Bail due to be fixed in hearing (7)
I believe the answer is:
audible
'in hearing' is the definition.
(capable of being heard)
'bail due to be fixed' is the wordplay.
'to be fixed' indicates anagramming the letters.
'bail'+'due'='baildue'
'baildue' with letters rearranged gives 'AUDIBLE'.
(Other definitions for audible that I've seen before include "Distinct" , "Loud enough to be heard" , "Capable of being heard" , "Easily caught" , "Within earshot" .)