Could it be for the ground nut?
Whats this for?
I bought a Mark Levinson 326S here and was looking over the owners manual box contents and I read "1/8-inch hex key". What the heck would an allen key come with a preamp for? While I don’t have the preamp in possession right now to look at screws. Would Madrigal/Harmon want you to remove the bottom of the unit for some reason, what reason? Or is it the feet that you can change?
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2020matters OP You might have dip switches inside to set your max gain for the volume control. Cheers George |
I've heard that some equipment makers will "float" the PC board on springs to isolate from external vibration. They are secured for transport with a screw that must be released once received. This is especially true for CD players but can see it on pre-amps, etc. Look for a hole on bottom of unit or read instruction book. |