Exaggerate the effect of a stereo TV broadcast (9)

I believe the answer is:

overstate

I'm a little stuck... Click here to teach me more about this clue!

'exaggerate the effect' is the definition.
'overstate' can be an answer for 'exaggerate' ('overstate' can be a synonym of 'exaggerate'). I am not sure about the 'the effect' bit.

'a stereo tv broadcast' is the wordplay.
'broadcast' is an anagram indicator.
'a'+'stereo'+'tv'='astereotv'
'astereotv' anagrammed gives 'OVERSTATE'.

'of' is the link.

Can you help me to learn more?

(Other definitions for overstate that I've seen before include "Exaggerate, go beyond bounds of truth" , "lay it on thick" , "Exaggerate, make too much of" .)

I've seen this clue in The Telegraph.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.