Due to the AQ Sky having the DBS battery pack on them they are already "broken in". I have AQ Sky throughout my system and did not notice any significant "change" as they aged or settled into the system. I found them to be very neutral and enjoyably detailed yet musical in my system. Upon a telephonic conversation with Alasdair of Audioquest (Canada - head office) he advised that upgrading the DBS pack to 72v would be the "final" upgrade on this interconnect as it will provide a quieter background and provide a slight improvement to the Sky's existing splendid character.