Be careful when buying Mullards. You want ORIGINAL TUBES from the '60's or '70's. There are people (no names!) selling mil-spec Mullards, in white boxes that were manufactured in the '80's. I am familiar with the 12AU7 variety, marked as a CV 4004 KQDD/K with no Mullard name on the tube (manufactured in 1985). THESE ARE PURE CRAP....noisy and microphonic as hell. If there is also a 6922/6DJ8 version, stay away from it like someone with SARS!!!! This garbage is NOT THE REAL DEAL, NEAL!!!
