6H30's can't be swapped in & out for 6DJ8 and equiv. And vice versa. Different voltages and pinouts.
The driver tube in an amplifier, IMHO, would not benefit from a "DR" upgrade. I really don't think you'd hear a difference, but I've never tried?
Theo, you're welcome for the advice to upgrade to the "DR" tube :-) Told you so...
The driver tube in an amplifier, IMHO, would not benefit from a "DR" upgrade. I really don't think you'd hear a difference, but I've never tried?
Theo, you're welcome for the advice to upgrade to the "DR" tube :-) Told you so...