1 x Rare NOS GEC CV4085 Vintage Gt Britain ~ Special Grade EF86 ~ Z729 6267 6CF8 Preamp / Audio / U47 U67 Neumann Mic Tube ~ Legendary Layered Tone Great Presence Smooth Lush Wide Stage

Soundelux U99, VOX AC30 Heritage Bottlehead Tube, Repro 2009 Brauner VM1 mic, Eastern Electic M520 amp Lawson L47MP, 65 Amps Monterey, Dr. Z Route 66, Dr. Z Z-28, Eastern Electric M520, Matchless C-30/SC30/DC-30Manley baby valve mic, Microtek UM92.1 mic, Neumann U47 mic Neumann U67 mic, Quad II Vox AC10 and more apps!

vintage gec gt britain are rare collectible crown jewels, sought after by audiophiles for their incredible sound reproduction, especially in mics

the low noise cv4085 is considered the best variant of ef86 ever made, sometimes ranked higher sonically than telefunken mullard or even z729 ef806s

old british gec tubes have a long tenured history, w/ oems including marshall, and known for their kt 66 beam excellence

the highest quality tube-era metallurgy, transparency, and warm fidelity!

transform and elevate your playback experience w/ more presence, dimensional holographics, and textured harmonics

1 x rare old stock cv4085 military grade gt britain by gec, premium top shelf ef86 6267! (also said to be a higher grade of the rare selected z729!)

full mutual conductance test over 90% + useful life test pass (longetivity indicator) + leak / short / gas check

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

always give up to 100+ session hours w/ your amps voltage to break-in/cure

ships fast well packed worldwide! priority/express by request