Fit. Double singles and doubles have great flexibility in the adjustment and control of guitar timbre, and can produce a variety of timbre effects, which are widely used in various music styles, including rock music. The timbre effect of guitar depends not only on the layout of pickup, but also on the quality of guitar, the power of speaker and the choice of audio equipment. When choosing guitar and audio equipment, you need to choose and match them according to your own needs and actual situation in order to achieve the best timbre effect.