how set the bias and hum in Antique Sound lab


Hello, I need set the bias and hum in a AQ1009 (845 MONOBLOCKS) , the manual is missing.

can help me somebody?

Thanks.
albertolima
Go to Antique Sound Labs forum in harmonicdiscord.com. Leave a message for Joseph Lau. He owns ASL and has been very good answering my questions on that forum.
THANKS.