I go far, in potential, as a barber (6)
I believe the answer is:
figaro
'a barber' is the definition.
(main character in The Barber of Seville)
'i go far in potential' is the wordplay.
'i go far' anagrams to 'FIGARO'.
However, I am not clear how this is indicated.
'as' is the link.
Can you help me to learn more?
(Other definitions for figaro that I've seen before include "Motzart opera ''The Marriage of . . . . . . ''" , "Mozart tells of his operatic marriage" , "The Barber of Seville" , "devoured in Paris" , "Le -, French paper" .)