Horn/speaker is a kind of sound amplification equipment, which can be divided into home audio, car audio, stage audio, speech audio, etc. according to its use; it can be divided into moving coil, capacitor, magnetic levitation, electronic tube, etc. according to its working principle. the quality of speakers/speakers is directly related to the sound quality. good brands include bose, jbl, b&w, etc. common connection methods include wired, wireless, and bluetooth. in addition to the audio field,

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