Compare quality of TV control (8)

I believe the answer is:

contrast

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'compare' is the definition.
(I've seen this before)

I cannot understand how the remainder of the clue works.

(Other definitions for contrast that I've seen before include "Compare to show differences" , "Distinction" , "State of being strikingly different" , "Unlikeness shown by comparison" , "Something completely different" .)

I've seen this clue in The Globe and Mail.

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