Voice amplified and levelled (5)
I believe the answer is:
rased
'levelled' is the definition.
('rase' can be a synonym of 'level')
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for rased that I've seen before include "brought low" , "totally devastated" , "Levelled to the ground" , "knocked down" , "Flattened to the ground" .)