So to settle this once and for all I emailed Mick, to see if he would weigh in on this. His typically succinct reply:
"33's are fine - good tubes actually."
So I would say that everyone should feel free to use the GZ33 if they so desire, since the designer of the preamp says it's OK to do so.
"33's are fine - good tubes actually."
So I would say that everyone should feel free to use the GZ33 if they so desire, since the designer of the preamp says it's OK to do so.