Happy to report, that I have scored my ultimate “Holy Grail” tube! 
The Hamburg made ECC82 Long Plate with Foil D Getter from 56’. The acid etched codes are K62 D6H, with K62 signifying the second revision with long plates, the D signifying the Hamburg/Germany factory, and 6 signifying the year 1956. I have read over and over, about how this is one of the best 12au7/ECC82 ever made, and I can confirm that. This tube has it all, and this is the kind of sound I have been hunting for since I started tube rolling. I have been searching every day all day for this tube, going on more than a year now, and I finally scored a pair. I got the pair for only $105, so that in it’s self was incredible, seeing as these tubes easily go for $200 a piece. This tube is so rare, very few have even heard or seen one in person, and I feel very lucky to have found a pair, that is perfectly matched and are quiet as can be. The sound is warm, but detailed, and has a huge soundstage. The delicacy of the notes and how they sustain is breathtaking and I am hearing things in the vocals and instruments as if I am there with the musicians. I don’t have enough adjectives to describe how insane this tube sounds, but I can’t recommend it enough. If you have ever heard a 7316 Long Plate Foil D Getter, this tube sounds similar, but every thing is just a tad better and lifelike sounding, which says a lot.
Hamburg ECC82 Long Plate Foil D Getter 56’
