"But her final words were drowned as a different voice echoed through the hall. It was high, cold, and clear: There was no telling where it came from; it seemed to issue from the walls themselves."
—Effects of the Amplifying Charm[src]

The Amplifying Charm[2] (Sonorus) is a charm that can be used to amplify the targeted sound,[1] be it a person's voice or a piece of equipment. The counter-charm to this spell is the Quietening Charm.[1]


This charm is particularly useful for amplifying one's voice, although using it on oneself for a long period of time will result in hoarseness thereafter.[1] When using the charm on an inanimate object one must simply point their wand at the device and either verbally or non-verbally incite the incantation.

Known uses

Caster(s) Date Notes
Albus Dumbledore 30 October, 1991

Dumbledore used this spell wandlessly in 1991 to calm down the students at Hogwarts School of Witchcraft and Wizardry during the Hallowe'en feast after Defence Against the Dark Arts Professor Quirinus Quirrell came screaming into the Great Hall, yelling about a troll in the Dungeons.[3]

1994–1995 school year Dumbledore used the spell several times during the Triwizard Tournament to get the students attention before and after each task.[4]
Ludovic Bagman 25 August, 1994 Bagman used the spell to set off the 422nd Quidditch World Cup between the Irish National Quidditch team and Bulgarian National Quidditch team.[1]
Ludovic Bagman 24 November, 1994 Used it to comment First Task of Triwizard Tournament.[5]
Ludovic Bagman 24 February, 1995 Used it to comment Second Task of Triwizard Tournament.[6]
Ludovic Bagman 24 June, 1995 Used it to comment Third Task of Triwizard Tournament.[7]
Molly Weasley 25 December, 1997 Molly Weasley used this spell to turn up the volume on the radio in 1997 to be able to listen to Celestina Warbeck, her favourite witch singer, after she was annoyed by Fleur Delacour talking loudly.[8]
Lord Voldemort 2 May, 1998 Voldemort used this spell in 1998 to announce his ultimatum to Hogwarts School of Witchcraft and Wizardry during the Battle of Hogwarts.[9]

Know practitioners


The incantation is a Latin word, meaning "loud".

Behind the scenes


Notes and references

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