Our manual says that headsets in the list are definitely compliant but if we use a headset not in the list then we must ensure it is compliant with FAA TSO C139 or the EASA equivalent. We also have a deal with Bose for discounted headsets (A20 or proflight) organised by the company which is the 2nd biggest A320 operator in the world.
Maybe see if you can get your flight ops dept to check with airbus? I honestly think they would be told to use whichever headset they wanted.