Rock's more daring for the audience (7)
I believe the answer is:
boulder
'rock's' is the definition.
(boulder is a kind of rock)
'more daring for the audience' is the wordplay.
'more daring' becomes 'bolder' (bold can mean daring or brave).
'for the audience' indicates a 'sounds like' (homophone) clue (how an audience might hear it).
'bolder' is a homophone of 'BOULDER'.
(Other definitions for boulder that I've seen before include "Large stone" , "Big rock" , "Large smooth rounded rock" , "Colorado city" , "US city" .)