Quote Originally Posted by t_ross33
What do all the toggle switches do?
First the knobs. The top one is volume, the middle one is a treble cut, and the bottom is a bass cut knob. The separate bass and treble controls are a Leo Fender innovation that he brought to G&L, and it is used on the L-2000.

The top toggle is a 3-way pickup selector. The middle toggle is a 2-way series or parallel select, I think it puts the coils in the humbucker in series versus parallel wiring. This bass has an active preamp that runs off of a 9-volt battery. The bottom toggle is a 3-way: up is preamp with treble boost, middle is preamp on, down is preamp off.

With all these control options this bass can create a lot of different tones, I'm still learning about them.

I'm not new to G&L guitars, I have one which is a telecaster shaped body but with 3 pickups. It also has a mini toggle that turns on a bridge and neck pickup combination, or even a bridge, mid, and neck pickup combination. These combinations are not possible on a Strat with regular wiring.