CN107182006A
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A kind of audio amplifier micro-acoustic controls circuit
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CN107360492A
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A kind of audio amplifier sound equalization controls amplification control circuit
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CN106272870A
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A kind of portable sound box of improvement
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CN105337580A
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Audio power amplification control circuit
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CN105357611A
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Audio pre-amplification circuit
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CN105407435A
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Audio adjusting circuit
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CN105338449A
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Sound effect processing circuit
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CN105338451A
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Control circuit of loudspeaker box
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CN105376676A
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A loudspeaker box echo processing circuit
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CN105376678A
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An audio adjusting circuit
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CN105472506A
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Microphone circuit audio control circuit
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CN105375884A
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Loudspeaker box power amplification circuit
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CN105516854A
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Signal processing circuit for loudspeaker box
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CN103888858A
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Loudspeaker box with LED lamps
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CN103905940A
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Outdoor loudspeaker box
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CN103905939A
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Portable loudspeaker box
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CN103888859A
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Improved multimedia loudspeaker box
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CN103929686A
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Loudspeaker box
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CN102638738A
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Microphone bracket
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