Hi I have a Martin 00-21 and itīs end plug is smaller than the preamp/plug provided with the Lyric. Since I want to use an adapter to avoid drilling in guitar. (by the way I think itīis time LR Baggs provided a solution that fits Martin guitars, after all they are no minor guitar builder) I need to know how to resolder the wiring. Is it wired as a mono or a stereo plug? / Frans Mossberg, Sweden