the e34l is a much better sounding tube than the el34. and as for tube rolling, it is really doubtful that you will find a better sounding combination than what is there already. you will only make it sound different and imho, not better. the jan 5814 is a classic.
the e34ls must be a matched quad.
how old is the amp?
b
the e34ls must be a matched quad.
how old is the amp?
b