Sanders sound systems preamplifier

Waiting for it's delivery.   Would this be better than my other 2 preamps???

onkyo p-308
B&K pro 10 mc

just want your thoughts on the sanders preamp.  Will it offer better clear sound than these other two preamps?

when I plug in the onkyo, I get instant static from tweeters.  I hope it's not a home cable issue


how do separate all my cables to minimize any hum, ac interference ???  Wrap all power cords together?
everything is bunched behind my tv.