PNG ICO ICNS MORE
Arrows
Glyph
DefaultIcon ver 0.11
media, volume
Black
256x256
Business & finance
Wireframe mono icons
Audio, sound, speaker
48x48
volume, Down, sound
PNG MORE
Music & multimedia
Iconic
volume, Mute
32x32
volume
Pixel
Sanscons
volume, high
64x64
low, volume
UI
Lynx Black
high, speaker, volume
16x16
medium, Audio, volume
volume, Audio, low
Audio, volume, muted
Computer & hardware
3D
Discovery
high, volume, Audio
volume, medium, Audio
Audio, muted, volume
volume, speaker
speaker, volume
Mixed
Iconza
volume, sound, speaker
Gnome icons
Audio, low, volume
24x24
medium, volume, Audio
Tango
volume, low, Audio
high, Audio, volume