I've asked this before without a response; perhaps someone has come up with
an answer since then, or someone new on the list knows.

When I record a CD track to MD in mono mode by digital transfer, the levels
drop noticeably from those on the CD itself (despite a 0.0 gain setting on
the recorder) and from those on the MD recorder's VU meter.  I've noticed
this on several models of Sony MD decks.

Now, if the input were stereophonic I could understand it: the peaks in one
channel might come at the same times as softer amplitudes in the other, and
the mono recording on the MD would have to average them out, so the MD copy
might well peak lower than the CD source did.  But it happens even when the
CD source is monaural.  Recently, for example, a mono CD track that peaked at
0.0 dB (in both channels at the same time, as the track was truly monaural),
copied to MD digitally at 0.0 dB gain, produced a mono MD copy that peaked
around -1.2 dB.  The same CD track, recorded from the same CD player over the
same optical cable to the same MD recorder in stereo mode, yielded a stereo
copy that peaked at 0.0 dB (but of course it took up twice the space).

If I turn the gain up a little, the VU meter goes nuts into the red, yet on
playback the resultant mono copy won't come near 0.0 dB, much less clip. 
Apparently the attenuation is occurring somewhere in the MD recorder after
the signal passes the VU meter display.

Does anyone know what is going on here and how to get proper levels on mono
recordings (short of waiting for the MDS-JB940 to come out and post-process-
ing the track with Scale Factor Edit, assuming Scale Factor Edit works on
mono data)?

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