1x NOS ChromePlate GoldPin Siemens ECC82 12AU7 by Ei Yugo (Grail Telefunken Tooling) ~ Detailed Rich Luminous Tone

revered by audiophiles, vintage elektronska industrija nis tubes were the last to be based on telefunken tooling and equipment

these very rare chrome nickel plate editions convey a great balance between high level detail + sweet rich lush musicality

these collectible gold pin 17mm smooth plate 12au7 ecc82 capture the purest spatial tonality and lowest distortional noise

these limited runs are highly sought after for their warmth, realistic sound reproduction, and upper register vocal showcase

legendary playback regard! w/ a great harmonic resolve, live-concert holographic transparency, and subtle treble roundoff

ei gold special editions are the highest quality metallurgy of the tube era, and contribute to the sonic lore of ei yugoslavia

1 x authentic siemens ecc82 12au7 w/ chrome nickel plates by ei yugo, thick flashing and smooth plates

per piece / only 2 in stock w/ same batch code and same gamma Ω etch code, w/ siemens box included

twice tested, and undergoes a complimentary refurbish + deoxit process! one of a kind quality control

full mutual conductance gm test, pristine nos, 2 available: tube1: 90/90 ~ tube2: 110/110 % gm (65 % min good)

our high power output test applies up to 250v, more than many other testers, simulating real circuits

+ life test pass (important longetivity indicator) + our impeccable leak / short / gas check

give up to 150+ hours w/ your specific amps voltage to fully break-in / cure, before any re-test

ships fast well packed worldwide