只要焊上 3 條線
3.5mm的 紅 > S+
3.5mm的 銅 > S-
最後一條就是剪出來的"左"耳筒綠線 > S-
![[轉載]改 K750i 耳機為 3.5mm](http://attach.mobile01.com/attach/200506/mobile01-3cd12269cb565b7849b1a72223ea247a.jpg)
![[轉載]改 K750i 耳機為 3.5mm](http://attach.mobile01.com/attach/200506/mobile01-fb1ca8151c29a7693ddc64d63a5d29cb.jpg)
以下是各條線特徵:
Copper : Earphone ground (-ve)
Blue : Earphone right side (+ve)
Green : Earphone left side (+ve)
Black : Microphone ground (-ve)
White : Microphone (+ve)
![[轉載]改 K750i 耳機為 3.5mm](http://attach.mobile01.com/attach/200506/mobile01-5048292ae9607dbee4ea4a33641792f3.jpg)
From: http://www.howardforums.com/showthread.php?t=654198&page=1&pp=15
