NOS Rare DualDgetter BlackWeldPlate NEC Nippon 6L6GB Power Tube ~ 5881 7581 KT66 ~ Neutral Tone Smooth Imaging Holographic Sound

introduced in the 1950s, the revered high power 6l6gb features a smaller envelope than previous designs + oem for many amps

one of the earliest production types w/ dual dgetter high resolution! premium metallurgy, and holographic sound reproduction

the legendary black plate carbide coating radiates heat better, reduces plate temps faster, and enhances tonal characteristics

nec nippon are revered for their neutral balanced smooth sound stage, great bass, and true authority, a classic big sound tube

the uncolored sound reproduction highlights musicality and a variety of genres, w/ more precision and less tonal mascara

the pure sound quality, long life time, and premium quality, all contribute to the lore and collectibility of rare old nec nippon

w/ a long and tenured history going back to 1899, nec japan was even utilized during 1960s olympics worldwide broadcast

take your listening/production experience to a higher level of dimensional engaging detail and immersive harmonic imaging

transform playback articulation and singer vocals and acoustics w/ more realism and rich bass resolve and texture reveal

these old production types capture live-concert definition, highlighting percussion, and instruments w/ ethereal warmth

old stock rare nec nippon welded black plate 6l6gb w/ dual dgetters, nice silkscreen front and back, old box included

+ complimentary refurbish and deoxit process ~ one of a kind value-added quality control

full conductance mutual gm test, pristine nos, 107 % gm  (65 % min good)

+ important life test pass! (a key longetivity indicator) + leak / short / gas check

give several sessions or up to 150+ hours w/ your amps voltage to break-in / fully cure

ships well packed worldwide