I was wondering if turning down the bias to closer to 600ma would be too problematic re: stability issues/sound?
I have read some posts on other sites where indiv turn the bias down by 10% or so and significantly extend the life of their tubes?
Any truth? Bad idea in this application? I can not versed enough in this design to know how hard it pushed the 6550 tube.
I run my tubes at 650ma - 680ma but wonder if turning down to 600ma woudl have any benifits or costs?
Any help?
Thanx everyone!