So I bought an used Rockbass Streamer. Fretless fiver, of recent production (W on the headstock). I was very satisfied with the playability but the sound just wasn't there. Really muddy and completely dead in the high end. I couldn't get an usable tone out of it, it was so unexpressive. Initially I blamed the two humbuckers, but then I took a closer look at the electronics. The tone pot was wired like this: p'up input on the center lug, output on the left lug. A cap was between the center lug and ground. I busted out my soldering iron and modified it to something more conventional (input and output on the center lug, cap between left lug and ground)... And the bass suddenly came alive. Crisp, sharp harmonics and it really sings on the upper register. A whole different bass. So I ask you, why would they wire it that way? I don't believe for a second it was a more "desirable" tone, the guy who sold me the bass also agreed with me after i told him this. I also noticed the bass has very low output... And it seems it's using 25K pots. For passive pickups. Shouldn't they be at least 250K or even 500K? By the way, increasing pot resistance gives more output alright, but how does it affect the tone? I'd put 250K's on it but I'm afraid they would muddy things up again. If, on the contrary, higher resistance means more highs, I might as well put 500k's on it.