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Question on biasing MA-1 with DMM

I have a pair of Atma Sphere MA-1 which I prefer to adjust DC offset and bias with a DMM.

With the DMM probes connected to the MA-1's speaker posts, I know I need to set the DMM to DC voltage scale to measure and adjust the DC offset.

Can someone help explain why the DMM need to be set to DC Ampere scale to measure and adjust the bias?

Thanks!


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Topic - Question on biasing MA-1 with DMM - MLin 20:23:07 12/07/23 (17)

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