Hi All, I need some assistance ID'ing this preamp. I have a 2001 Korean Lakland 55-01. I am preparing to sell it here, so I want to get my facts straight. I know that when I bought it, it had an upgraded Bartolini preamp. It has five control knobs, of the rubberized Bartolini type. IIRC, it was the preamp used in the USA Laklands at the time. The quirk is that there is no "switch" on the front, maybe because it's a 55-01 and not a 55-02? Either way I have a pic of the electronics cavity below, and I don't know what the function of the dual dip switch is. Can anyone ID the pre-amp (i.e. name it)? Can anyone tell me what the two switches do? Thanks everyone.