Audiophilepure

http://goo.gl/NiJTai

“rue to the PrimaLuna party line, the Adaptive Auto Bias will let you run different tube types in the various output tube sockets, but having lived with PrimaLuna amplifiers for a long time”

http://goo.gl/qg9R2S<a

"Curious, I opened up the DiaLogue Premium and made a few cursory measurements, at which time I discovered that the position of the selector switch makes a difference of less than 2V for the same tube: –54.6V when set for KT120s vs –56.4V when set for EL34s."