Hello, I was sifting through signthreads and someone said something about adding a buffer board to a passive bass... essentially something that boosts signal so there's no degradation through the cable for. I've done a search and come up with nothing... was he talking about a preamp and just used dif temrinology or is there something I can put in my passive basses that preserves my signal without altering on long cable runs? Thanks P.S. also could someone direct to a good guide about pots and capacitors... I'm wanting to upgrade the pots on some of my basses but don't know what to look at or anything.