Item Tag: nec nippon

The rare audiophile 12ad7 was introduced in 1955, as a low-noise/low-hum 12ax7 on steroids! predating the legendary 7025. full mutual conductance gm test + leak / short / gas / sound checks + life test (a key longetivity indicator).

The rare audiophile 12ad7 was introduced in 1955, as a low-noise/low-hum 12ax7 on steroids! predating the legendary 7025. nice silkscreens w/ old rare boxes included, carefully curated rising-value collectibles.