Faking it, a duo copy recording (9)
I believe the answer is:
audiotape
'recording' is the definition.
(audiotape is a kind of recording)
'faking it a duo copy' is the wordplay.
'faking' is an anagram indicator.
'copy' becomes 'ape' (ape can mean to copy or imitate).
'it'+'a'+'duo'='itaduo'
'itaduo' anagrammed gives 'audiot'.
'audiot'+'ape'='AUDIOTAPE'
(Other definitions for audiotape that I've seen before include "recording" , "record" .)