PNG ICO ICNS MORE
Computer & hardware
Pixel
WooCons #1
speaker
DarkSlateGray
32x32
Music & multimedia
3D
Milanioom
128x128
UI
Boolean
Mute, speaker, sound
16x16
speaker, volume, Control
Shopping & e-commerce
Vista
speaker, sound, Audio
400x400
Fugue Icons
speaker, volume, none
Business & finance
Smooth
Primo
Mixed
Handdrawn
Web Design Creatives
speaker, Box
Phuzion
Desktop apps
Minicons
48x48
Photography & graphic design
Dark Glass
sound, speaker, music
Futurosoft
Network & communications
Oxygen
blog, megaphone, Promotion
KDE Crystal Diamond
sound, speaker, Mute