If I'm paler, arrange for a booster (9)
I believe the answer is:
amplifier
'a booster' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps you can see an association between them that I can't see?
'if i'm paler arrange' is the wordplay.
'arrange' indicates an anagram.
'if'+'im'+'paler'='ifimpaler'
'ifimpaler' with letters rearranged gives 'AMPLIFIER'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for amplifier that I've seen before include "It intensifies" , "Electronic equipment to increase signal strength" , "Loudspeaker driver" , "Signal booster" , "Device to boost sound levels" .)