Note the character - it makes no difference (8)
I believe the answer is:
equality
'no difference' is the definition.
(thesaurus)
'note the character it' is the wordplay.
I cannot quite see how this works, but
'note' could be 'e' (musical note) and 'e' is present in the answer.
'character' could be 'quality' (synonyms) and 'quality' is present in the answer.
No letters remain.
This may be the basis of clue (or it may be nonsense).
'makes' is the link.
Can you help me to learn more?
(Other definitions for equality that I've seen before include "level playing field" , "No favouritism being shown" , "State of parity of status etc." , "treating the duke and the dustman alike?" , "No discrimination" .)