Description

a classic big sound tube, nec nippon are revered for balance, smooth neutral sound stage, great bass, and true tonal authority known for their incredible vacuum tube quality and uncolored sound reproduction, these rare 6ca7 el34 are highly collectible w/ a long and tenured history going back to 1899, nec japan was even utilized during 1960s olympics worldwide broadcast this vintage weld plate production features the most precious metallurgy of the tube era, long life, and rich tonal warmth 2 x old stock carefully curated direct japan import nec nippon 6ca7 el34, plain or branded boxes included full mutual gm conductance test: several pairs available: par1: 100/99 ~ pair2: 99/98 ~ pair3: 98/95 ~ pair4: 91/91 % gm (65 % min good) our high power gm output test applies up to 250v, more than many other analog testers + important life test pass! (a key longetivity indicator) + leak / short / gas check + a complimentary refurbish and deoxit process! one of a kind value-added quality control give several sessions or up to 100+ hours w/ your amps voltage to break-in / cure ships well packed worldwide w/ free economy postage! ~ authentic vintage hifidelity audio / power / preamp / mic tube curation by caliacoustics ~ see our official web site for new arrivals + reserve/request options + true-nos sealed box rarities + limited run special editions + hard to find pinched waist collectibles