Ok, so here is the full story. I got a Warwick rockbass a couple weeks ago, and I love it, but there were some loose knobs and that output jack was loose as well, so I decided to tighten them all. After I tightened everything, I put the plate back on and hooked it up to my amp and my electronics are pretty much dead. I get the basic sound from my pickups, but they go straight to the amp; nothing is affected by the preamp, not even volume. I don't know if I shorted the preamp, or knocked something loose (nothing appears unconnected), but its not working. So I'm now looking at getting a new preamp as I didn't really like the one in it anyways - I have no mid control and I hate that. I've looked and I've narrowed it down to the Bartolini NTMB 4.6 (push/pull a/p volume, blend, push/pull mid, stacked treb/bass) and the Aguilar OBP-3TK/PP (not exactly sure of the knob setup on this). Is anybody currently using either of these? How well do they do their job? I'm thinking the Bart would be better, even though its generally more expensive. Anyways, any input at all would be appreciated.