Want the earlier breakup of the JJ EL844's and a very smooth and rich tone with less grit for your Classic 30, Classic 50 or Delta Blues? This is our Low Output Gold Pin Option Retube Kit and it contains a matched quad of JJ EL844's (to drop the output a couple decibels) along with two standard Gold Pin ECC83S's for V1-V2 and a graded high current Gold Pin ECC83S for V3.