2A3 finally finished

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icefireman 發表於 2009-2-21 00:07:58 | 顯示全部樓層

Gratz Cat Sir!

I have a question. Is it necessary to use relay (on/off) on pre-amp. If it is, which type I should use (what voltage) on M7 pre-amp? Many thx! And where I can buy it?

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