If your sound box needs to connect to the computer, MP3 player, radio, etc., you may directly buy an extension line of audio, it can be a multi audio converter. The quantity of audio sources is not limited. If you can't buy the extension line of audio, you can also buy a parallel plug and an audio line, as below:

The elementary diagram:

How to use?

Connect this parallel plug with a double audio line, equalizing to make an extension line of audio. Everyday when you convert the audio sources, as the elementary diagram shows above, just pull out the left plug, then connect to another audio source, it will be converted. The profit is, when changing the audio source, you needn't to directly pull out the audio socket on the sound box, not only convenient, but also preventing that the cold solder happens on the circuit board, because of insert and pulling out frequently and continually.

The connection photo of this parallel plug is below:

You may buy a parallel plug and an audio line for a sound box. If you have several sounders, you may buy several parallel plugs and audio lines. It is cheaper than buying the "Audio converter", "Audio/Video converter" in the marketplace. This way is good as long as you are diligent in moving hands.

Note: You should connect correctly, if you pull out the right side of the parallel plug "Fixup forever", and if both of the 2 sides are audio source, It may destroy some audio equipments.

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