A posh doctor orbits moon and earth, a recording enthusiast (10)

'a recording enthusiast' is the definition.

'a posh doctor orbits moon and earth' is the wordplay.
I cannot really see how this works, but
'a' is found in the answer.
'posh' could be 'u' (abbreviation for upper-class - opposite to non-u) and 'u' is located in the answer.
'moon' could be 'io' (moon of Jupiter) and 'io' is located in the answer.
'doctor' could be 'dphil' (Doctor of Philosophy) and 'dphil' is found in the leftover letters.
'earth' could be 'e' and 'e' is found in the answer.
No letters remain.
This explanation may well be incorrect...