The difference in sound quality between digital power amplifier and analog power amplifier

by:Gisen     2020-01-01
Difference 1: the equipment level is different, and the sound quality is also different. In the high-grade equipment, all the analog equipment is used, such as radio stations, TV stations, and advertising equipment, there are also record companies that use to record the opening tape recorders for CD master tapes. In short, at present, the sound quality of simulation is better than that of numbers. However, the number cannot be ignored. For example, the MP3 player we often use is the digital power amplifier. Difference 2: The digital power amplifier has high fidelity, and the sound quality is close to the original sound. The digital power amplifier has high fidelity, that is, the sound quality of the sound source is good, and the sound quality is good. The sound output by analog power amplifier is modified according to the needs of the listener, which is somewhat different from the sound quality of the original sound source. Therefore, it should be that the digital power amplifier has a better sense of presence and the sound quality is closer to the original sound. Difference 3: The sound quality of digital power amplifier is clear, the sound quality of analog power amplifier is comfortable, the sound of digital power amplifier is accurate and clear, and the sound of analog power amplifier sounds more comfortable. If it is a device such as a home theater, it is OK to use digital power amplifier. If you want to enjoy music quietly, it is recommended to use analog power amplifier; If you want to enjoy music clearly, it is recommended to use the digital power amplifier. Difference 4: Audio-Visual Positioning. For analog power amplifier, there is generally a phase difference between the output signal and the input signal, and the phase distortion is also different when the output power is different. The digital power amplifier uses digital signal amplification to make the phase of the output signal and the input signal completely consistent, and the phase shift is zero, so the audio-visual positioning is accurate. Difference 5: In terms of sound quality distortion, it simulates the distortion of Class B power amplifier over zero, which is the distortion at the positive and negative intersections of the output waveform caused by the nonlinear characteristics of the transistor at a small current. However, the digital power amplifier only works in the switching state and does not cause crossover distortion.
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