Electronic expertise behind Spielberg film's audio equipment (3,7)
I believe the answer is:
ear trumpet
'audio equipment' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'electronic expertise behind spielberg film's' is the wordplay.
'electronic' becomes 'e' (as in e-mail or e-books).
'expertise' becomes 'art' (I've seen this before).
'behind' becomes 'rump' (informal term for the buttocks).
'spielberg film' becomes 'et' (I can't justify this - if you can you should give a lot more credence to this answer).
'e'+'art'+'rump'+'et'='EAR-TRUMPET'
Can you help me to learn more?
(Other definitions for ear trumpet that I've seen before include "Old hearing aid" , "Primitive hearing aid" , "eight [HEARING AID]" , "Former hearing aid" , "sound engineering device" .)