onboard

So I'm kinda (seriously) considering upgrading the onboard pre-amp on my Thumb BO 5 string. Its an original MEC 2-channel, no mid control. I was thinking about switching it out with a MEC 3-channel, like the ones found on NT Thumbs.8: Will this make a noticeable difference to my tone? I mean...

Hi, I seek for a little advice here as I am a bit confused, hope some of you will help me out. I opened up the cover on the back of my Thumb BO and a small black wire fell out. I tried to take a photo of it, both ends are loose, even though it looks like being attached to something, it is not...

Anyone knows how does Warwick (or any other company for that matter) choose a 2-way or 3-way onboard preamp for a specific bass model? Also what are the main differences between 2-way and 3-way preamps from your experience?