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| use 2 japan pnp transistor and japan cap to build |
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| 3 pcs 3pin condenser mic use in this equipment |
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| the component install in the plastic box加入標題 |
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| the box connect with a mobile phone standard |
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| the 3 mic pick up |
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| martin guitar with the condenser mic |
2013年12月22日 星期日
diy phantom power 48v 3 pcs 3 pin condenser mic for guitar
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