Azurys

Ja datenübertragung ist ja auch nicht das problem aber die verbauten DAC's sind halt schrott und man hört es halt immer ob ein kopfhörer per bluetooth oder kabel verbunden ist, ob AAC oder LDAC ist dabei wurscht. Bestes Beispiel sind die teureren Focal Bathys im vergleich zu den Azurys. Und ANC ist

If his office isn't shared with others, I'd grab a Focal Clear + Fiio K11 (non r2r). Very dynamic headphone with good midrange and microdetails, subbbass is quite punchy too. However it is open back so it will have a bit of sound leakage. Another option would be the Hifiman XS, which is going to be

To me the isolation isn’t quite as good as an HD620S or 99 Classic 2, but it’s notably better than a Focal Azurys. If you can enjoy your 560S in there, the 480 will be fine.

I really think that Focal messed up with the pad material of the Azurys. I sold mine ultimately because it was too soft and pillowy despite it’s graph.I think that Hybrid pads would both isolate better and make the bass snappier and more tidy, with better top end clarity.