Insignificant volume? Turn the fourth of controls to eleven (9)
I believe the answer is:
novelette
'insignificant volume?' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Maybe you can see an association between them that I can't see?
'turn the fourth of controls to eleven' is the wordplay.
'turn' indicates an anagram.
'the fourth of controls' becomes 't' (4th letter of 'controls').
't'+'to'+'eleven'='ttoeleven'
'ttoeleven' is an anagram of 'NOVELETTE'.
Can you help me to learn more?
(Other definitions for novelette that I've seen before include "Short story" , "romance?" , "Short work of fiction" , "Short book of fiction" , "Short and light tale" .)