PNG ICO ICNS MORE
Mixed
3D
Iconza
sound, speaker, volume
Black
32x32
PNG ICO ICNS SVG MORE
Glyph
Flat UI Icons Free
music, sound, speaker
512x512
WPZOOM Developer Icon Set
volume
Retina Display Icons
volume, Down
Silver
64x64
Up, volume
PNG MORE
Pixel
IconSweets 2
Key, volume, speaker
40x40
speaker, volume, sound
Smooth
Humility
volume, Control
48x48
volume, Min, stock
24x24
volume, 0, stock
med, stock, volume
stock, volume, Mute
Simplicio
128x128
Mute, volume
volume, Up
The Spherical icon set
sound, Mute, volume
MidnightBlue
announcement, sound, speaker
volume, sound, speaker
Vista Inspirate
volume, player
DarkSlateGray
22x22