Great Tremor: Heavy Pressure is a Teigu in the form of a microphone. It was owned by Cosmina and is now owned by the Revolutionary Army.
Abilities
Heavy Pressure is a microphone-type Teigu that can amplify the user's voice and turn it into ultrasonic waves capable of pulverizing the enemy by shattering their bones.
It seemed to have different output levels; with full power output presumably being its trump card.
.png "Akame Ga Kill! - Heavy Pressure (close-up).png (41 KB)")
A close-up of Heavy Pressure