Half the information on CDs is analogue


I would like to argue that one of the reasons that some transports sound significantly better than others is because much of the information on a given CD is actually analogue (analog) information.
An excellent transport does not just read digital information: 1s and 0s (offs and ons); it must be sensitive enough to pick up the other information that has been stored as a physical property of the CD medium. This 'physical' information, like the tiny bumps in the groove of a vinyl record, is analogue information.

Before I say more I'd like to hear what others think.
exlibris
Sean...Did it ever occur to you that the "TONS of equalization" that you say is applied to digital recordings may actually be the removal of equalization that was applied to make vinyl sound good? There are several digital recording labels that claim to use no electronic equalization or other processing at all.
I'm comparing apples to apples here. In the tests that i performed, i used live analogue recordings that i had made. These recordings had no form of compression, equalization, etc.. performed on them. I then converted them over to CD via an audio based digital recorder that i have. The end results were that the digital "clones" weren't clones of the original analogue signal at all, but bad recordings that barely resembled the originals in terms of tonal balance.

Using this same digital recorder, i've made very good "dubs" of other digital recordings. As such, the losses incurred going from analogue to digital are FAR more severe than when working strictly within the digital domain. This is probably why so many of the early "AAD" discs sounded SOOO bad. That is, they were recorded and mastered in analogue form, but sold as recordings in digital form.

Given that i've had similar results using other digital based recording devices that i have access to, i know these results to be both consistent and repeatable. This is why i said what i did above i.e. others can find out for themselves by performing just such a test. Sean
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Sean, please name your digital recorder. The implications of your comments is that A/D conversions cannot capture any analog signal, whether a line feed from a microphone or the output of a tape deck. Even professionals who prefer analog recordings have admitted that high resolution digital is more faithful to the original sound.
Sean,

Take an analogue source, record it onto a CD and then compare the original analogue source to the digital "cloned" recording using the same playback equipment. If you can't hear the difference between the original and the "digital clone", you better check into the office of an audiologist for a very thorough exam. You are either going deaf and / or are thoroughly lacking in listening skills.

By your definition I am deaf and thoroughly lacking in listening skills. I admit that I often can't tell whether my AKM ADC & DAC converters are in the signal path or not. What equipment are you using that you hear such a huge difference....a PC sound card?
Shadorne,

Currently, I do not find differences in DACs to be subtle. I find many DACs to be un-listenable and others to be quite good. Some DACs sound 'confused' while other sound 'right.' When it comes to transports, some sound threadbare and anemic while others are full-bodied and create an excellent sense of space. I have also experienced significant differences between digital cables (see my review of the Stealth Varidig Sextet, for example).

When I first started building a high-end system, however, the difference between various digital front ends was indeed subtle.