In general, audio players do not consider the power supply as part of the overall plan of the audio system. In fact, the performance of the audio system is greatly affected by the quality of the power supply, especially in the modern environment full of various high-frequency communication equipment. The power supply in the middle of the home is increasingly polluted, which affects the sound performance of the audio system. In order to improve the purity of power supply, we can consider from many aspects.

Influence of power supply on sound

Add power filter. The biggest impact on the sound system is the electromagnetic interference of "contact conduction". High frequency noise generated by the motor devices, lighting tubes and even computers of the refrigerator and washing machine will relentlessly enter the power supply of the sound system and affect sensitive circuits. Although these high-frequency noises are far beyond the hearing range, the magic ears can feel the deterioration of sound quality caused by them. These high-frequency noises will indeed have a "modulation" effect on the audio signal of the sound. The most direct solution is to install a power filter.

In addition to the power filters in the street, there are also effective "power processors". Usually these products are expensive, but they have significant effects. They can effectively remove power impurities and maximize the sound quality of the equipment. Some well-designed power filters also have good performance in power capacity and dynamics.

Another thing related to the power supply of equipment is also easy to ignore. Strictly speaking, "grounding" is actually a part of the power supply, but "grounding" usually involves the default power system configuration of the building during construction. Generally speaking, buildings will not do special treatment for the "grounding" of audio equipment, so the general "grounding" situation is not ideal. Good "grounding" can effectively restrain the influence of electromagnetic interference on sound quality. If conditions permit, professionals can be invited to erect the building ground wire.

The other part is the "grounding" treatment of the audio equipment itself. Sometimes connecting a ground wire between the signal source and the enclosure of the amplifier can significantly help the sound quality. This is the function of zero potential integration between the equipment, and also helps to suppress the impact of electromagnetic waves on the sound quality performance. Of course, in the field of radio frequency interference, a seemingly inconspicuous ground wire needs to be carefully selected, and even different connection directions will have audible differences.

Another topic related to the above "landing" is "power phase". Generally, the power lines of audio equipment are all IEC standard specifications, followed by whether the indoor wall sockets and internal wiring are constructed according to the definition of IEC standards. Although the incorrect configuration does not affect the use of the electric device, it affects the sound quality of the audio system. In addition, for audio equipment using a two pin power plug, plugging in in different directions will actually have different sound performance (two power lines are divided into live line and zero line), and the difference is the same as that of power sockets that do not comply with the standard IEC device. Audio players can try to determine the change of sound by themselves.