Alan Moss replied to me:

>>Good engineers are thin on the ground.
>
>I'll have to take his word for that.  I've been in on recordings for EMI,
>DG, Sony Classical, Chandos, Erato, Hyperion and other labels, and the
>engineers always seem to know the score very well and to know what they are
>doing.  Where there is significant variation, I think, is in their degree
>of rapport with the conductor.....

I am simply going on what I hear when listening.  In effect CDs with
excellent sound quality are thin on the ground.  I am making the assumption
that usually low quality is the engineer's fault.

Bob Draper