hi there! i need some help i ordered bart 8s and hr22ap preamp for a few days ago, the problem is that im doubting about the active/passive switch, is the a/p switch on the volum knob or seperate switch? Im ordered from guitarelectronics.com, and my warmoth p-bass with 3 pot holes sidejack is not under process at warmoth yet(im just waiting for the payment instructions for wire transfer). at guitarelectronics.com i understood that the switch was seperate. from guitarelectronics.com from bartolini.net please help me! im confused!