John Curl's Blowtorch preamplifier part II

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I don't know the answers as to why digital sound often comes off poorly, in the sense of saying "Aha, I can hear that the thingymabob isn't screwed tightly enough into the whatchamacallit!!". But what is very obvious is that the SQ of digital reproduction is quite fragile - a small amount of "wrongness" goes a long, long way, in its impact on the perceived quality - can cause playback to degrade to a remarkable degree, for no clear, easily recognised reason.

I've found that the best approach is to always be aware of this aspect of digital playback problems, and be prepared to strongly push forward even when the sound is dire - if experiments are done, then the chances are improved for locating the errant gremlin - and good sound will suddenly snap into focus. The quality can go from obnoxious, to brilliant with precisely the right "adjustment" having been made - this is extremely frustrating behaviour to deal with at times, but knowing that it's just the way the beast is, does help with the annoyance at it being like that, :).
 
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I saw no need for dither on 24b as I showed at -90. This morning, in an email, I asked Bob Speer of CD Mastering Services "--- dither is used only when reducing the word length. .... for 24/96 HD dither is not used" for clients such as HDTracks and others for hiRes downloads.

I can quote numerous other mastering engineers who will say the opposite.
Read a couple of posts by Bob Katz here, for example:
When reducing bitdepth from 64-bit to 24-bit in ASIO, does JRiver....
I hope he doesn't need an introduction ;)

Also, take a look at this excerpt from Waves L2 hardware box manual. IDR is their dithering/noise shaping algorithm.
 

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I don't know why anyone would want to use a physical CD and player except for transferring the data over to a more convenient medium.
1. Ease of use
2. Manufactured CD as archival medium will outlive any other digital storage medium, be it flash card, SSD or rotating one. Back-ups? No, thanks.
3. I don't want to see that 'stinkin' radiating gigahertz device (PC) anywhere near my analog system.
4. I don't want radiating SMPS anywhere near the sensitive analog path.
5. I don't want to deal with external DAC with its PLL/VCO jitter problems.

Is that enough? ;)
 
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I don't know why anyone would want to use a physical CD and player except for transferring the data over to a more convenient medium. So it would be nice to see the term "16/44.1" used instead of "CD" because no one's talking about physical CDs, but rather 16/44.1 PCM.

The constant and intentional use of the term "CD" seems to be nothing more than a propaganda device.

se

Well my car will play cassettes as well as CDs, but really prefer the discs. And I like having shelves of music. That marks my demographic I realise! Oh and that I don't change cars very often.
 
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I don't know why anyone would want to use a physical CD and player except for transferring the data over to a more convenient medium. So it would be nice to see the term "16/44.1" used instead of "CD" because no one's talking about physical CDs, but rather 16/44.1 PCM.

The constant and intentional use of the term "CD" seems to be nothing more than a propaganda device.

se

I use the term CD because that is what I am playing..... CD's. I am talking about CD (16/44.1) being played vs 24/96 files being played. I've said this numerous times.

THx-RNMarsh
 
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Maybe the analog stages are better in the 24 bit products. The analog stage and the digital filter always seemed to have more sonic significance than the number of bits when I was working on this kind of product.

Just double checked -- I use the CD player's fiber optic output to the BenchMark 2 input.

??

THx-RNMarsh
 
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We intermix CD's with any other 16bit, 44.1KHz approach, because that is WHY this standard exists. We would have chosen 50KHz minimum, if we had a choice. CD's, with their 16K, 44.1KHz are implied to be equal to any other medium at the same rate. To deny this is absurd.

What's absurd is to refer to a particular bit depth and sampling rate as a MEDIUM. Compact Disc is a MEDIUM. Compact Disc is inherently 16/44.1, but 16/44.1 is not inherently Compact Disc. You can store a 16/44.1 file on whatever medium you choose.

se
 
I come from the aerospace mentality of getting at least 15 years out a car. Mine is only 13 years old so a bit of life left in it yet :)

I had the unfortunate experience of my BMW on board computer system s**ting the bed. Everyone involved was clueless so I went all the way to the other side and bought a Kia Soul. To be fair I have said before wanking over cars is about as interesting to me as watching paint dry.
 
I use the term CD because that is what I am playing..... CD's. I am talking about CD (16/44.1) being played vs 24/96 files being played. I've said this numerous times.

Then how can you possibly go on about 16/44.1 being inadequate compared to 24/96 when you're not even playing 16/44.1 files that are stored on the same medium and played back through the same system as your 24/96 files, but instead are spinning up physical CDs on a $300 CD player?

se
 
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my dream is to have a clockwork lotus 7 clone again. But that won't happen for a while. My passat is the last before they went overly electronic so what wiring gremlins its had I can diagnose and fix, mainly from known design faults causing leaks. As such when it does die not sure what I would replace it with that would give such sterling service.

But I do like to drive and so hate most things produced since 1985 as they drive for you.
 
Then how can you possibly go on about 16/44.1 being inadequate compared to 24/96 when you're not even playing 16/44.1 files that are stored on the same medium and played back through the same system as your 24/96 files, but instead are spinning up physical CDs on a $300 CD player?

se
And indeed that is relevant ... at the Sydney audio show a good sounding system fell off its perch, sound quality wise, when the Oppo player was used to feed the DAC rather than the laptop - the electronics of the CD transport were doing just enough to add a bit of poo into the picture ...
 
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