Note haircut with perfect means of increasing volume (10)
I believe the answer is:
microphone
'means of increasing volume' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'note haircut with perfect' is the wordplay.
'note' becomes 'mi' (as in do-re-mi).
'haircut' becomes 'crop' (I've seen this before).
'with perfect' becomes 'hone' (synonyms. I am not sure about the 'with' bit.).
'mi'+'crop'+'hone'='MICROPHONE'
Can you help me to learn more?
(Other definitions for microphone that I've seen before include "Device to pick up and transmit sounds" , "Sound receiver" .)