Leisure Activities, Piano, Musical Instrument, Amplifier, Hardware, Keyboard, Computer, Computer Hardware, Computer Keyboard, Stereo, system, grunge, music, stereo, amp, audio, graphic, volume, equalizer, black, dust, studio, amplifier, equipment, play, button, entertainment, sound, player, control, design, technology, metal, digital, power, urban, electronic, receiver, level, close up, closeup, selective focus, color, colorful, colour, background, bar, interface, media, modern, multimedia, object, panel, settings, slider, style, symbol, sound system, sound mixer, sound studio
Graphic equalizer controls on an audio system - Close Up Selective Focus