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OTL Asylum OTL, Output Transformerless Amplifier User Group. |
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In Reply to: RE: How to set the bias with a DMM posted by Ralph on December 14, 2023 at 11:15:45:
Many thanks Ralph.
My MA-1 is the 14-tube version with manual bias and 5 6SN7 in the input section. I believe it's the Mk 2.3 Silver version except I omitted the Class A/AB switch.
To the credit of the amp, the DC offset and bias are very stable once set and do not seem to drift much over time either. I've always used a DMM for adjustment with the speakers disconnected. I had not adjusted the amps for over a year and when I decided to check and adjust them I had forgotten the need to set the DMM to DC amp scale for the bias measurement. Thus my question.
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Follow Ups
- RE: How to set the bias with a DMM - MLin 18:35:33 12/14/23 (0)
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