The utility model provides a power line, including audio input, audio output interface, USB interface, set between the audio input interface and the audio output interface of the switching control box, the USB interface is connected with a switching control box, the USB power supply interface, audio input interface, audio output interface and switching control the box is connected through a power line, the conversion regulation of the volume control knob is arranged on the box. Compared with the existing technology of a power line, has the advantages of reasonable design, simple structure, easy to use, to optimize the internal wiring wire and reduce the use of all kinds of sound amplifying loudspeaker power convenient, so it has good popularization and use value.
【技术实现步骤摘要】
【技术保护点】
一种功放线，其特征在于：包括音频输入接口、音频输出接口、USB接口、设置在音频输入接口和音频输出接口之间的转换调节盒，所述USB接口连接有转换调节盒，所述USB供电接口、音频输入接口、音频输出接口均与转换调节盒通过电源线连接，所述转换调节盒上设置有音量调节钮。
【技术特征摘要】
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