[chgolatin2]

I need to manually bias my tube amp even though it came with auto bias option I want make sure that my bias is set correctly manually.  I read the manual and it states that the setting should be between .36 to .44 or (360 to 440) the amp is running EL34/KK-77 what is a happy medium setting for optimal performance?    Do I set it at .36, .44 or .40?  now I have a silly question, can I purchase a cheapo radio shack multimeter to do the job or do I need something that is better, if so, what type?  Digital, etc? 

Thanks!

[mjosef]

Depends on the design. My Jolida is biased at 38-39. I use the JJ EL34L's. I have heard of some using 50ma bias for their EL34 amp(different design/make).

[rollo]

I need to manually bias my tube amp even though it came with auto bias option I want make sure that my bias is set correctly manually.  I read the manual and it states that the setting should be between .36 to .44 or (360 to 440) the amp is running EL34/KK-77 what is a happy medium setting for optimal performance?    Do I set it at .36, .44 or .40?  now I have a silly question, can I purchase a cheapo radio shack multimeter to do the job or do I need something that is better, if so, what type?  Digital, etc? 

Thanks!

  The Rat Shack multimeter is just fine for this purpose IMO. Try all three settings and listen. You may decide you prefer one over the other. I can get different sound when adjusting the bias with the 211 based SET. Give it a go. Happy listening.


 rollo