Ключевые слова: amplifier, audio, button, climate, control, controller, design, dial, digital, editable, electronic, element, equipment, flat, graphic, graphics, green, home, icon, illustration, intensity, interface, knob, level, line, linear, logo, music, outline, panel, perfect, pictogram, pixel, power, room, scale, sign, simple, single, sound, stereo, stroke, switch, symbol, technology, temperature, tuner, volume, web,