[RCM78]

Did you buy the amp new? Does it have the stock tubes?
Mine came with Sovtek 6L6WXT power tubes and a mix of Sovtek and ElectroHarmonix pre-amp tubes.

Now I have JJ 6L6GC power tubes and all EH pre-amp tubes.

The JJ's sound much better then the Sovtek's. Much smoother. Before the switch I allways noticed a sizzle on top of the tone when playing single notes or solo's. Also, chords have a little more definition.

I didnt notice a difference replacing the Pre-amp tubes.

FYI, The first three pre-amp tubes shape your sound and are the gain stages. The fourth runs the effect's loop and the fifth is a phase inverter.

 

[RCM78]

The JJ's are not the same as the Sovteks. They are larger, the constuction inside them looks very different and most of all they sound different. Better in my opinion.


There are some tubes out there that are rebadged. But the JJ's are not.

 

[RCM78]

Sovtek and Electro Harmonix are manufactured by "New Sensor Corporation".

JJ Tesla, Svetlana, and Ei are not. These companies manufacture there own tubes...