@teajay
You may be right that tube rolling is the solution. But still I wonder how you would describe what impact on the sound you heard when you changed the stock tube (Genalex Gold Lion I think it is) to the NOS CCA 1962 Siemens tube (about $350, yes?)?
You may be right that tube rolling is the solution. But still I wonder how you would describe what impact on the sound you heard when you changed the stock tube (Genalex Gold Lion I think it is) to the NOS CCA 1962 Siemens tube (about $350, yes?)?

