Thank you, Paul. This is useful to know. I assume that level of hiss with the stock tubes is what would be considered normal or acceptable, given the design (yes?). This would give a baseline for comparing other tubes.
My BHK pre arrives today! 
Thank you, Paul. This is useful to know. I assume that level of hiss with the stock tubes is what would be considered normal or acceptable, given the design (yes?). This would give a baseline for comparing other tubes.
My BHK pre arrives today!