"Don Pearce" wrote in message
...
But it is different for every disc - the point with CD is that you can
set it once and forget it.

Since the cartridge you use has it's trackability limits, and the cutter
lathes also have their limits, there is still a finite limit to what you
will ever get from a vinyl disk. This can be ascertained.
OTOH, CD's have differing average levels, so you cannot "set and forget",
only ascertain the peak level setting for clipping for Dfs.
Admittedly the peak levels on all modern CD's come close to this, whereas
the peak levels for individual vinyl disks cover a wide range.
Knowing the maximum gain setting in both cases allows you to set a volume
control level below the maximum required for amplifier induced clipping
however.

MrT.