No piece of equipment is at its best until it has been properly burned-in. Until that moment it will only deliver a fraction of its musicality; and its inherent qualities such as its bandwidth and timbres will evolve, sometimes considerably during that period.
Here is a list of the burn-in required periods, in hours, based on the combined experience of us and our customers.
Column A represents the minimum period required before starting any kind of serious listening sessions. The longer period stated in Column B, represents the period during which clearly audible improvements have been noticed.
A multitude of burn-in CDs are available. For example, we like track 9 of the XLO Test/Burn-In CD RZ-1000 which boosts the first burn-in period.