Item Tag: ECC82, 5814A, 6189

the breath of life, ge usa 5814a are audiophile crown jewels, warmth musicality detail and airy bass depth, rare same code pairultra premium 12au7 ecc82 upgrade, adorns the rare special △ selection mark rumored to be 5-star special graded metallurgyone of the lowest noise audio grade tubes ever made, the sound reproduction and live-concert articulation is highly regarded authentic ge usa are revered for multiple genres including jazz and swing, instruments, percussion, and warm vinyl playbackthe intimate dynamics, exquisite holographics, smooth sweet imaging, and immersive depth add to the collectibility and lore this 1968 pair has nice silkscreens and includes the motorola 5814a boxes, ge ‘dots’ etch codes visible, and twice testedall tubes also undergo a complimentary refurbish and careful deoxit process ~ one of a kind value added quality control full mutual gm conductance test, pristine balance: 115/116~118/120 % gm (65 % min good) + useful life check pass (longetivity indicator) + leak short gas check via dynamic output gm test give several sessions or up to 100+ hours w/ your specific amps voltage to fully break-inships well packed worldwide w/ free economy postage! ~ authentic vintage hifidelity audio / mic / power / preamp tube curation by caliacoustics ~see our official site for reserve/request options + new arrivals + true-nos sealed box rarities + limited run special editions + ultra high-res headphones