i re discover all my records, i hear instruments i've never heard on albums i've played hundreds of times!!!!).
-Highs are MUCH more softer and detailed, (when you put a good converter, it becomes much more softer), it's much more analog. You can listren hours without being tired. Very hard in numeric technology!
-Lows are much more tighter, faster, it doesn't "dribbles", like with a little player.

the only pb is that it reveals the bad recordings!
And you realize that classical and jazz records are much more better than rock ones!
Fortunatly there are good rock ones...
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Direct Link To This Post Posted: September 01 2005 at 09:21
About cd transport, i let you imagine the difference between these two kinds of mechanic:



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Direct Link To This Post Posted: September 01 2005 at 09:27

I agree about the D/A converters ... they can make a huge difference.

But the CD transport doesn't have anything to do with the quality of the extracted information. Sorry to break this to you, but the CD drive (ALL drives) are able to perform data validation and error correction. When I run CDex in panic mode and it rips the tracks and says "ok", I can be absolutely certain that EVERY bit was extracted properly.

The D/A converters on PC soundcards are not good ... but that problem can be easily solved by using digital interfaces to get the music to the amp ... and this would be what I'd do to improve my sound. Get a Class A amp that has a digital input.

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Direct Link To This Post Posted: September 01 2005 at 09:45
…Still about mechanic issue, be aware that CD turns at very high speed, compared to vynil, and it creates vibration problems. The Teac VRDS mechanic (Vibration Rigid Disc System ) that you see up, traps the CD , like in a iron hand, cancelling all vibrations.
And of course, you hear the result, in terms of dynamic, details, image, precense, loss of harshness, etc…
That’s why they use this kind of equipment in studio (Tascam CD player, which is the professional division of Teac).
But in the audiophile world, there are products even better than in studio (Mark Levinson Cd , for example, or Teac “Esoteric” products line) and the result is amazing, even if it’s less good than high ends turntables.
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Direct Link To This Post Posted: September 01 2005 at 09:51

I know that there are very expensive CD players ... but there really is no difference between the data ripped by ANY CD player using error correction and the data read by a high end CD player.

But listening to music using cheap equipment and/or computers does have the problem of the noice created by the devices.

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Direct Link To This Post Posted: September 01 2005 at 09:55
"to perform data validation and error correction"

Do you know what is data correction?
It makes work correction circuits whih recreates an approximative signal, (simplified) and you loose half of the info. It's like the difference beween an original Cd and an MP3. On a transparent system, the difference is HUGE. You don't have to listen 10 seconds to understand.
You would agree if you could listen on my system.
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Direct Link To This Post Posted: September 01 2005 at 09:58
I know it's hard to believe in theory, but the result is here!! obvious when you listen an average drive to a great one. (and this is not only a price issue)
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Direct Link To This Post Posted: September 01 2005 at 10:00

Originally posted by oliverstoned oliverstoned wrote:

"to perform data validation and error correction"

Do you know what is data correction?
It makes work correction circuits whih recreates an approximative signal, (simplified) and you loose half of the info. It's like the difference beween an original Cd and an MP3. On a transparent system, the difference is HUGE. You don't have to listen 10 seconds to understand.
You would agree if you could listen on my system.

Whayou describe is called "data interpolation". What I mean is checking the CRC entries and re-reading parts that could not be validated.

Trust me, it's not possible to read digital data better or worse ... there's only right or wrong. On any CD-ROM it's possible to extract the data completely, without ANYTHING missing. Mind you, I'm talking about extracting the data, not merely PLAYING audio CDs.

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Direct Link To This Post Posted: September 01 2005 at 10:06
TEAC Vibration-free Rigid Disc-clamping System (VRDS)

It is a fact of life that mass-manufactured discs are not perfectly flat and yet a perfectly flat disc is the ideal for the perfect reproduction. TEAC chose to move away from increasingly complicated electronic cures and address the problem at its mechanical source. The result is TEAC VRDS . The whole disc is clamped tightly against a solid precision-machined turntable to establish a flat surface. In addition, the use of ultra-dense materials damps vibration and resonance. Tight and deliberate control of every movement within the mechanism is the key to accurate and precise reproduction of music from the disc. Presented with a flat disc surface, cocooned from the outside world, the laser beam tracks the disc with unerring accuracy - thus it can trasmit the purest bit stream to the machine’s fascinating of esoteric electronic systems.


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Direct Link To This Post Posted: September 01 2005 at 10:07

Originally posted by oliverstoned oliverstoned wrote:

I know it's hard to believe in theory, but the result is here!! obvious when you listen an average drive to a great one. (and this is not only a price issue)

I'm sorry ... I don't doubt that your drive sounds much better, but what I said about data extraction is true. It's a proven fact. If your amp has a digital input, I could connect my sound card to your computer and it would sound EXACTLY the same as through your CD player - provided that the D/A converter of your amp is as good as that of the CD player.

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Direct Link To This Post Posted: September 01 2005 at 10:11

Originally posted by oliverstoned oliverstoned wrote:

TEAC Vibration-free Rigid Disc-clamping System (VRDS)

It is a fact of life that mass-manufactured discs are not perfectly flat and yet a perfectly flat disc is the ideal for the perfect reproduction. TEAC chose to move away from increasingly complicated electronic cures and address the problem at its mechanical source. The result is TEAC VRDS . The whole disc is clamped tightly against a solid precision-machined turntable to establish a flat surface. In addition, the use of ultra-dense materials damps vibration and resonance. Tight and deliberate control of every movement within the mechanism is the key to accurate and precise reproduction of music from the disc. Presented with a flat disc surface, cocooned from the outside world, the laser beam tracks the disc with unerring accuracy - thus it can trasmit the purest bit stream to the machine’s fascinating of esoteric electronic systems.


That's what it is - esoteric. The text is obviously optimized to convince vinyl users ... it is just a good piece of technology, that's for sure. But the laser of a CD drive is not compareable to the needle of a record player - the bits are either read or not, there's no further difference.

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Direct Link To This Post Posted: September 01 2005 at 10:21
Originally posted by MikeEnRegalia MikeEnRegalia wrote:

Originally posted by oliverstoned oliverstoned wrote:

"to perform data validation and error correction" Do you know what is data correction? It makes work correction circuits whih recreates an approximative signal, (simplified) and you loose half of the info. It's like the difference beween an original Cd and an MP3. On a transparent system, the difference is HUGE. You don't have to listen 10 seconds to understand. You would agree if you could listen on my system.


Whayou describe is called "data interpolation". What I mean is checking the CRC entries and re-reading parts that could not be validated.


Trust me, it's not possible to read digital data better or worse ... there's only right or wrong. On any CD-ROM it's possible to extract the data completely, without ANYTHING missing. Mind you, I'm talking about extracting the data, not merely PLAYING audio CDs.



I know what you mean, and thats an interesting issue.
I'm not good enough to tell you, anyway i'll get more infos on this issue.
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Direct Link To This Post Posted: September 01 2005 at 10:24
But, what is sure, is that vibes affects DRIVE, cause when i put a carbon/kevlar plate with teflon/metal vibes cancellers below, it's NIGHT and DAY. So vibes affect cd reading somehow! it's the principle of the VRDS system!
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Direct Link To This Post Posted: September 01 2005 at 10:26
Originally posted by MikeEnRegalia MikeEnRegalia wrote:

Originally posted by oliverstoned oliverstoned wrote:

TEAC Vibration-free Rigid Disc-clamping System (VRDS) It is a fact of life that mass-manufactured discs are not perfectly flat and yet a perfectly flat disc is the ideal for the perfect reproduction. TEAC chose to move away from increasingly complicated electronic cures and address the problem at its mechanical source. The result is TEAC VRDS . The whole disc is clamped tightly against a solid precision-machined turntable to establish a flat surface. In addition, the use of ultra-dense materials damps vibration and resonance. Tight and deliberate control of every movement within the mechanism is the key to accurate and precise reproduction of music from the disc. Presented with a flat disc surface, cocooned from the outside world, the laser beam tracks the disc with unerring accuracy - thus it can trasmit the purest bit stream to the machine’s fascinating of esoteric electronic systems.


That's what it is - esoteric. The text is obviously optimized to convince vinyl users ... it is just a good piece of technology, that's for sure. But the laser of a CD drive is not compareable to the needle of a record player - the bits are either read or not, there's no further difference.



It works, i swear, and it's not a placebo!
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