Anyone NOT using a preamp. Going directly from your bass to a PA. I can get all the tonal varieties I need outta my LG-3005's and it sounds fine run directtly into my PLX 1602. BUT..... I don't have quite enough level. With my Navigator.. all is fine, without it, I just can't quite get the volume. Anyone have an inexpensive way to boost the signal, so I can sell the Preamp, and carry less stuff?