[Godolphin&fellow]

Hi, I recently got a rather budget priced DVD recorder, (Magnavox
msr90d6). All the manual says is that the audio records at 48kHZ and
the 'compression format' is Dolby Digital. The 'compression' part
doesn't sound too promising but... will this record the audio portion
at CD quality level, or something significantly below? Also, does the
highest speed, at 1 hour per DVD, record the audio track better than
any of the slower speeds, or would 2 hours per DVD record as well?
Thanks for any advice you may give.