John: The computer revolution has been spawned by discoveries about electron signal flow in conductors & semiconductors. The "doubling of speed" every few months is because we find new/faster/smaller ways to apply the discoveries.
So we know a LOT about electron flow through a conductor. This...
In general, electronics dont need break in time.
You did hear a difference, which is good. (Although even experienced reviewers have been fooled into saying one amp is better than another because of a small amount of volume difference).
I suspect your speakers may be the weak point.
While...