Symbol 6044 from IEC 60417 - Title/Meaning: Caution, avoid listening at high volume levels for long periods 
Function/description: [To indicate that listening at high volume levels for long periods should be avoided in order to prevent possible hearing damage.In case of application as a warning sign the rules according to ISO 3864 shall be adhered to.]
Own work using: iso.org/obp/graphics/grs/7fc668d4-6738-4a4f-97cd-b49c40448ca9 200.png
Vectorization:  Mrmw