Smargo, I am glad you like the Vision DAC so far. However, don't move the jumper to the high bit rate position unless you have some true high bit rate material to play back. In the high bit rate mode, it will not play standard (up to 96K) bit rate material. The jumper is for those experimenting with rare source material right now, not for any standard available music.
It really should require no break in time at all.
Best regards,
Frank