Valvo ECC82 12AU7 Long Plates Square Getter Matched Pair - Copenhagen 1955 K6B

Product Summary Is this reality? Or is this a fairy tale? All the bells and whistles for a vintage tube one can ever dream of packed in ONE "super tube" package: the old-style Valvo printing, the elusively rare 17mm long plates, the unmistakable beautiful square getter, also 45-deg angled, the 1950s' two-digit date code between the pins, and from where?  Look again. It's NOT the "delta" symbol you typically see on Philips tubes made in Heerlen, Holland, but the isosceles triangle (∆) that stands for the Philips Copenhagen factory. When was the last time you saw one of these?  Sound Qualities The most distinctive sound feature of the Philips ECC82 is the transparent, natural and expansive midrange presentation, with a slight touch of warmth that illuminates your music. Every piece of music you play through these tubes sounds like from a vinyl record, whether your sound source is phono or not. This "template sound" remains the same across all Philips factory,