PNG ICO ICNS MORE
Freecns
Down, volume
Silver
16x16
PNG ICO MORE
Retina
volume up, Up, volume
64x64
Faenza
Audio, volume, medium
48x48
volume, Audio, off
volume, Audio, Blocked
low, Audio, Panel
volume, Audio, high
G5 Drives
Removable, volume
128x128
Mixed
Glyph
Retina Display Icons
volume, Down
Up, volume