NOS BlackPlate TungSol 6L6GB DGetter PowerTube ~ Grail Audio (KT66 5881 7581A) ~ Neutral Tone Detailed Open Musicality High Resolution Sound Reproduction

tungsol usa are audiophile crown jewels, revered for their attention to detail, craftsmanship, sonic quality, and build design

established in 1907, tungsol is a highly tenured manufacturer, truly collectible, and sought after for good reason! 

transparent realistic sound reproduction, detailed dynamics, an incredible open tonality, and smooth involving musicality

their longetivity and performance are one of a kind, w/ even neutral tonal balance, and warm spacious frequency extension

this early type adorns a track-tip square dgetter, for increased resolution, adding fidelity, definition, and sonic resolving air

the legendary black plate carbide coating radiates heat better, reduces plate temps faster, and enhances tonal characteristics

introduced in the 1950's, this high power 6l6gb is an improved design over the g/ga series 6l6, w/ pristine silkscreen and old box included

full mutual gm conductance test, pristine nos: 108 % gm (65 % min good)

our high power gm output test applies up to 250v w/ filtered dc, more than many other analog testers

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

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

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

ships well packed worldwide