Seazer
100+ Head-Fier
Would something like this work or should I be wary because it doesn't specifically mention balanced?I'm not aware of any variations in the TRRS signal arrangement in 2.5mm outputs. It is just as standardized as 4.4mm Pentacon or 4-pin XLR. 3.5mm balanced outputs on the other hand don't have a consolidated standard that I am aware of. (Headphones that use single 2.5mm or 3.5mm jacks on the cups for their cable are not standardized on their pin input, and it is not uncommon for them to choose whatever suits the maker, including backward compatibility with non-TRRS, i.e. standard unbalanced TRS cables, such that a headphone with a 2.5mm TRRS jack on a cup would not necessarily work with a straight through 2.5mm TRRS to 2.5mm TRRS cable without re-arrangement of the signals from end to end.)
You can buy the Dunu DC-11 adapter or the Fiio BL35 to plug a headphone terminated in a 2.5mm balanced male connector into a 3.5mm unbalanced socket.
https://s.click.aliexpress.com/e/nGcLb3uk