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In Reply to: RE: Atma-sphere MA-1 Bias and DC offset adjustment (older model) posted by email@example.com on October 01, 2016 at 10:26:35
-As a result the Bias is automatic. You only adjust the DC Offset.
Depress the Test button on the rear panel, adjust the DC Offset control for a zero ('0') reading on the meter. Do not do this when signal is applied as the meter can be easily damaged.
Check it again after 1 hour of operation.
That's it- pretty easy.
From what you can see, could you tell me the history of this amplifier? Has it been updated? Thanks. Ken
Its a MkIII; beyond that I can't speculate without seeing what's inside.
Thank you for the instructions on setting dc offset. The amps are working well. I have another picture inside the amp for you to look at. Hopefully you can give me more info on the amps. ken
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