Thanks for your responses.
My tech said that it was clear that there was a failed tube.It took 2 resistors with it.BTW,turns out that the Svetlana 6550Cs that were sold to me are actually made by Sovtek.
Anyway,Vintage Electron has offered to replace all 8 tubes,and I will probably content myself with replacing the matched quartet that includes the failed tube.
This is my first experience with current production high power output tubes.I have been quite spoiled in the past with amps that take the likes of KT66,EL37,EL84.But,my CLss need the power.
Raanan
My tech said that it was clear that there was a failed tube.It took 2 resistors with it.BTW,turns out that the Svetlana 6550Cs that were sold to me are actually made by Sovtek.
Anyway,Vintage Electron has offered to replace all 8 tubes,and I will probably content myself with replacing the matched quartet that includes the failed tube.
This is my first experience with current production high power output tubes.I have been quite spoiled in the past with amps that take the likes of KT66,EL37,EL84.But,my CLss need the power.
Raanan