from the myriad of searches I did, this is what I've gleamed thus far regarding preamps and noise. i'd like to consider getting a good outboard preamp but am still a bit confused. currently i have a Squier vintage modified p-bass with Duncan Designed pups, but plan to get a Fender next year. the Squier sounds really good with the treble on the bass and amp turned down low. from mid setting onward the annoying buzz becomes obnoxiously apparent. am I correct to conclude the following? so: a good outboard preamps (for ex: Sawdowsky DI) will cancel noise in any setting... but good preamps still cannot combat bad grounding in home outlets... if one has not yet adequately shielded the electronics, a good outboard preamp will eliminate the noise (noise defined as the buzz heard when the treble is turned up all the way)... a good outboard preamp can combat all noise in all settings if one desires to not replace the pups with, say, EMG active pups? pardon these amateurish observations. i've been an acoustic guitarist for many years, and have recently switched to playing bass so there's a new learning curve. thanks in advance. Jack.