Ключевые слова: adjustable, analog, audio, background, button, change, circuit, close, closeup, component, control, development, device, dial, electric, electrical, electronic, electronics, element, engineering, entertainment, equipment, hardware, industry, interface, knob, level, metallic, music, object, old, part, pot, potentiometer, potentiometers, power, precision, radio, range, retro, rotary, setting, signal, sound, stereo, technology, tuning, variable, variation, volume,