1x NOS Tesla EF806S (Telefunken Tooling) /Digital Tested /Premium EF86 6267 (CV4085 / Z729) ~ Neumann U67/U47 Microtech Gefell UM92 Tube Mics ~ 3D Detail Smooth Mids Incredible Vocals Great Bass Depth Musical

update: our catalog is now available w/ digital results! for unparalleled accuracy, including gain noise waveform checks

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 Gefel UM92.1 mic, Neumann U47 mic Neumann U67 mic, Quad II Vox AC10 + more

in many sound systems, tesla are the top sonic echelon by some margin, and often ranked second only to telefunken or mullard

this is due to the tooling tesla utilized, w/ lore telling us they are incredibly close, especially on these best-of ef806s models

ef806s, a sought after premium ef86 6267 upgrade (z729 cv4085), rugged w/ long life, especially important for low noise apps

these old production types are audiophile crown jewels, and truly collectible, w/ incredible presence and dimensionality

often described as a musical full tonal body, w/ a clear detailed presentation, and a sweet persona w/ great extended presence

this added weight + warmth, important for giving you necessary insight into recordings, reveals more than many other brands

incredible vocal playback, great mid-band depth, and a sought after bass curve which is deep and clean w/out being punchy

compared to mullard, tesla are described as highly musical, great resolution, bite + kick, w/ a sooner stage break-up

6267, EF86, Z729, 8D8, 6F40, M8195, CV2901, CV4085, CV4086, CV8068, CV8081, CV10098, 6CF8, 6Ж32П, 6267, 6BK8, 6F22 +

full mutual conductance gm test + leak / short / gas check + life check (key longetivity indicator)

our high power output test measures the entire linear curve (eg-ip), and applies up to 250v, more than many other testers

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

give several sessions or 150+ hours w/ your amps voltage to fully break-in / cure

ships well packed