"Jeff Findley" wrote in message
...
A guy I work with used to work at a CD plant and from what he understands
from working there, the type of media used to deliver the master to the CD
plant could make some difference. If the media was digital, then the CD's
pressed would be exact digital copies, but if the media was analog, that
meant that what the plant got was going to be an "AAD" CD with the
additional possibility that the CD plant's analog to digital conversion
might not be as good as what could be done by a recording/mixing studio.

In fact many CD plants would not touch an analog tape these days. Any who do
would probably perform as good a job as the tape allows for. The only
difference being the quality of the tape machine.


Once the CD's were cut, they'd sample a few and play them in both a "low
end" and a "high end" CD player. The high end CD player would actually
report error detection/correction information and a certain amount of
errors
were allowed in the final product, but I think they only allowed errors
which were able to be corrected by the CD player.

Unfortunately they even ADD C1 errors these days and call it copy
protection!

MrT.