I've been talking around about mastering my tone, which is lacking right now. I'm playing a (Mexican) Fender Jazz bass through an SVT 3 Pro and a B610T Sonic cab. My cab sounds awesome with another head/bass so I'm considering moving to a rack set up (Pre-amp power-amp) and wondering if I could get feedback on tone boosts. I was thinking a Sans-amp preamp but I have no idea what kind of power amp or anything. Oh yeah, considering a new bass too, I just need a better tone all around. Thoughts?