Well, if there is a online shop for headphones, this domain can well serve them.
We can also have the same keyword with .space, .place, link., .online, .vip, .site, .website
nice brandable headphones.city available at Unireg for USD 4
another nice alternative headphones.place also for USD 4
while other extensions which make sense like .shop or .store or .online all with premium renewals
Because of available alternatives, I would say mix XXX-high XXX for right end user, as these alternatives are slightly worse imo then .center. You should do outbound emails to end users, as in 2017 passive sales (..I list it at Sedo and Flippa) still are not enough for new gTLDs.