Hi Mica. Any word on my mysterious extra switches? Very curious. Have searched the Alembic site thoroughly and still not seen anything like this on any other bass. Keen to know if it is a factory installation or not. Also is it possible to find out the original string gauges that this bass was set up for? Not really expecting that sort of info to be in the original build sheet, but just curious. Is there a 'standard' Alembic string gauge? Thanks again. This site has been a revelation! So much information and way too many beautiful and desirable instruments!