I bought my JDS Labs Atom one year ago. I use it every day. I'm in UK. I didn't break the PSU yet. I connected the amp with the power supply one year ago and have not touched the PSU since. I think this is a great technique!
However after 6 months the volume knob did fall off into my hand! It's OK, I pushed it back onto the spindle and it has sat there being twiddle this way & that for another 6 months and all is well. I would prefer if it hadn't come off but I don't really care. My previous headphone amp was an S.M.S.L sAp II. Very substantial metal case and metal volume knob, massive power, nothing fell off. But the Atom is *much* nicer with IEMs and really sounds great so I can happily overlook a minor, temporary, easily fixed issue.