Hello :-)
Before the CD5 I had the CD1 (great unit also), both took something like 150-200 hours to open really. Maybe they go on improving after this time but I found that most of the improvements are achieved after 200 hours. The CD5 has Mundorf Supreme Silver oil which are said to need around 200 hours to break in.
300 to 600 hours seems quite a lot, typically the break-in time for some exotic caps but not the Mundorf Supreme.
I guess it depends how fast the capacitors charges and discharges and the number of cycles, according to the kind of music you play.
Before the CD5 I had the CD1 (great unit also), both took something like 150-200 hours to open really. Maybe they go on improving after this time but I found that most of the improvements are achieved after 200 hours. The CD5 has Mundorf Supreme Silver oil which are said to need around 200 hours to break in.
300 to 600 hours seems quite a lot, typically the break-in time for some exotic caps but not the Mundorf Supreme.
I guess it depends how fast the capacitors charges and discharges and the number of cycles, according to the kind of music you play.