Just got it today. Saaweeeet

Anyway, on the back of the amp, there is a switch. It has three choices. A/Off/B. Is there a certain setting to put it on? I downloaded the manual, to no avail.

I live in the States if that has any affect on anything (grounding methods...idk)
Just try off for now.

BTW, no clips or pics?
Call me Wes.
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This switch is often helpful in reducing buzzes which originate in the AC power wiring outside the amplifier. We recommend leaving the
switch in its center OFF position unless position A or B definitely helps. In the center OFF position, your Boogie cannot be the source of
annoying "ground shocks" to the microphones etc."

Taken from the Manual of the Mark III

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