His reproductions are impressive (7)
I believe the answer is:
printer
'his reproductions are impressive' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
This is all the clue.
Can you help me to learn more?
(Other definitions for printer that I've seen before include "who makes an impression" , "See 13 Down" , "eg Typesetter" , "Producer of reading material" , "one making an impression?" .)