Thanks qusp - guess I am just unlucky, or maybe I jiggled it too often - in any case, still happy with the amp, esp now that I have Topkitted it.
At this stage, I am very close to ordering the P4 simply to experience the phenomenal iBasso turnaround time ! Seriously, I have been waiting for 3 pairs of headphones for well over a week now - all Aussie etailers and one less than 400km from the town I live in. The Topkit took 13 days to get here from Florida, which I can live with, but the time it takes to put something in a truck (our town is on the major trucking route between Brissie and Melbourne, for $^#@^& sake ...) is really annoying, recent events in QLD notwithstanding. Australia Post are particularly woeful.