Answer: amplifies

AnswerCrossword Clue
amplifiesEnlarge upon or add detail to (a story or statement)
amplifiesIncrease the volume of (sound), esp. using an amplifier
amplifiesIncrease the amplitude of (an electrical signal or other oscillation)
amplifiesAMPLIFY, to enlarge (to make larger, also ENLARGEN)
amplifiesMake multiple copies of (a gene or DNA sequence)
amplifiesCause to become more marked or intense