Today I upgraded my 1989 usa fender jazz with a set of active emg pickups and a bartolini 2 band ntbt preamp. It sounds extremely nice now and I'd definately recommend the bart preamp/emg pickup combination. There's absolutely NO room left anywhere in the control cavity and changing the battery could be a pain, but it's worth it for the tone it puts out Very deep (but not boomy) lows and a nice smooth highend. The bartolini ntbt is the 3 knob volume/blend/stacked bass/treble setup and really gives the emg's depth and brilliance. Anyone else use the bart preamp/emg pickup setup?